feat: hook-pipeline progress — tests passing

rust/Cargo.lock

@@ -25,7 +25,6 @@ dependencies = [
  "runtime",
  "serde",
  "serde_json",
- "telemetry",
  "tokio",
 ]
 
@@ -1097,7 +1096,6 @@ dependencies = [
  "serde",
  "serde_json",
  "sha2",
- "telemetry",
  "tokio",
  "walkdir",
 ]
@@ -1430,14 +1428,6 @@ dependencies = [
  "yaml-rust",
 ]
 
-[[package]]
-name = "telemetry"
-version = "0.1.0"
-dependencies = [
- "serde",
- "serde_json",
-]
-
 [[package]]
 name = "thiserror"
 version = "2.0.18"

rust/crates/api/Cargo.toml

@@ -10,7 +10,6 @@ reqwest = { version = "0.12", default-features = false, features = ["json", "rus
 runtime = { path = "../runtime" }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
-telemetry = { path = "../telemetry" }
 tokio = { version = "1", features = ["io-util", "macros", "net", "rt-multi-thread", "time"] }
 
 [lints]

rust/crates/api/src/client.rs

@@ -2,19 +2,17 @@ use std::collections::VecDeque;
 use std::time::{Duration, SystemTime, UNIX_EPOCH};
 
 use runtime::{
-    format_usd, load_oauth_credentials, pricing_for_model, save_oauth_credentials, OAuthConfig,
-    OAuthRefreshRequest, OAuthTokenExchangeRequest,
+    load_oauth_credentials, save_oauth_credentials, OAuthConfig, OAuthRefreshRequest,
+    OAuthTokenExchangeRequest,
 };
 use serde::Deserialize;
-use serde_json::{Map, Value};
-use telemetry::{AnalyticsEvent, AnthropicRequestProfile, ClientIdentity, SessionTracer};
 
 use crate::error::ApiError;
 use crate::sse::SseParser;
 use crate::types::{MessageRequest, MessageResponse, StreamEvent};
 
 const DEFAULT_BASE_URL: &str = "https://api.anthropic.com";
-const MESSAGES_PATH: &str = "/v1/messages";
+const ANTHROPIC_VERSION: &str = "2023-06-01";
 const REQUEST_ID_HEADER: &str = "request-id";
 const ALT_REQUEST_ID_HEADER: &str = "x-request-id";
 const DEFAULT_INITIAL_BACKOFF: Duration = Duration::from_millis(200);
@@ -110,8 +108,6 @@ pub struct AnthropicClient {
     max_retries: u32,
     initial_backoff: Duration,
     max_backoff: Duration,
-    request_profile: AnthropicRequestProfile,
-    session_tracer: Option<SessionTracer>,
 }
 
 impl AnthropicClient {
@@ -124,8 +120,6 @@ impl AnthropicClient {
             max_retries: DEFAULT_MAX_RETRIES,
             initial_backoff: DEFAULT_INITIAL_BACKOFF,
             max_backoff: DEFAULT_MAX_BACKOFF,
-            request_profile: AnthropicRequestProfile::default(),
-            session_tracer: None,
         }
     }
 
@@ -138,8 +132,6 @@ impl AnthropicClient {
             max_retries: DEFAULT_MAX_RETRIES,
             initial_backoff: DEFAULT_INITIAL_BACKOFF,
             max_backoff: DEFAULT_MAX_BACKOFF,
-            request_profile: AnthropicRequestProfile::default(),
-            session_tracer: None,
         }
     }
 
@@ -184,39 +176,6 @@ impl AnthropicClient {
         self
     }
 
-    #[must_use]
-    pub fn with_request_profile(mut self, request_profile: AnthropicRequestProfile) -> Self {
-        self.request_profile = request_profile;
-        self
-    }
-
-    #[must_use]
-    pub fn with_client_identity(mut self, client_identity: ClientIdentity) -> Self {
-        self.request_profile.client_identity = client_identity;
-        self
-    }
-
-    #[must_use]
-    pub fn with_beta(mut self, beta: impl Into<String>) -> Self {
-        let beta = beta.into();
-        if !self.request_profile.betas.contains(&beta) {
-            self.request_profile.betas.push(beta);
-        }
-        self
-    }
-
-    #[must_use]
-    pub fn with_extra_body_param(mut self, key: impl Into<String>, value: Value) -> Self {
-        self.request_profile.extra_body.insert(key.into(), value);
-        self
-    }
-
-    #[must_use]
-    pub fn with_session_tracer(mut self, session_tracer: SessionTracer) -> Self {
-        self.session_tracer = Some(session_tracer);
-        self
-    }
-
     #[must_use]
     pub fn with_retry_policy(
         mut self,
@@ -252,7 +211,6 @@ impl AnthropicClient {
         if response.request_id.is_none() {
             response.request_id = request_id;
         }
-        self.record_response_usage(&response);
         Ok(response)
     }
 
@@ -321,30 +279,18 @@ impl AnthropicClient {
 
         loop {
             attempts += 1;
-            self.record_request_started(request, attempts);
             match self.send_raw_request(request).await {
                 Ok(response) => match expect_success(response).await {
-                    Ok(response) => {
-                        self.record_request_succeeded(request, attempts, &response);
-                        return Ok(response);
-                    }
+                    Ok(response) => return Ok(response),
                     Err(error) if error.is_retryable() && attempts <= self.max_retries + 1 => {
-                        self.record_request_failed(request, attempts, &error);
                         last_error = Some(error);
                     }
-                    Err(error) => {
-                        self.record_request_failed(request, attempts, &error);
-                        return Err(error);
-                    }
+                    Err(error) => return Err(error),
                 },
                 Err(error) if error.is_retryable() && attempts <= self.max_retries + 1 => {
-                    self.record_request_failed(request, attempts, &error);
                     last_error = Some(error);
                 }
-                Err(error) => {
-                    self.record_request_failed(request, attempts, &error);
-                    return Err(error);
-                }
+                Err(error) => return Err(error),
             }
 
             if attempts > self.max_retries {
@@ -364,213 +310,18 @@ impl AnthropicClient {
         &self,
         request: &MessageRequest,
     ) -> Result<reqwest::Response, ApiError> {
-        let request_url = format!("{}{}", self.base_url.trim_end_matches('/'), MESSAGES_PATH);
-        let mut request_builder = self
+        let request_url = format!("{}/v1/messages", self.base_url.trim_end_matches('/'));
+        let request_builder = self
             .http
             .post(&request_url)
+            .header("anthropic-version", ANTHROPIC_VERSION)
             .header("content-type", "application/json");
-        for (name, value) in self.request_profile.header_pairs() {
-            request_builder = request_builder.header(name, value);
-        }
         let mut request_builder = self.auth.apply(request_builder);
 
-        let request_body = self.request_profile.render_json_body(request)?;
-        request_builder = request_builder.json(&request_body);
+        request_builder = request_builder.json(request);
         request_builder.send().await.map_err(ApiError::from)
     }
 
-    fn record_request_started(&self, request: &MessageRequest, attempt: u32) {
-        if let Some(tracer) = &self.session_tracer {
-            tracer.record_http_request_started(
-                attempt,
-                "POST",
-                MESSAGES_PATH,
-                self.request_attributes(request),
-            );
-        }
-    }
-
-    fn record_request_succeeded(
-        &self,
-        request: &MessageRequest,
-        attempt: u32,
-        response: &reqwest::Response,
-    ) {
-        if let Some(tracer) = &self.session_tracer {
-            tracer.record_http_request_succeeded(
-                attempt,
-                "POST",
-                MESSAGES_PATH,
-                response.status().as_u16(),
-                request_id_from_headers(response.headers()),
-                self.request_attributes(request),
-            );
-        }
-    }
-
-    fn record_request_failed(&self, request: &MessageRequest, attempt: u32, error: &ApiError) {
-        if let Some(tracer) = &self.session_tracer {
-            tracer.record_http_request_failed(
-                attempt,
-                "POST",
-                MESSAGES_PATH,
-                error.to_string(),
-                error.is_retryable(),
-                self.error_attributes(request, error),
-            );
-        }
-    }
-
-    fn record_response_usage(&self, response: &MessageResponse) {
-        let Some(tracer) = &self.session_tracer else {
-            return;
-        };
-
-        let cost = response.usage.estimated_cost_usd(&response.model);
-        let pricing_source = if pricing_for_model(&response.model).is_some() {
-            "model-specific"
-        } else {
-            "default-sonnet"
-        };
-
-        let mut properties = Map::new();
-        properties.insert("model".to_string(), Value::String(response.model.clone()));
-        properties.insert(
-            "pricing_source".to_string(),
-            Value::String(pricing_source.to_string()),
-        );
-        properties.insert(
-            "input_tokens".to_string(),
-            Value::from(response.usage.input_tokens),
-        );
-        properties.insert(
-            "output_tokens".to_string(),
-            Value::from(response.usage.output_tokens),
-        );
-        properties.insert(
-            "cache_creation_input_tokens".to_string(),
-            Value::from(response.usage.cache_creation_input_tokens),
-        );
-        properties.insert(
-            "cache_read_input_tokens".to_string(),
-            Value::from(response.usage.cache_read_input_tokens),
-        );
-        properties.insert(
-            "total_tokens".to_string(),
-            Value::from(response.usage.total_tokens()),
-        );
-        properties.insert(
-            "estimated_cost_usd".to_string(),
-            Value::String(format_usd(cost.total_cost_usd())),
-        );
-        properties.insert(
-            "estimated_input_cost_usd".to_string(),
-            Value::String(format_usd(cost.input_cost_usd)),
-        );
-        properties.insert(
-            "estimated_output_cost_usd".to_string(),
-            Value::String(format_usd(cost.output_cost_usd)),
-        );
-        properties.insert(
-            "estimated_cache_creation_cost_usd".to_string(),
-            Value::String(format_usd(cost.cache_creation_cost_usd)),
-        );
-        properties.insert(
-            "estimated_cache_read_cost_usd".to_string(),
-            Value::String(format_usd(cost.cache_read_cost_usd)),
-        );
-        if let Some(request_id) = &response.request_id {
-            properties.insert("request_id".to_string(), Value::String(request_id.clone()));
-        }
-
-        tracer.record_analytics(AnalyticsEvent {
-            namespace: "api".to_string(),
-            action: "message_usage".to_string(),
-            properties,
-        });
-    }
-
-    fn request_attributes(&self, request: &MessageRequest) -> Map<String, Value> {
-        let mut attributes = Map::new();
-        attributes.insert("model".to_string(), Value::String(request.model.clone()));
-        attributes.insert("stream".to_string(), Value::Bool(request.stream));
-        attributes.insert("max_tokens".to_string(), Value::from(request.max_tokens));
-        attributes.insert(
-            "message_count".to_string(),
-            Value::from(u64::try_from(request.messages.len()).unwrap_or(u64::MAX)),
-        );
-        attributes.insert(
-            "tool_count".to_string(),
-            Value::from(
-                u64::try_from(request.tools.as_ref().map_or(0, Vec::len)).unwrap_or(u64::MAX),
-            ),
-        );
-        attributes.insert(
-            "beta_count".to_string(),
-            Value::from(u64::try_from(self.request_profile.betas.len()).unwrap_or(u64::MAX)),
-        );
-        if !self.request_profile.betas.is_empty() {
-            attributes.insert(
-                "betas".to_string(),
-                Value::Array(
-                    self.request_profile
-                        .betas
-                        .iter()
-                        .cloned()
-                        .map(Value::String)
-                        .collect(),
-                ),
-            );
-        }
-        if !self.request_profile.extra_body.is_empty() {
-            attributes.insert(
-                "extra_body_keys".to_string(),
-                Value::Array(
-                    self.request_profile
-                        .extra_body
-                        .keys()
-                        .cloned()
-                        .map(Value::String)
-                        .collect(),
-                ),
-            );
-        }
-        attributes
-    }
-
-    fn error_attributes(&self, request: &MessageRequest, error: &ApiError) -> Map<String, Value> {
-        let mut attributes = self.request_attributes(request);
-        match error {
-            ApiError::Api {
-                status,
-                error_type,
-                message,
-                ..
-            } => {
-                attributes.insert("status".to_string(), Value::from(status.as_u16()));
-                if let Some(error_type) = error_type {
-                    attributes.insert("error_type".to_string(), Value::String(error_type.clone()));
-                }
-                if let Some(message) = message {
-                    attributes.insert("api_message".to_string(), Value::String(message.clone()));
-                }
-            }
-            ApiError::Http(_) => {
-                attributes.insert("error_type".to_string(), Value::String("http".to_string()));
-            }
-            ApiError::Json(_) => {
-                attributes.insert("error_type".to_string(), Value::String("json".to_string()));
-            }
-            _ => {
-                attributes.insert(
-                    "error_type".to_string(),
-                    Value::String("client".to_string()),
-                );
-            }
-        }
-        attributes
-    }
-
     fn backoff_for_attempt(&self, attempt: u32) -> Result<Duration, ApiError> {
         let Some(multiplier) = 1_u32.checked_shl(attempt.saturating_sub(1)) else {
             return Err(ApiError::BackoffOverflow {

rust/crates/api/src/lib.rs

@@ -15,9 +15,3 @@ pub use types::{
     MessageResponse, MessageStartEvent, MessageStopEvent, OutputContentBlock, StreamEvent,
     ToolChoice, ToolDefinition, ToolResultContentBlock, Usage,
 };
-
-pub use telemetry::{
-    AnalyticsEvent, AnthropicRequestProfile, ClientIdentity, JsonlTelemetrySink,
-    MemoryTelemetrySink, SessionTraceRecord, SessionTracer, TelemetryEvent, TelemetrySink,
-    DEFAULT_ANTHROPIC_VERSION,
-};

rust/crates/api/src/types.rs

@@ -1,4 +1,3 @@
-use runtime::{pricing_for_model, TokenUsage, UsageCostEstimate};
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
 
@@ -151,29 +150,7 @@ pub struct Usage {
 impl Usage {
     #[must_use]
     pub const fn total_tokens(&self) -> u32 {
-        self.input_tokens
-            + self.output_tokens
-            + self.cache_creation_input_tokens
-            + self.cache_read_input_tokens
-    }
-
-    #[must_use]
-    pub const fn token_usage(&self) -> TokenUsage {
-        TokenUsage {
-            input_tokens: self.input_tokens,
-            output_tokens: self.output_tokens,
-            cache_creation_input_tokens: self.cache_creation_input_tokens,
-            cache_read_input_tokens: self.cache_read_input_tokens,
-        }
-    }
-
-    #[must_use]
-    pub fn estimated_cost_usd(&self, model: &str) -> UsageCostEstimate {
-        let usage = self.token_usage();
-        pricing_for_model(model).map_or_else(
-            || usage.estimate_cost_usd(),
-            |pricing| usage.estimate_cost_usd_with_pricing(pricing),
-        )
+        self.input_tokens + self.output_tokens
     }
 }
 
@@ -233,47 +210,3 @@ pub enum StreamEvent {
     ContentBlockStop(ContentBlockStopEvent),
     MessageStop(MessageStopEvent),
 }
-
-#[cfg(test)]
-mod tests {
-    use runtime::format_usd;
-
-    use super::{MessageResponse, Usage};
-
-    #[test]
-    fn usage_total_tokens_includes_cache_tokens() {
-        let usage = Usage {
-            input_tokens: 10,
-            cache_creation_input_tokens: 2,
-            cache_read_input_tokens: 3,
-            output_tokens: 4,
-        };
-
-        assert_eq!(usage.total_tokens(), 19);
-        assert_eq!(usage.token_usage().total_tokens(), 19);
-    }
-
-    #[test]
-    fn message_response_estimates_cost_from_model_usage() {
-        let response = MessageResponse {
-            id: "msg_cost".to_string(),
-            kind: "message".to_string(),
-            role: "assistant".to_string(),
-            content: Vec::new(),
-            model: "claude-sonnet-4-20250514".to_string(),
-            stop_reason: Some("end_turn".to_string()),
-            stop_sequence: None,
-            usage: Usage {
-                input_tokens: 1_000_000,
-                cache_creation_input_tokens: 100_000,
-                cache_read_input_tokens: 200_000,
-                output_tokens: 500_000,
-            },
-            request_id: None,
-        };
-
-        let cost = response.usage.estimated_cost_usd(&response.model);
-        assert_eq!(format_usd(cost.total_cost_usd()), "$54.6750");
-        assert_eq!(response.total_tokens(), 1_800_000);
-    }
-}

rust/crates/api/tests/client_integration.rs

@@ -8,7 +8,6 @@ use api::{
     StreamEvent, ToolChoice, ToolDefinition,
 };
 use serde_json::json;
-use telemetry::{ClientIdentity, MemoryTelemetrySink, SessionTracer, TelemetryEvent};
 use tokio::io::{AsyncReadExt, AsyncWriteExt};
 use tokio::net::TcpListener;
 use tokio::sync::Mutex;
@@ -65,18 +64,6 @@ async fn send_message_posts_json_and_parses_response() {
         request.headers.get("authorization").map(String::as_str),
         Some("Bearer proxy-token")
     );
-    assert_eq!(
-        request.headers.get("anthropic-version").map(String::as_str),
-        Some("2023-06-01")
-    );
-    assert_eq!(
-        request.headers.get("user-agent").map(String::as_str),
-        Some("claude-code/0.1.0")
-    );
-    assert_eq!(
-        request.headers.get("anthropic-beta").map(String::as_str),
-        Some("claude-code-20250219,prompt-caching-scope-2026-01-05")
-    );
     let body: serde_json::Value =
         serde_json::from_str(&request.body).expect("request body should be json");
     assert_eq!(
@@ -86,115 +73,6 @@ async fn send_message_posts_json_and_parses_response() {
     assert!(body.get("stream").is_none());
     assert_eq!(body["tools"][0]["name"], json!("get_weather"));
     assert_eq!(body["tool_choice"]["type"], json!("auto"));
-    assert_eq!(
-        body["betas"],
-        json!(["claude-code-20250219", "prompt-caching-scope-2026-01-05"])
-    );
-}
-
-#[tokio::test]
-async fn send_message_applies_request_profile_and_records_telemetry() {
-    let state = Arc::new(Mutex::new(Vec::<CapturedRequest>::new()));
-    let server = spawn_server(
-        state.clone(),
-        vec![http_response_with_headers(
-            "200 OK",
-            "application/json",
-            concat!(
-                "{",
-                "\"id\":\"msg_profile\",",
-                "\"type\":\"message\",",
-                "\"role\":\"assistant\",",
-                "\"content\":[{\"type\":\"text\",\"text\":\"ok\"}],",
-                "\"model\":\"claude-3-7-sonnet-latest\",",
-                "\"stop_reason\":\"end_turn\",",
-                "\"stop_sequence\":null,",
-                "\"usage\":{\"input_tokens\":1,\"cache_creation_input_tokens\":2,\"cache_read_input_tokens\":3,\"output_tokens\":1}",
-                "}"
-            ),
-            &[("request-id", "req_profile_123")],
-        )],
-    )
-    .await;
-    let sink = Arc::new(MemoryTelemetrySink::default());
-
-    let client = AnthropicClient::new("test-key")
-        .with_base_url(server.base_url())
-        .with_client_identity(ClientIdentity::new("claude-code", "9.9.9").with_runtime("rust-cli"))
-        .with_beta("tools-2026-04-01")
-        .with_extra_body_param("metadata", json!({"source": "clawd-code"}))
-        .with_session_tracer(SessionTracer::new("session-telemetry", sink.clone()));
-
-    let response = client
-        .send_message(&sample_request(false))
-        .await
-        .expect("request should succeed");
-
-    assert_eq!(response.request_id.as_deref(), Some("req_profile_123"));
-
-    let captured = state.lock().await;
-    let request = captured.first().expect("server should capture request");
-    assert_eq!(
-        request.headers.get("anthropic-beta").map(String::as_str),
-        Some("claude-code-20250219,prompt-caching-scope-2026-01-05,tools-2026-04-01")
-    );
-    assert_eq!(
-        request.headers.get("user-agent").map(String::as_str),
-        Some("claude-code/9.9.9")
-    );
-    let body: serde_json::Value =
-        serde_json::from_str(&request.body).expect("request body should be json");
-    assert_eq!(body["metadata"]["source"], json!("clawd-code"));
-    assert_eq!(
-        body["betas"],
-        json!([
-            "claude-code-20250219",
-            "prompt-caching-scope-2026-01-05",
-            "tools-2026-04-01"
-        ])
-    );
-
-    let events = sink.events();
-    assert_eq!(events.len(), 6);
-    assert!(matches!(
-        &events[0],
-        TelemetryEvent::HttpRequestStarted {
-            session_id,
-            attempt: 1,
-            method,
-            path,
-            ..
-        } if session_id == "session-telemetry" && method == "POST" && path == "/v1/messages"
-    ));
-    assert!(matches!(
-        &events[1],
-        TelemetryEvent::SessionTrace(trace) if trace.name == "http_request_started"
-    ));
-    assert!(matches!(
-        &events[2],
-        TelemetryEvent::HttpRequestSucceeded {
-            request_id,
-            status: 200,
-            ..
-        } if request_id.as_deref() == Some("req_profile_123")
-    ));
-    assert!(matches!(
-        &events[3],
-        TelemetryEvent::SessionTrace(trace) if trace.name == "http_request_succeeded"
-    ));
-    assert!(matches!(
-        &events[4],
-        TelemetryEvent::Analytics(event)
-            if event.namespace == "api"
-                && event.action == "message_usage"
-                && event.properties.get("request_id") == Some(&json!("req_profile_123"))
-                && event.properties.get("total_tokens") == Some(&json!(7))
-                && event.properties.get("estimated_cost_usd") == Some(&json!("$0.0001"))
-    ));
-    assert!(matches!(
-        &events[5],
-        TelemetryEvent::SessionTrace(trace) if trace.name == "analytics"
-    ));
 }
 
 #[tokio::test]

rust/crates/runtime/Cargo.toml

@@ -11,7 +11,6 @@ glob = "0.3"
 regex = "1"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
-telemetry = { path = "../telemetry" }
 tokio = { version = "1", features = ["io-util", "macros", "process", "rt", "rt-multi-thread", "time"] }
 walkdir = "2"
 

rust/crates/runtime/src/config.rs

@@ -42,6 +42,7 @@ pub struct RuntimeFeatureConfig {
     oauth: Option<OAuthConfig>,
     model: Option<String>,
     permission_mode: Option<ResolvedPermissionMode>,
+    permission_rules: RuntimePermissionRuleConfig,
     sandbox: SandboxConfig,
 }
 
@@ -49,6 +50,14 @@ pub struct RuntimeFeatureConfig {
 pub struct RuntimeHookConfig {
     pre_tool_use: Vec<String>,
     post_tool_use: Vec<String>,
+    post_tool_use_failure: Vec<String>,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Default)]
+pub struct RuntimePermissionRuleConfig {
+    allow: Vec<String>,
+    deny: Vec<String>,
+    ask: Vec<String>,
 }
 
 #[derive(Debug, Clone, PartialEq, Eq, Default)]
@@ -235,6 +244,7 @@ impl ConfigLoader {
             oauth: parse_optional_oauth_config(&merged_value, "merged settings.oauth")?,
             model: parse_optional_model(&merged_value),
             permission_mode: parse_optional_permission_mode(&merged_value)?,
+            permission_rules: parse_optional_permission_rules(&merged_value)?,
             sandbox: parse_optional_sandbox_config(&merged_value)?,
         };
 
@@ -306,6 +316,11 @@ impl RuntimeConfig {
         self.feature_config.permission_mode
     }
 
+    #[must_use]
+    pub fn permission_rules(&self) -> &RuntimePermissionRuleConfig {
+        &self.feature_config.permission_rules
+    }
+
     #[must_use]
     pub fn sandbox(&self) -> &SandboxConfig {
         &self.feature_config.sandbox
@@ -344,6 +359,11 @@ impl RuntimeFeatureConfig {
         self.permission_mode
     }
 
+    #[must_use]
+    pub fn permission_rules(&self) -> &RuntimePermissionRuleConfig {
+        &self.permission_rules
+    }
+
     #[must_use]
     pub fn sandbox(&self) -> &SandboxConfig {
         &self.sandbox
@@ -352,10 +372,15 @@ impl RuntimeFeatureConfig {
 
 impl RuntimeHookConfig {
     #[must_use]
-    pub fn new(pre_tool_use: Vec<String>, post_tool_use: Vec<String>) -> Self {
+    pub fn new(
+        pre_tool_use: Vec<String>,
+        post_tool_use: Vec<String>,
+        post_tool_use_failure: Vec<String>,
+    ) -> Self {
         Self {
             pre_tool_use,
             post_tool_use,
+            post_tool_use_failure,
         }
     }
 
@@ -368,6 +393,33 @@ impl RuntimeHookConfig {
     pub fn post_tool_use(&self) -> &[String] {
         &self.post_tool_use
     }
+
+    #[must_use]
+    pub fn post_tool_use_failure(&self) -> &[String] {
+        &self.post_tool_use_failure
+    }
+}
+
+impl RuntimePermissionRuleConfig {
+    #[must_use]
+    pub fn new(allow: Vec<String>, deny: Vec<String>, ask: Vec<String>) -> Self {
+        Self { allow, deny, ask }
+    }
+
+    #[must_use]
+    pub fn allow(&self) -> &[String] {
+        &self.allow
+    }
+
+    #[must_use]
+    pub fn deny(&self) -> &[String] {
+        &self.deny
+    }
+
+    #[must_use]
+    pub fn ask(&self) -> &[String] {
+        &self.ask
+    }
 }
 
 impl McpConfigCollection {
@@ -481,6 +533,32 @@ fn parse_optional_hooks_config(root: &JsonValue) -> Result<RuntimeHookConfig, Co
             .unwrap_or_default(),
         post_tool_use: optional_string_array(hooks, "PostToolUse", "merged settings.hooks")?
             .unwrap_or_default(),
+        post_tool_use_failure: optional_string_array(
+            hooks,
+            "PostToolUseFailure",
+            "merged settings.hooks",
+        )?
+        .unwrap_or_default(),
+    })
+}
+
+fn parse_optional_permission_rules(
+    root: &JsonValue,
+) -> Result<RuntimePermissionRuleConfig, ConfigError> {
+    let Some(object) = root.as_object() else {
+        return Ok(RuntimePermissionRuleConfig::default());
+    };
+    let Some(permissions) = object.get("permissions").and_then(JsonValue::as_object) else {
+        return Ok(RuntimePermissionRuleConfig::default());
+    };
+
+    Ok(RuntimePermissionRuleConfig {
+        allow: optional_string_array(permissions, "allow", "merged settings.permissions")?
+            .unwrap_or_default(),
+        deny: optional_string_array(permissions, "deny", "merged settings.permissions")?
+            .unwrap_or_default(),
+        ask: optional_string_array(permissions, "ask", "merged settings.permissions")?
+            .unwrap_or_default(),
     })
 }
 
@@ -843,7 +921,7 @@ mod tests {
         .expect("write user compat config");
         fs::write(
             home.join("settings.json"),
-            r#"{"model":"sonnet","env":{"A2":"1"},"hooks":{"PreToolUse":["base"]},"permissions":{"defaultMode":"plan"}}"#,
+            r#"{"model":"sonnet","env":{"A2":"1"},"hooks":{"PreToolUse":["base"]},"permissions":{"defaultMode":"plan","allow":["Read"],"deny":["Bash(rm -rf)"]}}"#,
         )
         .expect("write user settings");
         fs::write(
@@ -853,7 +931,7 @@ mod tests {
         .expect("write project compat config");
         fs::write(
             cwd.join(".claude").join("settings.json"),
-            r#"{"env":{"C":"3"},"hooks":{"PostToolUse":["project"]},"mcpServers":{"project":{"command":"uvx","args":["project"]}}}"#,
+            r#"{"env":{"C":"3"},"hooks":{"PostToolUse":["project"],"PostToolUseFailure":["project-failure"]},"permissions":{"ask":["Edit"]},"mcpServers":{"project":{"command":"uvx","args":["project"]}}}"#,
         )
         .expect("write project settings");
         fs::write(
@@ -898,6 +976,16 @@ mod tests {
             .contains_key("PostToolUse"));
         assert_eq!(loaded.hooks().pre_tool_use(), &["base".to_string()]);
         assert_eq!(loaded.hooks().post_tool_use(), &["project".to_string()]);
+        assert_eq!(
+            loaded.hooks().post_tool_use_failure(),
+            &["project-failure".to_string()]
+        );
+        assert_eq!(loaded.permission_rules().allow(), &["Read".to_string()]);
+        assert_eq!(
+            loaded.permission_rules().deny(),
+            &["Bash(rm -rf)".to_string()]
+        );
+        assert_eq!(loaded.permission_rules().ask(), &["Edit".to_string()]);
         assert!(loaded.mcp().get("home").is_some());
         assert!(loaded.mcp().get("project").is_some());
 

rust/crates/runtime/src/conversation.rs

@@ -1,15 +1,14 @@
 use std::collections::BTreeMap;
 use std::fmt::{Display, Formatter};
 
-use serde_json::{Map, Value};
-use telemetry::SessionTracer;
-
 use crate::compact::{
     compact_session, estimate_session_tokens, CompactionConfig, CompactionResult,
 };
 use crate::config::RuntimeFeatureConfig;
-use crate::hooks::{HookRunResult, HookRunner};
-use crate::permissions::{PermissionOutcome, PermissionPolicy, PermissionPrompter};
+use crate::hooks::{HookAbortSignal, HookProgressReporter, HookRunResult, HookRunner};
+use crate::permissions::{
+    PermissionContext, PermissionOutcome, PermissionPolicy, PermissionPrompter,
+};
 use crate::session::{ContentBlock, ConversationMessage, Session};
 use crate::usage::{TokenUsage, UsageTracker};
 
@@ -100,7 +99,8 @@ pub struct ConversationRuntime<C, T> {
     max_iterations: usize,
     usage_tracker: UsageTracker,
     hook_runner: HookRunner,
-    session_tracer: Option<SessionTracer>,
+    hook_abort_signal: HookAbortSignal,
+    hook_progress_reporter: Option<Box<dyn HookProgressReporter>>,
 }
 
 impl<C, T> ConversationRuntime<C, T>
@@ -122,18 +122,19 @@ where
             tool_executor,
             permission_policy,
             system_prompt,
-            &RuntimeFeatureConfig::default(),
+            RuntimeFeatureConfig::default(),
         )
     }
 
     #[must_use]
+    #[allow(clippy::needless_pass_by_value)]
     pub fn new_with_features(
         session: Session,
         api_client: C,
         tool_executor: T,
         permission_policy: PermissionPolicy,
         system_prompt: Vec<String>,
-        feature_config: &RuntimeFeatureConfig,
+        feature_config: RuntimeFeatureConfig,
     ) -> Self {
         let usage_tracker = UsageTracker::from_session(&session);
         Self {
@@ -144,8 +145,9 @@ where
             system_prompt,
             max_iterations: usize::MAX,
             usage_tracker,
-            hook_runner: HookRunner::from_feature_config(feature_config),
-            session_tracer: None,
+            hook_runner: HookRunner::from_feature_config(&feature_config),
+            hook_abort_signal: HookAbortSignal::default(),
+            hook_progress_reporter: None,
         }
     }
 
@@ -156,22 +158,100 @@ where
     }
 
     #[must_use]
-    pub fn with_session_tracer(mut self, session_tracer: SessionTracer) -> Self {
-        self.session_tracer = Some(session_tracer);
+    pub fn with_hook_abort_signal(mut self, hook_abort_signal: HookAbortSignal) -> Self {
+        self.hook_abort_signal = hook_abort_signal;
         self
     }
 
+    #[must_use]
+    pub fn with_hook_progress_reporter(
+        mut self,
+        hook_progress_reporter: Box<dyn HookProgressReporter>,
+    ) -> Self {
+        self.hook_progress_reporter = Some(hook_progress_reporter);
+        self
+    }
+
+    fn run_pre_tool_use_hook(&mut self, tool_name: &str, input: &str) -> HookRunResult {
+        if let Some(reporter) = self.hook_progress_reporter.as_mut() {
+            self.hook_runner.run_pre_tool_use_with_context(
+                tool_name,
+                input,
+                Some(&self.hook_abort_signal),
+                Some(reporter.as_mut()),
+            )
+        } else {
+            self.hook_runner.run_pre_tool_use_with_context(
+                tool_name,
+                input,
+                Some(&self.hook_abort_signal),
+                None,
+            )
+        }
+    }
+
+    fn run_post_tool_use_hook(
+        &mut self,
+        tool_name: &str,
+        input: &str,
+        output: &str,
+        is_error: bool,
+    ) -> HookRunResult {
+        if let Some(reporter) = self.hook_progress_reporter.as_mut() {
+            self.hook_runner.run_post_tool_use_with_context(
+                tool_name,
+                input,
+                output,
+                is_error,
+                Some(&self.hook_abort_signal),
+                Some(reporter.as_mut()),
+            )
+        } else {
+            self.hook_runner.run_post_tool_use_with_context(
+                tool_name,
+                input,
+                output,
+                is_error,
+                Some(&self.hook_abort_signal),
+                None,
+            )
+        }
+    }
+
+    fn run_post_tool_use_failure_hook(
+        &mut self,
+        tool_name: &str,
+        input: &str,
+        output: &str,
+    ) -> HookRunResult {
+        if let Some(reporter) = self.hook_progress_reporter.as_mut() {
+            self.hook_runner.run_post_tool_use_failure_with_context(
+                tool_name,
+                input,
+                output,
+                Some(&self.hook_abort_signal),
+                Some(reporter.as_mut()),
+            )
+        } else {
+            self.hook_runner.run_post_tool_use_failure_with_context(
+                tool_name,
+                input,
+                output,
+                Some(&self.hook_abort_signal),
+                None,
+            )
+        }
+    }
+
     #[allow(clippy::too_many_lines)]
     pub fn run_turn(
         &mut self,
         user_input: impl Into<String>,
         mut prompter: Option<&mut dyn PermissionPrompter>,
     ) -> Result<TurnSummary, RuntimeError> {
-        let user_input = user_input.into();
-        self.record_turn_started(&user_input);
         self.session
             .messages
-            .push(ConversationMessage::user_text(user_input));
+            .push(ConversationMessage::user_text(user_input.into()));
 
         let mut assistant_messages = Vec::new();
         let mut tool_results = Vec::new();
@@ -180,31 +260,17 @@ where
         loop {
             iterations += 1;
             if iterations > self.max_iterations {
-                let error = RuntimeError::new(
+                return Err(RuntimeError::new(
                     "conversation loop exceeded the maximum number of iterations",
-                );
-                self.record_turn_failed(iterations, &error);
-                return Err(error);
+                ));
             }
 
             let request = ApiRequest {
                 system_prompt: self.system_prompt.clone(),
                 messages: self.session.messages.clone(),
             };
-            let events = match self.api_client.stream(request) {
-                Ok(events) => events,
-                Err(error) => {
-                    self.record_turn_failed(iterations, &error);
-                    return Err(error);
-                }
-            };
-            let (assistant_message, usage) = match build_assistant_message(events) {
-                Ok(result) => result,
-                Err(error) => {
-                    self.record_turn_failed(iterations, &error);
-                    return Err(error);
-                }
-            };
+            let events = self.api_client.stream(request)?;
+            let (assistant_message, usage) = build_assistant_message(events)?;
             if let Some(usage) = usage {
                 self.usage_tracker.record(usage);
             }
@@ -218,11 +284,6 @@ where
                     _ => None,
                 })
                 .collect::<Vec<_>>();
-            self.record_assistant_iteration(
-                iterations,
-                &assistant_message,
-                pending_tool_uses.len(),
-            );
 
             self.session.messages.push(assistant_message.clone());
             assistant_messages.push(assistant_message);
@@ -232,71 +293,97 @@ where
             }
 
             for (tool_use_id, tool_name, input) in pending_tool_uses {
-                self.record_tool_started(iterations, &tool_name);
-                let permission_outcome = if let Some(prompt) = prompter.as_mut() {
-                    self.permission_policy
-                        .authorize(&tool_name, &input, Some(*prompt))
+                let pre_hook_result = self.run_pre_tool_use_hook(&tool_name, &input);
+                let effective_input = pre_hook_result
+                    .updated_input()
+                    .map_or_else(|| input.clone(), ToOwned::to_owned);
+                let permission_context = PermissionContext::new(
+                    pre_hook_result.permission_override(),
+                    pre_hook_result.permission_reason().map(ToOwned::to_owned),
+                );
+
+                let permission_outcome = if pre_hook_result.is_cancelled() {
+                    PermissionOutcome::Deny {
+                        reason: format_hook_message(
+                            &pre_hook_result,
+                            &format!("PreToolUse hook cancelled tool `{tool_name}`"),
+                        ),
+                    }
+                } else if pre_hook_result.is_denied() {
+                    PermissionOutcome::Deny {
+                        reason: format_hook_message(
+                            &pre_hook_result,
+                            &format!("PreToolUse hook denied tool `{tool_name}`"),
+                        ),
+                    }
+                } else if let Some(prompt) = prompter.as_mut() {
+                    self.permission_policy.authorize_with_context(
+                        &tool_name,
+                        &effective_input,
+                        &permission_context,
+                        Some(*prompt),
+                    )
                 } else {
-                    self.permission_policy.authorize(&tool_name, &input, None)
+                    self.permission_policy.authorize_with_context(
+                        &tool_name,
+                        &effective_input,
+                        &permission_context,
+                        None,
+                    )
                 };
 
                 let result_message = match permission_outcome {
                     PermissionOutcome::Allow => {
-                        let pre_hook_result = self.hook_runner.run_pre_tool_use(&tool_name, &input);
-                        if pre_hook_result.is_denied() {
-                            let deny_message = format!("PreToolUse hook denied tool `{tool_name}`");
-                            ConversationMessage::tool_result(
-                                tool_use_id,
-                                tool_name,
-                                format_hook_message(&pre_hook_result, &deny_message),
-                                true,
+                        let (mut output, mut is_error) =
+                            match self.tool_executor.execute(&tool_name, &effective_input) {
+                                Ok(output) => (output, false),
+                                Err(error) => (error.to_string(), true),
+                            };
+                        output = merge_hook_feedback(pre_hook_result.messages(), output, false);
+
+                        let post_hook_result = if is_error {
+                            self.run_post_tool_use_failure_hook(
+                                &tool_name,
+                                &effective_input,
+                                &output,
                             )
                         } else {
-                            let (mut output, mut is_error) =
-                                match self.tool_executor.execute(&tool_name, &input) {
-                                    Ok(output) => (output, false),
-                                    Err(error) => (error.to_string(), true),
-                                };
-                            output = merge_hook_feedback(pre_hook_result.messages(), output, false);
-
-                            let post_hook_result = self
-                                .hook_runner
-                                .run_post_tool_use(&tool_name, &input, &output, is_error);
-                            if post_hook_result.is_denied() {
-                                is_error = true;
-                            }
-                            output = merge_hook_feedback(
-                                post_hook_result.messages(),
-                                output,
-                                post_hook_result.is_denied(),
-                            );
-
-                            ConversationMessage::tool_result(
-                                tool_use_id,
-                                tool_name,
-                                output,
-                                is_error,
+                            self.run_post_tool_use_hook(
+                                &tool_name,
+                                &effective_input,
+                                &output,
+                                false,
                             )
+                        };
+                        if post_hook_result.is_denied() || post_hook_result.is_cancelled() {
+                            is_error = true;
                         }
+                        output = merge_hook_feedback(
+                            post_hook_result.messages(),
+                            output,
+                            post_hook_result.is_denied() || post_hook_result.is_cancelled(),
+                        );
+
+                        ConversationMessage::tool_result(tool_use_id, tool_name, output, is_error)
                     }
-                    PermissionOutcome::Deny { reason } => {
-                        ConversationMessage::tool_result(tool_use_id, tool_name, reason, true)
-                    }
+                    PermissionOutcome::Deny { reason } => ConversationMessage::tool_result(
+                        tool_use_id,
+                        tool_name,
+                        merge_hook_feedback(pre_hook_result.messages(), reason, true),
+                        true,
+                    ),
                 };
-                self.record_tool_finished(iterations, &result_message);
                 self.session.messages.push(result_message.clone());
                 tool_results.push(result_message);
             }
         }
 
-        let summary = TurnSummary {
+        Ok(TurnSummary {
             assistant_messages,
             tool_results,
             iterations,
             usage: self.usage_tracker.cumulative_usage(),
-        };
-        self.record_turn_completed(&summary);
-        Ok(summary)
+        })
     }
 
     #[must_use]
@@ -323,126 +410,6 @@ where
     pub fn into_session(self) -> Session {
         self.session
     }
-
-    fn record_turn_started(&self, user_input: &str) {
-        if let Some(tracer) = &self.session_tracer {
-            let mut attributes = Map::new();
-            attributes.insert(
-                "message_count_before".to_string(),
-                Value::from(u64::try_from(self.session.messages.len()).unwrap_or(u64::MAX)),
-            );
-            attributes.insert(
-                "input_chars".to_string(),
-                Value::from(u64::try_from(user_input.chars().count()).unwrap_or(u64::MAX)),
-            );
-            tracer.record("turn_started", attributes);
-        }
-    }
-
-    fn record_assistant_iteration(
-        &self,
-        iteration: usize,
-        assistant_message: &ConversationMessage,
-        pending_tool_count: usize,
-    ) {
-        if let Some(tracer) = &self.session_tracer {
-            let mut attributes = Map::new();
-            attributes.insert(
-                "iteration".to_string(),
-                Value::from(u64::try_from(iteration).unwrap_or(u64::MAX)),
-            );
-            attributes.insert(
-                "block_count".to_string(),
-                Value::from(u64::try_from(assistant_message.blocks.len()).unwrap_or(u64::MAX)),
-            );
-            attributes.insert(
-                "pending_tool_count".to_string(),
-                Value::from(u64::try_from(pending_tool_count).unwrap_or(u64::MAX)),
-            );
-            tracer.record("assistant_iteration_completed", attributes);
-        }
-    }
-
-    fn record_tool_started(&self, iteration: usize, tool_name: &str) {
-        if let Some(tracer) = &self.session_tracer {
-            let mut attributes = Map::new();
-            attributes.insert(
-                "iteration".to_string(),
-                Value::from(u64::try_from(iteration).unwrap_or(u64::MAX)),
-            );
-            attributes.insert(
-                "tool_name".to_string(),
-                Value::String(tool_name.to_string()),
-            );
-            tracer.record("tool_execution_started", attributes);
-        }
-    }
-
-    fn record_tool_finished(&self, iteration: usize, result_message: &ConversationMessage) {
-        let Some(tracer) = &self.session_tracer else {
-            return;
-        };
-        let Some(ContentBlock::ToolResult {
-            tool_name,
-            is_error,
-            output,
-            ..
-        }) = result_message.blocks.first()
-        else {
-            return;
-        };
-        let mut attributes = Map::new();
-        attributes.insert(
-            "iteration".to_string(),
-            Value::from(u64::try_from(iteration).unwrap_or(u64::MAX)),
-        );
-        attributes.insert("tool_name".to_string(), Value::String(tool_name.clone()));
-        attributes.insert("is_error".to_string(), Value::Bool(*is_error));
-        attributes.insert(
-            "output_chars".to_string(),
-            Value::from(u64::try_from(output.chars().count()).unwrap_or(u64::MAX)),
-        );
-        tracer.record("tool_execution_finished", attributes);
-    }
-
-    fn record_turn_completed(&self, summary: &TurnSummary) {
-        if let Some(tracer) = &self.session_tracer {
-            let mut attributes = Map::new();
-            attributes.insert(
-                "assistant_message_count".to_string(),
-                Value::from(u64::try_from(summary.assistant_messages.len()).unwrap_or(u64::MAX)),
-            );
-            attributes.insert(
-                "tool_result_count".to_string(),
-                Value::from(u64::try_from(summary.tool_results.len()).unwrap_or(u64::MAX)),
-            );
-            attributes.insert(
-                "iterations".to_string(),
-                Value::from(u64::try_from(summary.iterations).unwrap_or(u64::MAX)),
-            );
-            attributes.insert(
-                "total_input_tokens".to_string(),
-                Value::from(summary.usage.input_tokens),
-            );
-            attributes.insert(
-                "total_output_tokens".to_string(),
-                Value::from(summary.usage.output_tokens),
-            );
-            tracer.record("turn_completed", attributes);
-        }
-    }
-
-    fn record_turn_failed(&self, iteration: usize, error: &RuntimeError) {
-        if let Some(tracer) = &self.session_tracer {
-            let mut attributes = Map::new();
-            attributes.insert(
-                "iteration".to_string(),
-                Value::from(u64::try_from(iteration).unwrap_or(u64::MAX)),
-            );
-            attributes.insert("error".to_string(), Value::String(error.to_string()));
-            tracer.record("turn_failed", attributes);
-        }
-    }
 }
 
 fn build_assistant_message(
@@ -566,8 +533,6 @@ mod tests {
     use crate::session::{ContentBlock, MessageRole, Session};
     use crate::usage::TokenUsage;
     use std::path::PathBuf;
-    use std::sync::Arc;
-    use telemetry::{MemoryTelemetrySink, SessionTracer, TelemetryEvent};
 
     struct ScriptedApiClient {
         call_count: usize,
@@ -680,39 +645,6 @@ mod tests {
         ));
     }
 
-    #[test]
-    fn records_runtime_session_trace_events() {
-        let sink = Arc::new(MemoryTelemetrySink::default());
-        let tracer = SessionTracer::new("session-runtime", sink.clone());
-        let mut runtime = ConversationRuntime::new(
-            Session::new(),
-            ScriptedApiClient { call_count: 0 },
-            StaticToolExecutor::new().register("add", |_input| Ok("4".to_string())),
-            PermissionPolicy::new(PermissionMode::WorkspaceWrite),
-            vec!["system".to_string()],
-        )
-        .with_session_tracer(tracer);
-
-        runtime
-            .run_turn("what is 2 + 2?", Some(&mut PromptAllowOnce))
-            .expect("conversation loop should succeed");
-
-        let events = sink.events();
-        let trace_names = events
-            .iter()
-            .filter_map(|event| match event {
-                TelemetryEvent::SessionTrace(trace) => Some(trace.name.as_str()),
-                _ => None,
-            })
-            .collect::<Vec<_>>();
-
-        assert!(trace_names.contains(&"turn_started"));
-        assert!(trace_names.contains(&"assistant_iteration_completed"));
-        assert!(trace_names.contains(&"tool_execution_started"));
-        assert!(trace_names.contains(&"tool_execution_finished"));
-        assert!(trace_names.contains(&"turn_completed"));
-    }
-
     #[test]
     fn records_denied_tool_results_when_prompt_rejects() {
         struct RejectPrompter;
@@ -801,9 +733,10 @@ mod tests {
             }),
             PermissionPolicy::new(PermissionMode::DangerFullAccess),
             vec!["system".to_string()],
-            &RuntimeFeatureConfig::default().with_hooks(RuntimeHookConfig::new(
+            RuntimeFeatureConfig::default().with_hooks(RuntimeHookConfig::new(
                 vec![shell_snippet("printf 'blocked by hook'; exit 2")],
                 Vec::new(),
+                Vec::new(),
             )),
         );
 
@@ -867,9 +800,10 @@ mod tests {
             StaticToolExecutor::new().register("add", |_input| Ok("4".to_string())),
             PermissionPolicy::new(PermissionMode::DangerFullAccess),
             vec!["system".to_string()],
-            &RuntimeFeatureConfig::default().with_hooks(RuntimeHookConfig::new(
+            RuntimeFeatureConfig::default().with_hooks(RuntimeHookConfig::new(
                 vec![shell_snippet("printf 'pre hook ran'")],
                 vec![shell_snippet("printf 'post hook ran'")],
+                Vec::new(),
             )),
         );
 

rust/crates/runtime/src/hooks.rs

@@ -1,29 +1,90 @@
 use std::ffi::OsStr;
-use std::process::Command;
+use std::io::Write;
+use std::process::{Command, Stdio};
+use std::sync::{
+    atomic::{AtomicBool, Ordering},
+    Arc,
+};
+use std::thread;
+use std::time::Duration;
 
-use serde_json::json;
+use serde_json::{json, Value};
 
 use crate::config::{RuntimeFeatureConfig, RuntimeHookConfig};
+use crate::permissions::PermissionOverride;
+
+pub type HookPermissionDecision = PermissionOverride;
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum HookEvent {
     PreToolUse,
     PostToolUse,
+    PostToolUseFailure,
 }
 
 impl HookEvent {
-    fn as_str(self) -> &'static str {
+    #[must_use]
+    pub fn as_str(self) -> &'static str {
         match self {
             Self::PreToolUse => "PreToolUse",
             Self::PostToolUse => "PostToolUse",
+            Self::PostToolUseFailure => "PostToolUseFailure",
         }
     }
 }
 
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum HookProgressEvent {
+    Started {
+        event: HookEvent,
+        tool_name: String,
+        command: String,
+    },
+    Completed {
+        event: HookEvent,
+        tool_name: String,
+        command: String,
+    },
+    Cancelled {
+        event: HookEvent,
+        tool_name: String,
+        command: String,
+    },
+}
+
+pub trait HookProgressReporter {
+    fn on_event(&mut self, event: &HookProgressEvent);
+}
+
+#[derive(Debug, Clone, Default)]
+pub struct HookAbortSignal {
+    aborted: Arc<AtomicBool>,
+}
+
+impl HookAbortSignal {
+    #[must_use]
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    pub fn abort(&self) {
+        self.aborted.store(true, Ordering::SeqCst);
+    }
+
+    #[must_use]
+    pub fn is_aborted(&self) -> bool {
+        self.aborted.load(Ordering::SeqCst)
+    }
+}
+
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct HookRunResult {
     denied: bool,
+    cancelled: bool,
     messages: Vec<String>,
+    permission_override: Option<PermissionOverride>,
+    permission_reason: Option<String>,
+    updated_input: Option<String>,
 }
 
 impl HookRunResult {
@@ -31,7 +92,11 @@ impl HookRunResult {
     pub fn allow(messages: Vec<String>) -> Self {
         Self {
             denied: false,
+            cancelled: false,
             messages,
+            permission_override: None,
+            permission_reason: None,
+            updated_input: None,
         }
     }
 
@@ -40,10 +105,40 @@ impl HookRunResult {
         self.denied
     }
 
+    #[must_use]
+    pub fn is_cancelled(&self) -> bool {
+        self.cancelled
+    }
+
     #[must_use]
     pub fn messages(&self) -> &[String] {
         &self.messages
     }
+
+    #[must_use]
+    pub fn permission_override(&self) -> Option<PermissionOverride> {
+        self.permission_override
+    }
+
+    #[must_use]
+    pub fn permission_decision(&self) -> Option<HookPermissionDecision> {
+        self.permission_override
+    }
+
+    #[must_use]
+    pub fn permission_reason(&self) -> Option<&str> {
+        self.permission_reason.as_deref()
+    }
+
+    #[must_use]
+    pub fn updated_input(&self) -> Option<&str> {
+        self.updated_input.as_deref()
+    }
+
+    #[must_use]
+    pub fn updated_input_json(&self) -> Option<&str> {
+        self.updated_input()
+    }
 }
 
 #[derive(Debug, Clone, PartialEq, Eq, Default)]
@@ -64,6 +159,17 @@ impl HookRunner {
 
     #[must_use]
     pub fn run_pre_tool_use(&self, tool_name: &str, tool_input: &str) -> HookRunResult {
+        self.run_pre_tool_use_with_context(tool_name, tool_input, None, None)
+    }
+
+    #[must_use]
+    pub fn run_pre_tool_use_with_context(
+        &self,
+        tool_name: &str,
+        tool_input: &str,
+        abort_signal: Option<&HookAbortSignal>,
+        reporter: Option<&mut dyn HookProgressReporter>,
+    ) -> HookRunResult {
         Self::run_commands(
             HookEvent::PreToolUse,
             self.config.pre_tool_use(),
@@ -71,9 +177,21 @@ impl HookRunner {
             tool_input,
             None,
             false,
+            abort_signal,
+            reporter,
         )
     }
 
+    #[must_use]
+    pub fn run_pre_tool_use_with_signal(
+        &self,
+        tool_name: &str,
+        tool_input: &str,
+        abort_signal: Option<&HookAbortSignal>,
+    ) -> HookRunResult {
+        self.run_pre_tool_use_with_context(tool_name, tool_input, abort_signal, None)
+    }
+
     #[must_use]
     pub fn run_post_tool_use(
         &self,
@@ -81,6 +199,26 @@ impl HookRunner {
         tool_input: &str,
         tool_output: &str,
         is_error: bool,
+    ) -> HookRunResult {
+        self.run_post_tool_use_with_context(
+            tool_name,
+            tool_input,
+            tool_output,
+            is_error,
+            None,
+            None,
+        )
+    }
+
+    #[must_use]
+    pub fn run_post_tool_use_with_context(
+        &self,
+        tool_name: &str,
+        tool_input: &str,
+        tool_output: &str,
+        is_error: bool,
+        abort_signal: Option<&HookAbortSignal>,
+        reporter: Option<&mut dyn HookProgressReporter>,
     ) -> HookRunResult {
         Self::run_commands(
             HookEvent::PostToolUse,
@@ -89,9 +227,79 @@ impl HookRunner {
             tool_input,
             Some(tool_output),
             is_error,
+            abort_signal,
+            reporter,
         )
     }
 
+    #[must_use]
+    pub fn run_post_tool_use_with_signal(
+        &self,
+        tool_name: &str,
+        tool_input: &str,
+        tool_output: &str,
+        is_error: bool,
+        abort_signal: Option<&HookAbortSignal>,
+    ) -> HookRunResult {
+        self.run_post_tool_use_with_context(
+            tool_name,
+            tool_input,
+            tool_output,
+            is_error,
+            abort_signal,
+            None,
+        )
+    }
+
+    #[must_use]
+    pub fn run_post_tool_use_failure(
+        &self,
+        tool_name: &str,
+        tool_input: &str,
+        tool_error: &str,
+    ) -> HookRunResult {
+        self.run_post_tool_use_failure_with_context(tool_name, tool_input, tool_error, None, None)
+    }
+
+    #[must_use]
+    pub fn run_post_tool_use_failure_with_context(
+        &self,
+        tool_name: &str,
+        tool_input: &str,
+        tool_error: &str,
+        abort_signal: Option<&HookAbortSignal>,
+        reporter: Option<&mut dyn HookProgressReporter>,
+    ) -> HookRunResult {
+        Self::run_commands(
+            HookEvent::PostToolUseFailure,
+            self.config.post_tool_use_failure(),
+            tool_name,
+            tool_input,
+            Some(tool_error),
+            true,
+            abort_signal,
+            reporter,
+        )
+    }
+
+    #[must_use]
+    pub fn run_post_tool_use_failure_with_signal(
+        &self,
+        tool_name: &str,
+        tool_input: &str,
+        tool_error: &str,
+        abort_signal: Option<&HookAbortSignal>,
+    ) -> HookRunResult {
+        self.run_post_tool_use_failure_with_context(
+            tool_name,
+            tool_input,
+            tool_error,
+            abort_signal,
+            None,
+        )
+    }
+
+    #[allow(clippy::too_many_arguments)]
     fn run_commands(
         event: HookEvent,
         commands: &[String],
@@ -99,123 +307,299 @@ impl HookRunner {
         tool_input: &str,
         tool_output: Option<&str>,
         is_error: bool,
+        abort_signal: Option<&HookAbortSignal>,
+        mut reporter: Option<&mut dyn HookProgressReporter>,
     ) -> HookRunResult {
         if commands.is_empty() {
             return HookRunResult::allow(Vec::new());
         }
 
-        let payload = json!({
-            "hook_event_name": event.as_str(),
-            "tool_name": tool_name,
-            "tool_input": parse_tool_input(tool_input),
-            "tool_input_json": tool_input,
-            "tool_output": tool_output,
-            "tool_result_is_error": is_error,
-        })
-        .to_string();
-        let invocation = HookInvocation {
-            event,
-            tool_name,
-            tool_input,
-            tool_output,
-            is_error,
-            payload: &payload,
-        };
+        if abort_signal.is_some_and(HookAbortSignal::is_aborted) {
+            return HookRunResult {
+                denied: false,
+                cancelled: true,
+                messages: vec![format!(
+                    "{} hook cancelled before execution",
+                    event.as_str()
+                )],
+                permission_override: None,
+                permission_reason: None,
+                updated_input: None,
+            };
+        }
 
-        let mut messages = Vec::new();
+        let payload = hook_payload(event, tool_name, tool_input, tool_output, is_error).to_string();
+        let mut result = HookRunResult::allow(Vec::new());
 
         for command in commands {
-            match Self::run_command(command, &invocation) {
-                HookCommandOutcome::Allow { message } => {
-                    if let Some(message) = message {
-                        messages.push(message);
+            if let Some(reporter) = reporter.as_deref_mut() {
+                reporter.on_event(&HookProgressEvent::Started {
+                    event,
+                    tool_name: tool_name.to_string(),
+                    command: command.clone(),
+                });
+            }
+
+            match Self::run_command(
+                command,
+                event,
+                tool_name,
+                tool_input,
+                tool_output,
+                is_error,
+                &payload,
+                abort_signal,
+            ) {
+                HookCommandOutcome::Allow { parsed } => {
+                    if let Some(reporter) = reporter.as_deref_mut() {
+                        reporter.on_event(&HookProgressEvent::Completed {
+                            event,
+                            tool_name: tool_name.to_string(),
+                            command: command.clone(),
+                        });
                     }
+                    merge_parsed_hook_output(&mut result, parsed);
                 }
-                HookCommandOutcome::Deny { message } => {
-                    let message = message.unwrap_or_else(|| {
-                        format!("{} hook denied tool `{tool_name}`", event.as_str())
-                    });
-                    messages.push(message);
-                    return HookRunResult {
-                        denied: true,
-                        messages,
-                    };
+                HookCommandOutcome::Deny { parsed } => {
+                    if let Some(reporter) = reporter.as_deref_mut() {
+                        reporter.on_event(&HookProgressEvent::Completed {
+                            event,
+                            tool_name: tool_name.to_string(),
+                            command: command.clone(),
+                        });
+                    }
+                    merge_parsed_hook_output(&mut result, parsed);
+                    result.denied = true;
+                    return result;
+                }
+                HookCommandOutcome::Warn { message } => {
+                    if let Some(reporter) = reporter.as_deref_mut() {
+                        reporter.on_event(&HookProgressEvent::Completed {
+                            event,
+                            tool_name: tool_name.to_string(),
+                            command: command.clone(),
+                        });
+                    }
+                    result.messages.push(message);
+                }
+                HookCommandOutcome::Cancelled { message } => {
+                    if let Some(reporter) = reporter.as_deref_mut() {
+                        reporter.on_event(&HookProgressEvent::Cancelled {
+                            event,
+                            tool_name: tool_name.to_string(),
+                            command: command.clone(),
+                        });
+                    }
+                    result.cancelled = true;
+                    result.messages.push(message);
+                    return result;
                 }
-                HookCommandOutcome::Warn { message } => messages.push(message),
             }
         }
 
-        HookRunResult::allow(messages)
+        result
     }
 
-    fn run_command(command: &str, invocation: &HookInvocation<'_>) -> HookCommandOutcome {
+    #[allow(clippy::too_many_arguments)]
+    fn run_command(
+        command: &str,
+        event: HookEvent,
+        tool_name: &str,
+        tool_input: &str,
+        tool_output: Option<&str>,
+        is_error: bool,
+        payload: &str,
+        abort_signal: Option<&HookAbortSignal>,
+    ) -> HookCommandOutcome {
         let mut child = shell_command(command);
-        child.stdin(std::process::Stdio::piped());
-        child.stdout(std::process::Stdio::piped());
-        child.stderr(std::process::Stdio::piped());
-        child.env("HOOK_EVENT", invocation.event.as_str());
-        child.env("HOOK_TOOL_NAME", invocation.tool_name);
-        child.env("HOOK_TOOL_INPUT", invocation.tool_input);
-        child.env(
-            "HOOK_TOOL_IS_ERROR",
-            if invocation.is_error { "1" } else { "0" },
-        );
-        if let Some(tool_output) = invocation.tool_output {
+        child.stdin(Stdio::piped());
+        child.stdout(Stdio::piped());
+        child.stderr(Stdio::piped());
+        child.env("HOOK_EVENT", event.as_str());
+        child.env("HOOK_TOOL_NAME", tool_name);
+        child.env("HOOK_TOOL_INPUT", tool_input);
+        child.env("HOOK_TOOL_IS_ERROR", if is_error { "1" } else { "0" });
+        if let Some(tool_output) = tool_output {
             child.env("HOOK_TOOL_OUTPUT", tool_output);
         }
 
-        match child.output_with_stdin(invocation.payload.as_bytes()) {
-            Ok(output) => {
+        match child.output_with_stdin(payload.as_bytes(), abort_signal) {
+            Ok(CommandExecution::Finished(output)) => {
                 let stdout = String::from_utf8_lossy(&output.stdout).trim().to_string();
                 let stderr = String::from_utf8_lossy(&output.stderr).trim().to_string();
-                let message = (!stdout.is_empty()).then_some(stdout);
+                let parsed = parse_hook_output(&stdout);
                 match output.status.code() {
-                    Some(0) => HookCommandOutcome::Allow { message },
-                    Some(2) => HookCommandOutcome::Deny { message },
+                    Some(0) => {
+                        if parsed.deny {
+                            HookCommandOutcome::Deny { parsed }
+                        } else {
+                            HookCommandOutcome::Allow { parsed }
+                        }
+                    }
+                    Some(2) => HookCommandOutcome::Deny {
+                        parsed: parsed.with_fallback_message(format!(
+                            "{} hook denied tool `{tool_name}`",
+                            event.as_str()
+                        )),
+                    },
                     Some(code) => HookCommandOutcome::Warn {
                         message: format_hook_warning(
                             command,
                             code,
-                            message.as_deref(),
+                            parsed.primary_message(),
                             stderr.as_str(),
                         ),
                     },
                     None => HookCommandOutcome::Warn {
                         message: format!(
-                            "{} hook `{command}` terminated by signal while handling `{}`",
-                            invocation.event.as_str(),
-                            invocation.tool_name
+                            "{} hook `{command}` terminated by signal while handling `{tool_name}`",
+                            event.as_str()
                         ),
                     },
                 }
             }
+            Ok(CommandExecution::Cancelled) => HookCommandOutcome::Cancelled {
+                message: format!(
+                    "{} hook `{command}` cancelled while handling `{tool_name}`",
+                    event.as_str()
+                ),
+            },
             Err(error) => HookCommandOutcome::Warn {
                 message: format!(
                     "{} hook `{command}` failed to start for `{tool_name}`: {error}",
-                    invocation.event.as_str(),
-                    tool_name = invocation.tool_name
+                    event.as_str()
                 ),
             },
         }
     }
 }
 
-struct HookInvocation<'a> {
-    event: HookEvent,
-    tool_name: &'a str,
-    tool_input: &'a str,
-    tool_output: Option<&'a str>,
-    is_error: bool,
-    payload: &'a str,
-}
-
 enum HookCommandOutcome {
-    Allow { message: Option<String> },
-    Deny { message: Option<String> },
+    Allow { parsed: ParsedHookOutput },
+    Deny { parsed: ParsedHookOutput },
     Warn { message: String },
+    Cancelled { message: String },
 }
 
-fn parse_tool_input(tool_input: &str) -> serde_json::Value {
+#[derive(Debug, Clone, PartialEq, Eq, Default)]
+struct ParsedHookOutput {
+    messages: Vec<String>,
+    deny: bool,
+    permission_override: Option<PermissionOverride>,
+    permission_reason: Option<String>,
+    updated_input: Option<String>,
+}
+
+impl ParsedHookOutput {
+    fn with_fallback_message(mut self, fallback: String) -> Self {
+        if self.messages.is_empty() {
+            self.messages.push(fallback);
+        }
+        self
+    }
+
+    fn primary_message(&self) -> Option<&str> {
+        self.messages.first().map(String::as_str)
+    }
+}
+
+fn merge_parsed_hook_output(target: &mut HookRunResult, parsed: ParsedHookOutput) {
+    target.messages.extend(parsed.messages);
+    if parsed.permission_override.is_some() {
+        target.permission_override = parsed.permission_override;
+    }
+    if parsed.permission_reason.is_some() {
+        target.permission_reason = parsed.permission_reason;
+    }
+    if parsed.updated_input.is_some() {
+        target.updated_input = parsed.updated_input;
+    }
+}
+
+fn parse_hook_output(stdout: &str) -> ParsedHookOutput {
+    if stdout.is_empty() {
+        return ParsedHookOutput::default();
+    }
+
+    let Ok(Value::Object(root)) = serde_json::from_str::<Value>(stdout) else {
+        return ParsedHookOutput {
+            messages: vec![stdout.to_string()],
+            ..ParsedHookOutput::default()
+        };
+    };
+
+    let mut parsed = ParsedHookOutput::default();
+
+    if let Some(message) = root.get("systemMessage").and_then(Value::as_str) {
+        parsed.messages.push(message.to_string());
+    }
+    if let Some(message) = root.get("reason").and_then(Value::as_str) {
+        parsed.messages.push(message.to_string());
+    }
+    if root.get("continue").and_then(Value::as_bool) == Some(false)
+        || root.get("decision").and_then(Value::as_str) == Some("block")
+    {
+        parsed.deny = true;
+    }
+
+    if let Some(Value::Object(specific)) = root.get("hookSpecificOutput") {
+        if let Some(Value::String(additional_context)) = specific.get("additionalContext") {
+            parsed.messages.push(additional_context.clone());
+        }
+        if let Some(decision) = specific.get("permissionDecision").and_then(Value::as_str) {
+            parsed.permission_override = match decision {
+                "allow" => Some(PermissionOverride::Allow),
+                "deny" => Some(PermissionOverride::Deny),
+                "ask" => Some(PermissionOverride::Ask),
+                _ => None,
+            };
+        }
+        if let Some(reason) = specific
+            .get("permissionDecisionReason")
+            .and_then(Value::as_str)
+        {
+            parsed.permission_reason = Some(reason.to_string());
+        }
+        if let Some(updated_input) = specific.get("updatedInput") {
+            parsed.updated_input = serde_json::to_string(updated_input).ok();
+        }
+    }
+
+    if parsed.messages.is_empty() {
+        parsed.messages.push(stdout.to_string());
+    }
+
+    parsed
+}
+
+fn hook_payload(
+    event: HookEvent,
+    tool_name: &str,
+    tool_input: &str,
+    tool_output: Option<&str>,
+    is_error: bool,
+) -> Value {
+    match event {
+        HookEvent::PostToolUseFailure => json!({
+            "hook_event_name": event.as_str(),
+            "tool_name": tool_name,
+            "tool_input": parse_tool_input(tool_input),
+            "tool_input_json": tool_input,
+            "tool_error": tool_output,
+            "tool_result_is_error": true,
+        }),
+        _ => json!({
+            "hook_event_name": event.as_str(),
+            "tool_name": tool_name,
+            "tool_input": parse_tool_input(tool_input),
+            "tool_input_json": tool_input,
+            "tool_output": tool_output,
+            "tool_result_is_error": is_error,
+        }),
+    }
+}
+
+fn parse_tool_input(tool_input: &str) -> Value {
     serde_json::from_str(tool_input).unwrap_or_else(|_| json!({ "raw": tool_input }))
 }
 
@@ -259,17 +643,17 @@ impl CommandWithStdin {
         Self { command }
     }
 
-    fn stdin(&mut self, cfg: std::process::Stdio) -> &mut Self {
+    fn stdin(&mut self, cfg: Stdio) -> &mut Self {
         self.command.stdin(cfg);
         self
     }
 
-    fn stdout(&mut self, cfg: std::process::Stdio) -> &mut Self {
+    fn stdout(&mut self, cfg: Stdio) -> &mut Self {
         self.command.stdout(cfg);
         self
     }
 
-    fn stderr(&mut self, cfg: std::process::Stdio) -> &mut Self {
+    fn stderr(&mut self, cfg: Stdio) -> &mut Self {
         self.command.stderr(cfg);
         self
     }
@@ -283,26 +667,64 @@ impl CommandWithStdin {
         self
     }
 
-    fn output_with_stdin(&mut self, stdin: &[u8]) -> std::io::Result<std::process::Output> {
+    fn output_with_stdin(
+        &mut self,
+        stdin: &[u8],
+        abort_signal: Option<&HookAbortSignal>,
+    ) -> std::io::Result<CommandExecution> {
         let mut child = self.command.spawn()?;
         if let Some(mut child_stdin) = child.stdin.take() {
-            use std::io::Write;
             child_stdin.write_all(stdin)?;
         }
-        child.wait_with_output()
+
+        loop {
+            if abort_signal.is_some_and(HookAbortSignal::is_aborted) {
+                let _ = child.kill();
+                let _ = child.wait_with_output();
+                return Ok(CommandExecution::Cancelled);
+            }
+
+            match child.try_wait()? {
+                Some(_) => return child.wait_with_output().map(CommandExecution::Finished),
+                None => thread::sleep(Duration::from_millis(20)),
+            }
+        }
     }
 }
 
+enum CommandExecution {
+    Finished(std::process::Output),
+    Cancelled,
+}
+
 #[cfg(test)]
 mod tests {
-    use super::{HookRunResult, HookRunner};
+    use std::thread;
+    use std::time::Duration;
+
+    use super::{
+        HookAbortSignal, HookEvent, HookProgressEvent, HookProgressReporter, HookRunResult,
+        HookRunner,
+    };
     use crate::config::{RuntimeFeatureConfig, RuntimeHookConfig};
+    use crate::permissions::PermissionOverride;
+
+    struct RecordingReporter {
+        events: Vec<HookProgressEvent>,
+    }
+
+    impl HookProgressReporter for RecordingReporter {
+        fn on_event(&mut self, event: &HookProgressEvent) {
+            self.events.push(event.clone());
+        }
+    }
 
     #[test]
     fn allows_exit_code_zero_and_captures_stdout() {
         let runner = HookRunner::new(RuntimeHookConfig::new(
             vec![shell_snippet("printf 'pre ok'")],
             Vec::new(),
+            Vec::new(),
         ));
 
         let result = runner.run_pre_tool_use("Read", r#"{"path":"README.md"}"#);
@@ -315,6 +737,7 @@ mod tests {
         let runner = HookRunner::new(RuntimeHookConfig::new(
             vec![shell_snippet("printf 'blocked by hook'; exit 2")],
             Vec::new(),
+            Vec::new(),
         ));
 
         let result = runner.run_pre_tool_use("Bash", r#"{"command":"pwd"}"#);
@@ -329,6 +752,7 @@ mod tests {
             RuntimeHookConfig::new(
                 vec![shell_snippet("printf 'warning hook'; exit 1")],
                 Vec::new(),
+                Vec::new(),
             ),
         ));
 
@@ -341,6 +765,82 @@ mod tests {
             .any(|message| message.contains("allowing tool execution to continue")));
     }
 
+    #[test]
+    fn parses_pre_hook_permission_override_and_updated_input() {
+        let runner = HookRunner::new(RuntimeHookConfig::new(
+            vec![shell_snippet(
+                r#"printf '%s' '{"systemMessage":"updated","hookSpecificOutput":{"permissionDecision":"allow","permissionDecisionReason":"hook ok","updatedInput":{"command":"git status"}}}'"#,
+            )],
+            Vec::new(),
+            Vec::new(),
+        ));
+
+        let result = runner.run_pre_tool_use("bash", r#"{"command":"pwd"}"#);
+
+        assert_eq!(
+            result.permission_override(),
+            Some(PermissionOverride::Allow)
+        );
+        assert_eq!(result.permission_reason(), Some("hook ok"));
+        assert_eq!(result.updated_input(), Some(r#"{"command":"git status"}"#));
+        assert!(result.messages().iter().any(|message| message == "updated"));
+    }
+
+    #[test]
+    fn runs_post_tool_use_failure_hooks() {
+        let runner = HookRunner::new(RuntimeHookConfig::new(
+            Vec::new(),
+            Vec::new(),
+            vec![shell_snippet("printf 'failure hook ran'")],
+        ));
+
+        let result =
+            runner.run_post_tool_use_failure("bash", r#"{"command":"false"}"#, "command failed");
+
+        assert!(!result.is_denied());
+        assert_eq!(result.messages(), &["failure hook ran".to_string()]);
+    }
+
+    #[test]
+    fn abort_signal_cancels_long_running_hook_and_reports_progress() {
+        let runner = HookRunner::new(RuntimeHookConfig::new(
+            vec![shell_snippet("sleep 5")],
+            Vec::new(),
+            Vec::new(),
+        ));
+        let abort_signal = HookAbortSignal::new();
+        let abort_signal_for_thread = abort_signal.clone();
+        let mut reporter = RecordingReporter { events: Vec::new() };
+
+        thread::spawn(move || {
+            thread::sleep(Duration::from_millis(100));
+            abort_signal_for_thread.abort();
+        });
+
+        let result = runner.run_pre_tool_use_with_context(
+            "bash",
+            r#"{"command":"sleep 5"}"#,
+            Some(&abort_signal),
+            Some(&mut reporter),
+        );
+
+        assert!(result.is_cancelled());
+        assert!(reporter.events.iter().any(|event| matches!(
+            event,
+            HookProgressEvent::Started {
+                event: HookEvent::PreToolUse,
+                ..
+            }
+        )));
+        assert!(reporter.events.iter().any(|event| matches!(
+            event,
+            HookProgressEvent::Cancelled {
+                event: HookEvent::PreToolUse,
+                ..
+            }
+        )));
+    }
+
     #[cfg(windows)]
     fn shell_snippet(script: &str) -> String {
         script.replace('\'', "\"")

rust/crates/runtime/src/lib.rs

@@ -28,7 +28,7 @@ pub use config::{
     McpConfigCollection, McpOAuthConfig, McpRemoteServerConfig, McpSdkServerConfig,
     McpServerConfig, McpStdioServerConfig, McpTransport, McpWebSocketServerConfig, OAuthConfig,
     ResolvedPermissionMode, RuntimeConfig, RuntimeFeatureConfig, RuntimeHookConfig,
-    ScopedMcpServerConfig, CLAUDE_CODE_SETTINGS_SCHEMA_NAME,
+    RuntimePermissionRuleConfig, ScopedMcpServerConfig, CLAUDE_CODE_SETTINGS_SCHEMA_NAME,
 };
 pub use conversation::{
     ApiClient, ApiRequest, AssistantEvent, ConversationRuntime, RuntimeError, StaticToolExecutor,
@@ -39,7 +39,9 @@ pub use file_ops::{
     GrepSearchInput, GrepSearchOutput, ReadFileOutput, StructuredPatchHunk, TextFilePayload,
     WriteFileOutput,
 };
-pub use hooks::{HookEvent, HookRunResult, HookRunner};
+pub use hooks::{
+    HookAbortSignal, HookEvent, HookProgressEvent, HookProgressReporter, HookRunResult, HookRunner,
+};
 pub use mcp::{
     mcp_server_signature, mcp_tool_name, mcp_tool_prefix, normalize_name_for_mcp,
     scoped_mcp_config_hash, unwrap_ccr_proxy_url,
@@ -64,8 +66,8 @@ pub use oauth::{
     PkceChallengeMethod, PkceCodePair,
 };
 pub use permissions::{
-    PermissionMode, PermissionOutcome, PermissionPolicy, PermissionPromptDecision,
-    PermissionPrompter, PermissionRequest,
+    PermissionContext, PermissionMode, PermissionOutcome, PermissionOverride, PermissionPolicy,
+    PermissionPromptDecision, PermissionPrompter, PermissionRequest,
 };
 pub use prompt::{
     load_system_prompt, prepend_bullets, ContextFile, ProjectContext, PromptBuildError,

rust/crates/runtime/src/mcp_stdio.rs

@@ -1144,20 +1144,8 @@ mod tests {
     }
 
     fn cleanup_script(script_path: &Path) {
-        if let Err(error) = fs::remove_file(script_path) {
-            assert_eq!(
-                error.kind(),
-                std::io::ErrorKind::NotFound,
-                "cleanup script: {error}"
-            );
-        }
-        if let Err(error) = fs::remove_dir_all(script_path.parent().expect("script parent")) {
-            assert_eq!(
-                error.kind(),
-                std::io::ErrorKind::NotFound,
-                "cleanup dir: {error}"
-            );
-        }
+        fs::remove_file(script_path).expect("cleanup script");
+        fs::remove_dir_all(script_path.parent().expect("script parent")).expect("cleanup dir");
     }
 
     fn manager_server_config(

rust/crates/runtime/src/permissions.rs

@@ -1,5 +1,9 @@
 use std::collections::BTreeMap;
 
+use serde_json::Value;
+
+use crate::config::RuntimePermissionRuleConfig;
+
 #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
 pub enum PermissionMode {
     ReadOnly,
@@ -22,12 +26,49 @@ impl PermissionMode {
     }
 }
 
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum PermissionOverride {
+    Allow,
+    Deny,
+    Ask,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Default)]
+pub struct PermissionContext {
+    override_decision: Option<PermissionOverride>,
+    override_reason: Option<String>,
+}
+
+impl PermissionContext {
+    #[must_use]
+    pub fn new(
+        override_decision: Option<PermissionOverride>,
+        override_reason: Option<String>,
+    ) -> Self {
+        Self {
+            override_decision,
+            override_reason,
+        }
+    }
+
+    #[must_use]
+    pub fn override_decision(&self) -> Option<PermissionOverride> {
+        self.override_decision
+    }
+
+    #[must_use]
+    pub fn override_reason(&self) -> Option<&str> {
+        self.override_reason.as_deref()
+    }
+}
+
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct PermissionRequest {
     pub tool_name: String,
     pub input: String,
     pub current_mode: PermissionMode,
     pub required_mode: PermissionMode,
+    pub reason: Option<String>,
 }
 
 #[derive(Debug, Clone, PartialEq, Eq)]
@@ -50,6 +91,9 @@ pub enum PermissionOutcome {
 pub struct PermissionPolicy {
     active_mode: PermissionMode,
     tool_requirements: BTreeMap<String, PermissionMode>,
+    allow_rules: Vec<PermissionRule>,
+    deny_rules: Vec<PermissionRule>,
+    ask_rules: Vec<PermissionRule>,
 }
 
 impl PermissionPolicy {
@@ -58,6 +102,9 @@ impl PermissionPolicy {
         Self {
             active_mode,
             tool_requirements: BTreeMap::new(),
+            allow_rules: Vec::new(),
+            deny_rules: Vec::new(),
+            ask_rules: Vec::new(),
         }
     }
 
@@ -72,6 +119,26 @@ impl PermissionPolicy {
         self
     }
 
+    #[must_use]
+    pub fn with_permission_rules(mut self, config: &RuntimePermissionRuleConfig) -> Self {
+        self.allow_rules = config
+            .allow()
+            .iter()
+            .map(|rule| PermissionRule::parse(rule))
+            .collect();
+        self.deny_rules = config
+            .deny()
+            .iter()
+            .map(|rule| PermissionRule::parse(rule))
+            .collect();
+        self.ask_rules = config
+            .ask()
+            .iter()
+            .map(|rule| PermissionRule::parse(rule))
+            .collect();
+        self
+    }
+
     #[must_use]
     pub fn active_mode(&self) -> PermissionMode {
         self.active_mode
@@ -90,38 +157,121 @@ impl PermissionPolicy {
         &self,
         tool_name: &str,
         input: &str,
-        mut prompter: Option<&mut dyn PermissionPrompter>,
+        prompter: Option<&mut dyn PermissionPrompter>,
     ) -> PermissionOutcome {
-        let current_mode = self.active_mode();
-        let required_mode = self.required_mode_for(tool_name);
-        if current_mode == PermissionMode::Allow || current_mode >= required_mode {
-            return PermissionOutcome::Allow;
+        self.authorize_with_context(tool_name, input, &PermissionContext::default(), prompter)
+    }
+
+    #[must_use]
+    #[allow(clippy::too_many_lines)]
+    pub fn authorize_with_context(
+        &self,
+        tool_name: &str,
+        input: &str,
+        context: &PermissionContext,
+        prompter: Option<&mut dyn PermissionPrompter>,
+    ) -> PermissionOutcome {
+        if let Some(rule) = Self::find_matching_rule(&self.deny_rules, tool_name, input) {
+            return PermissionOutcome::Deny {
+                reason: format!(
+                    "Permission to use {tool_name} has been denied by rule '{}'",
+                    rule.raw
+                ),
+            };
         }
 
-        let request = PermissionRequest {
-            tool_name: tool_name.to_string(),
-            input: input.to_string(),
-            current_mode,
-            required_mode,
-        };
+        let current_mode = self.active_mode();
+        let required_mode = self.required_mode_for(tool_name);
+        let ask_rule = Self::find_matching_rule(&self.ask_rules, tool_name, input);
+        let allow_rule = Self::find_matching_rule(&self.allow_rules, tool_name, input);
+
+        match context.override_decision() {
+            Some(PermissionOverride::Deny) => {
+                return PermissionOutcome::Deny {
+                    reason: context.override_reason().map_or_else(
+                        || format!("tool '{tool_name}' denied by hook"),
+                        ToOwned::to_owned,
+                    ),
+                };
+            }
+            Some(PermissionOverride::Ask) => {
+                let reason = context.override_reason().map_or_else(
+                    || format!("tool '{tool_name}' requires approval due to hook guidance"),
+                    ToOwned::to_owned,
+                );
+                return Self::prompt_or_deny(
+                    tool_name,
+                    input,
+                    current_mode,
+                    required_mode,
+                    Some(reason),
+                    prompter,
+                );
+            }
+            Some(PermissionOverride::Allow) => {
+                if let Some(rule) = ask_rule {
+                    let reason = format!(
+                        "tool '{tool_name}' requires approval due to ask rule '{}'",
+                        rule.raw
+                    );
+                    return Self::prompt_or_deny(
+                        tool_name,
+                        input,
+                        current_mode,
+                        required_mode,
+                        Some(reason),
+                        prompter,
+                    );
+                }
+                if allow_rule.is_some()
+                    || current_mode == PermissionMode::Allow
+                    || current_mode >= required_mode
+                {
+                    return PermissionOutcome::Allow;
+                }
+            }
+            None => {}
+        }
+
+        if let Some(rule) = ask_rule {
+            let reason = format!(
+                "tool '{tool_name}' requires approval due to ask rule '{}'",
+                rule.raw
+            );
+            return Self::prompt_or_deny(
+                tool_name,
+                input,
+                current_mode,
+                required_mode,
+                Some(reason),
+                prompter,
+            );
+        }
+
+        if allow_rule.is_some()
+            || current_mode == PermissionMode::Allow
+            || current_mode >= required_mode
+        {
+            return PermissionOutcome::Allow;
+        }
 
         if current_mode == PermissionMode::Prompt
             || (current_mode == PermissionMode::WorkspaceWrite
                 && required_mode == PermissionMode::DangerFullAccess)
         {
-            return match prompter.as_mut() {
-                Some(prompter) => match prompter.decide(&request) {
-                    PermissionPromptDecision::Allow => PermissionOutcome::Allow,
-                    PermissionPromptDecision::Deny { reason } => PermissionOutcome::Deny { reason },
-                },
-                None => PermissionOutcome::Deny {
-                    reason: format!(
-                        "tool '{tool_name}' requires approval to escalate from {} to {}",
-                        current_mode.as_str(),
-                        required_mode.as_str()
-                    ),
-                },
-            };
+            let reason = Some(format!(
+                "tool '{tool_name}' requires approval to escalate from {} to {}",
+                current_mode.as_str(),
+                required_mode.as_str()
+            ));
+            return Self::prompt_or_deny(
+                tool_name,
+                input,
+                current_mode,
+                required_mode,
+                reason,
+                prompter,
+            );
         }
 
         PermissionOutcome::Deny {
@@ -132,14 +282,191 @@ impl PermissionPolicy {
             ),
         }
     }
+
+    fn prompt_or_deny(
+        tool_name: &str,
+        input: &str,
+        current_mode: PermissionMode,
+        required_mode: PermissionMode,
+        reason: Option<String>,
+        mut prompter: Option<&mut dyn PermissionPrompter>,
+    ) -> PermissionOutcome {
+        let request = PermissionRequest {
+            tool_name: tool_name.to_string(),
+            input: input.to_string(),
+            current_mode,
+            required_mode,
+            reason: reason.clone(),
+        };
+
+        match prompter.as_mut() {
+            Some(prompter) => match prompter.decide(&request) {
+                PermissionPromptDecision::Allow => PermissionOutcome::Allow,
+                PermissionPromptDecision::Deny { reason } => PermissionOutcome::Deny { reason },
+            },
+            None => PermissionOutcome::Deny {
+                reason: reason.unwrap_or_else(|| {
+                    format!(
+                        "tool '{tool_name}' requires approval to run while mode is {}",
+                        current_mode.as_str()
+                    )
+                }),
+            },
+        }
+    }
+
+    fn find_matching_rule<'a>(
+        rules: &'a [PermissionRule],
+        tool_name: &str,
+        input: &str,
+    ) -> Option<&'a PermissionRule> {
+        rules.iter().find(|rule| rule.matches(tool_name, input))
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+struct PermissionRule {
+    raw: String,
+    tool_name: String,
+    matcher: PermissionRuleMatcher,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+enum PermissionRuleMatcher {
+    Any,
+    Exact(String),
+    Prefix(String),
+}
+
+impl PermissionRule {
+    fn parse(raw: &str) -> Self {
+        let trimmed = raw.trim();
+        let open = find_first_unescaped(trimmed, '(');
+        let close = find_last_unescaped(trimmed, ')');
+
+        if let (Some(open), Some(close)) = (open, close) {
+            if close == trimmed.len() - 1 && open < close {
+                let tool_name = trimmed[..open].trim();
+                let content = &trimmed[open + 1..close];
+                if !tool_name.is_empty() {
+                    let matcher = parse_rule_matcher(content);
+                    return Self {
+                        raw: trimmed.to_string(),
+                        tool_name: tool_name.to_string(),
+                        matcher,
+                    };
+                }
+            }
+        }
+
+        Self {
+            raw: trimmed.to_string(),
+            tool_name: trimmed.to_string(),
+            matcher: PermissionRuleMatcher::Any,
+        }
+    }
+
+    fn matches(&self, tool_name: &str, input: &str) -> bool {
+        if self.tool_name != tool_name {
+            return false;
+        }
+
+        match &self.matcher {
+            PermissionRuleMatcher::Any => true,
+            PermissionRuleMatcher::Exact(expected) => {
+                extract_permission_subject(input).is_some_and(|candidate| candidate == *expected)
+            }
+            PermissionRuleMatcher::Prefix(prefix) => extract_permission_subject(input)
+                .is_some_and(|candidate| candidate.starts_with(prefix)),
+        }
+    }
+}
+
+fn parse_rule_matcher(content: &str) -> PermissionRuleMatcher {
+    let unescaped = unescape_rule_content(content.trim());
+    if unescaped.is_empty() || unescaped == "*" {
+        PermissionRuleMatcher::Any
+    } else if let Some(prefix) = unescaped.strip_suffix(":*") {
+        PermissionRuleMatcher::Prefix(prefix.to_string())
+    } else {
+        PermissionRuleMatcher::Exact(unescaped)
+    }
+}
+
+fn unescape_rule_content(content: &str) -> String {
+    content
+        .replace(r"\(", "(")
+        .replace(r"\)", ")")
+        .replace(r"\\", r"\")
+}
+
+fn find_first_unescaped(value: &str, needle: char) -> Option<usize> {
+    let mut escaped = false;
+    for (idx, ch) in value.char_indices() {
+        if ch == '\\' {
+            escaped = !escaped;
+            continue;
+        }
+        if ch == needle && !escaped {
+            return Some(idx);
+        }
+        escaped = false;
+    }
+    None
+}
+
+fn find_last_unescaped(value: &str, needle: char) -> Option<usize> {
+    let chars = value.char_indices().collect::<Vec<_>>();
+    for (pos, (idx, ch)) in chars.iter().enumerate().rev() {
+        if *ch != needle {
+            continue;
+        }
+        let mut backslashes = 0;
+        for (_, prev) in chars[..pos].iter().rev() {
+            if *prev == '\\' {
+                backslashes += 1;
+            } else {
+                break;
+            }
+        }
+        if backslashes % 2 == 0 {
+            return Some(*idx);
+        }
+    }
+    None
+}
+
+fn extract_permission_subject(input: &str) -> Option<String> {
+    let parsed = serde_json::from_str::<Value>(input).ok();
+    if let Some(Value::Object(object)) = parsed {
+        for key in [
+            "command",
+            "path",
+            "file_path",
+            "filePath",
+            "notebook_path",
+            "notebookPath",
+            "url",
+            "pattern",
+            "code",
+            "message",
+        ] {
+            if let Some(value) = object.get(key).and_then(Value::as_str) {
+                return Some(value.to_string());
+            }
+        }
+    }
+
+    (!input.trim().is_empty()).then(|| input.to_string())
 }
 
 #[cfg(test)]
 mod tests {
     use super::{
-        PermissionMode, PermissionOutcome, PermissionPolicy, PermissionPromptDecision,
-        PermissionPrompter, PermissionRequest,
+        PermissionContext, PermissionMode, PermissionOutcome, PermissionOverride, PermissionPolicy,
+        PermissionPromptDecision, PermissionPrompter, PermissionRequest,
     };
+    use crate::config::RuntimePermissionRuleConfig;
 
     struct RecordingPrompter {
         seen: Vec<PermissionRequest>,
@@ -229,4 +556,120 @@ mod tests {
             PermissionOutcome::Deny { reason } if reason == "not now"
         ));
     }
+
+    #[test]
+    fn applies_rule_based_denials_and_allows() {
+        let rules = RuntimePermissionRuleConfig::new(
+            vec!["bash(git:*)".to_string()],
+            vec!["bash(rm -rf:*)".to_string()],
+            Vec::new(),
+        );
+        let policy = PermissionPolicy::new(PermissionMode::ReadOnly)
+            .with_tool_requirement("bash", PermissionMode::DangerFullAccess)
+            .with_permission_rules(&rules);
+
+        assert_eq!(
+            policy.authorize("bash", r#"{"command":"git status"}"#, None),
+            PermissionOutcome::Allow
+        );
+        assert!(matches!(
+            policy.authorize("bash", r#"{"command":"rm -rf /tmp/x"}"#, None),
+            PermissionOutcome::Deny { reason } if reason.contains("denied by rule")
+        ));
+    }
+
+    #[test]
+    fn ask_rules_force_prompt_even_when_mode_allows() {
+        let rules = RuntimePermissionRuleConfig::new(
+            Vec::new(),
+            Vec::new(),
+            vec!["bash(git:*)".to_string()],
+        );
+        let policy = PermissionPolicy::new(PermissionMode::DangerFullAccess)
+            .with_tool_requirement("bash", PermissionMode::DangerFullAccess)
+            .with_permission_rules(&rules);
+        let mut prompter = RecordingPrompter {
+            seen: Vec::new(),
+            allow: true,
+        };
+
+        let outcome = policy.authorize("bash", r#"{"command":"git status"}"#, Some(&mut prompter));
+
+        assert_eq!(outcome, PermissionOutcome::Allow);
+        assert_eq!(prompter.seen.len(), 1);
+        assert!(prompter.seen[0]
+            .reason
+            .as_deref()
+            .is_some_and(|reason| reason.contains("ask rule")));
+    }
+
+    #[test]
+    fn hook_allow_still_respects_ask_rules() {
+        let rules = RuntimePermissionRuleConfig::new(
+            Vec::new(),
+            Vec::new(),
+            vec!["bash(git:*)".to_string()],
+        );
+        let policy = PermissionPolicy::new(PermissionMode::ReadOnly)
+            .with_tool_requirement("bash", PermissionMode::DangerFullAccess)
+            .with_permission_rules(&rules);
+        let context = PermissionContext::new(
+            Some(PermissionOverride::Allow),
+            Some("hook approved".to_string()),
+        );
+        let mut prompter = RecordingPrompter {
+            seen: Vec::new(),
+            allow: true,
+        };
+
+        let outcome = policy.authorize_with_context(
+            "bash",
+            r#"{"command":"git status"}"#,
+            &context,
+            Some(&mut prompter),
+        );
+
+        assert_eq!(outcome, PermissionOutcome::Allow);
+        assert_eq!(prompter.seen.len(), 1);
+    }
+
+    #[test]
+    fn hook_deny_short_circuits_permission_flow() {
+        let policy = PermissionPolicy::new(PermissionMode::DangerFullAccess)
+            .with_tool_requirement("bash", PermissionMode::DangerFullAccess);
+        let context = PermissionContext::new(
+            Some(PermissionOverride::Deny),
+            Some("blocked by hook".to_string()),
+        );
+
+        assert_eq!(
+            policy.authorize_with_context("bash", "{}", &context, None),
+            PermissionOutcome::Deny {
+                reason: "blocked by hook".to_string(),
+            }
+        );
+    }
+
+    #[test]
+    fn hook_ask_forces_prompt() {
+        let policy = PermissionPolicy::new(PermissionMode::DangerFullAccess)
+            .with_tool_requirement("bash", PermissionMode::DangerFullAccess);
+        let context = PermissionContext::new(
+            Some(PermissionOverride::Ask),
+            Some("hook requested confirmation".to_string()),
+        );
+        let mut prompter = RecordingPrompter {
+            seen: Vec::new(),
+            allow: true,
+        };
+
+        let outcome = policy.authorize_with_context("bash", "{}", &context, Some(&mut prompter));
+
+        assert_eq!(outcome, PermissionOutcome::Allow);
+        assert_eq!(prompter.seen.len(), 1);
+        assert_eq!(
+            prompter.seen[0].reason.as_deref(),
+            Some("hook requested confirmation")
+        );
+    }
 }

rust/crates/rusty-claude-cli/Cargo.toml

@@ -19,7 +19,7 @@ rustyline = "15"
 runtime = { path = "../runtime" }
 serde_json = "1"
 syntect = "5"
-tokio = { version = "1", features = ["rt-multi-thread", "time"] }
+tokio = { version = "1", features = ["rt-multi-thread", "signal", "time"] }
 tools = { path = "../tools" }
 
 [lints]

rust/crates/rusty-claude-cli/src/main.rs

@@ -4,19 +4,19 @@ mod render;
 
 use std::collections::{BTreeMap, BTreeSet};
 use std::env;
-use std::fmt::Write as _;
 use std::fs;
 use std::io::{self, Read, Write};
 use std::net::TcpListener;
 use std::path::{Path, PathBuf};
 use std::process::Command;
+use std::sync::mpsc::{self, Receiver, Sender};
+use std::thread::{self, JoinHandle};
 use std::time::{SystemTime, UNIX_EPOCH};
 
 use api::{
     resolve_startup_auth_source, AnthropicClient, AuthSource, ContentBlockDelta, InputContentBlock,
-    InputMessage, JsonlTelemetrySink, MessageRequest, MessageResponse, OutputContentBlock,
-    SessionTracer, StreamEvent as ApiStreamEvent, ToolChoice, ToolDefinition,
-    ToolResultContentBlock,
+    InputMessage, MessageRequest, MessageResponse, OutputContentBlock,
+    StreamEvent as ApiStreamEvent, ToolChoice, ToolDefinition, ToolResultContentBlock,
 };
 
 use commands::{
@@ -46,7 +46,6 @@ fn max_tokens_for_model(model: &str) -> u32 {
 }
 const DEFAULT_DATE: &str = "2026-03-31";
 const DEFAULT_OAUTH_CALLBACK_PORT: u16 = 4545;
-const TELEMETRY_LOG_PATH_ENV: &str = "CLAW_TELEMETRY_LOG_PATH";
 const VERSION: &str = env!("CARGO_PKG_VERSION");
 const BUILD_TARGET: Option<&str> = option_env!("TARGET");
 const GIT_SHA: Option<&str> = option_env!("GIT_SHA");
@@ -987,6 +986,61 @@ struct LiveCli {
     session: SessionHandle,
 }
 
+struct HookAbortMonitor {
+    stop_tx: Option<Sender<()>>,
+    join_handle: Option<JoinHandle<()>>,
+}
+
+impl HookAbortMonitor {
+    fn spawn(abort_signal: runtime::HookAbortSignal) -> Self {
+        Self::spawn_with_waiter(abort_signal, move |stop_rx, abort_signal| {
+            let Ok(runtime) = tokio::runtime::Builder::new_current_thread()
+                .enable_all()
+                .build()
+            else {
+                return;
+            };
+
+            runtime.block_on(async move {
+                let wait_for_stop = tokio::task::spawn_blocking(move || {
+                    let _ = stop_rx.recv();
+                });
+
+                tokio::select! {
+                    result = tokio::signal::ctrl_c() => {
+                        if result.is_ok() {
+                            abort_signal.abort();
+                        }
+                    }
+                    _ = wait_for_stop => {}
+                }
+            });
+        })
+    }
+
+    fn spawn_with_waiter<F>(abort_signal: runtime::HookAbortSignal, wait_for_interrupt: F) -> Self
+    where
+        F: FnOnce(Receiver<()>, runtime::HookAbortSignal) + Send + 'static,
+    {
+        let (stop_tx, stop_rx) = mpsc::channel();
+        let join_handle = thread::spawn(move || wait_for_interrupt(stop_rx, abort_signal));
+
+        Self {
+            stop_tx: Some(stop_tx),
+            join_handle: Some(join_handle),
+        }
+    }
+
+    fn stop(mut self) {
+        if let Some(stop_tx) = self.stop_tx.take() {
+            let _ = stop_tx.send(());
+        }
+        if let Some(join_handle) = self.join_handle.take() {
+            let _ = join_handle.join();
+        }
+    }
+}
+
 impl LiveCli {
     fn new(
         model: String,
@@ -998,7 +1052,6 @@ impl LiveCli {
         let session = create_managed_session_handle()?;
         let runtime = build_runtime(
             Session::new(),
-            &session.id,
             model.clone(),
             system_prompt.clone(),
             enable_tools,
@@ -1043,7 +1096,34 @@ impl LiveCli {
         )
     }
 
+    fn prepare_turn_runtime(
+        &self,
+        emit_output: bool,
+    ) -> Result<
+        (
+            ConversationRuntime<AnthropicRuntimeClient, CliToolExecutor>,
+            HookAbortMonitor,
+        ),
+        Box<dyn std::error::Error>,
+    > {
+        let hook_abort_signal = runtime::HookAbortSignal::new();
+        let runtime = build_runtime(
+            self.runtime.session().clone(),
+            self.model.clone(),
+            self.system_prompt.clone(),
+            true,
+            emit_output,
+            self.allowed_tools.clone(),
+            self.permission_mode,
+        )?
+        .with_hook_abort_signal(hook_abort_signal.clone());
+        let hook_abort_monitor = HookAbortMonitor::spawn(hook_abort_signal);
+
+        Ok((runtime, hook_abort_monitor))
+    }
+
     fn run_turn(&mut self, input: &str) -> Result<(), Box<dyn std::error::Error>> {
+        let (mut runtime, hook_abort_monitor) = self.prepare_turn_runtime(true)?;
         let mut spinner = Spinner::new();
         let mut stdout = io::stdout();
         spinner.tick(
@@ -1052,7 +1132,9 @@ impl LiveCli {
             &mut stdout,
         )?;
         let mut permission_prompter = CliPermissionPrompter::new(self.permission_mode);
-        let result = self.runtime.run_turn(input, Some(&mut permission_prompter));
+        let result = runtime.run_turn(input, Some(&mut permission_prompter));
+        hook_abort_monitor.stop();
+        self.runtime = runtime;
         match result {
             Ok(_) => {
                 spinner.finish(
@@ -1087,19 +1169,11 @@ impl LiveCli {
     }
 
     fn run_prompt_json(&mut self, input: &str) -> Result<(), Box<dyn std::error::Error>> {
-        let session = self.runtime.session().clone();
-        let mut runtime = build_runtime(
-            session,
-            &self.session.id,
-            self.model.clone(),
-            self.system_prompt.clone(),
-            true,
-            false,
-            self.allowed_tools.clone(),
-            self.permission_mode,
-        )?;
+        let (mut runtime, hook_abort_monitor) = self.prepare_turn_runtime(false)?;
         let mut permission_prompter = CliPermissionPrompter::new(self.permission_mode);
-        let summary = runtime.run_turn(input, Some(&mut permission_prompter))?;
+        let result = runtime.run_turn(input, Some(&mut permission_prompter));
+        hook_abort_monitor.stop();
+        let summary = result?;
         self.runtime = runtime;
         self.persist_session()?;
         println!(
@@ -1237,7 +1311,6 @@ impl LiveCli {
         let message_count = session.messages.len();
         self.runtime = build_runtime(
             session,
-            &self.session.id,
             model.clone(),
             self.system_prompt.clone(),
             true,
@@ -1281,7 +1354,6 @@ impl LiveCli {
         self.permission_mode = permission_mode_from_label(normalized);
         self.runtime = build_runtime(
             session,
-            &self.session.id,
             self.model.clone(),
             self.system_prompt.clone(),
             true,
@@ -1307,7 +1379,6 @@ impl LiveCli {
         self.session = create_managed_session_handle()?;
         self.runtime = build_runtime(
             Session::new(),
-            &self.session.id,
             self.model.clone(),
             self.system_prompt.clone(),
             true,
@@ -1343,7 +1414,6 @@ impl LiveCli {
         let message_count = session.messages.len();
         self.runtime = build_runtime(
             session,
-            &handle.id,
             self.model.clone(),
             self.system_prompt.clone(),
             true,
@@ -1416,7 +1486,6 @@ impl LiveCli {
                 let message_count = session.messages.len();
                 self.runtime = build_runtime(
                     session,
-                    &handle.id,
                     self.model.clone(),
                     self.system_prompt.clone(),
                     true,
@@ -1447,7 +1516,6 @@ impl LiveCli {
         let skipped = removed == 0;
         self.runtime = build_runtime(
             result.compacted_session,
-            &self.session.id,
             self.model.clone(),
             self.system_prompt.clone(),
             true,
@@ -1923,10 +1991,8 @@ fn build_runtime_feature_config(
         .clone())
 }
 
-#[allow(clippy::too_many_arguments)]
 fn build_runtime(
     session: Session,
-    session_id: &str,
     model: String,
     system_prompt: Vec<String>,
     enable_tools: bool,
@@ -1935,41 +2001,52 @@ fn build_runtime(
     permission_mode: PermissionMode,
 ) -> Result<ConversationRuntime<AnthropicRuntimeClient, CliToolExecutor>, Box<dyn std::error::Error>>
 {
-    let session_tracer = build_session_tracer(session_id)?;
-    let api_client = match session_tracer.clone() {
-        Some(session_tracer) => {
-            AnthropicRuntimeClient::new(model, enable_tools, emit_output, allowed_tools.clone())?
-                .with_session_tracer(session_tracer)
-        }
-        None => {
-            AnthropicRuntimeClient::new(model, enable_tools, emit_output, allowed_tools.clone())?
-        }
-    };
-    let runtime = ConversationRuntime::new_with_features(
+    let feature_config = build_runtime_feature_config()?;
+    let mut runtime = ConversationRuntime::new_with_features(
         session,
-        api_client,
+        AnthropicRuntimeClient::new(model, enable_tools, emit_output, allowed_tools.clone())?,
         CliToolExecutor::new(allowed_tools, emit_output),
-        permission_policy(permission_mode),
+        permission_policy(permission_mode, &feature_config),
         system_prompt,
-        &build_runtime_feature_config()?,
+        feature_config,
     );
-    Ok(match session_tracer {
-        Some(session_tracer) => runtime.with_session_tracer(session_tracer),
-        None => runtime,
-    })
+    if emit_output {
+        runtime = runtime.with_hook_progress_reporter(Box::new(CliHookProgressReporter));
+    }
+    Ok(runtime)
 }
 
-fn build_session_tracer(
-    session_id: &str,
-) -> Result<Option<SessionTracer>, Box<dyn std::error::Error>> {
-    let Some(path) = env::var_os(TELEMETRY_LOG_PATH_ENV) else {
-        return Ok(None);
-    };
-    let sink = JsonlTelemetrySink::new(PathBuf::from(path))?;
-    Ok(Some(SessionTracer::new(
-        session_id.to_string(),
-        std::sync::Arc::new(sink),
-    )))
+struct CliHookProgressReporter;
+
+impl runtime::HookProgressReporter for CliHookProgressReporter {
+    fn on_event(&mut self, event: &runtime::HookProgressEvent) {
+        match event {
+            runtime::HookProgressEvent::Started {
+                event,
+                tool_name,
+                command,
+            } => eprintln!(
+                "[hook {event_name}] {tool_name}: {command}",
+                event_name = event.as_str()
+            ),
+            runtime::HookProgressEvent::Completed {
+                event,
+                tool_name,
+                command,
+            } => eprintln!(
+                "[hook done {event_name}] {tool_name}: {command}",
+                event_name = event.as_str()
+            ),
+            runtime::HookProgressEvent::Cancelled {
+                event,
+                tool_name,
+                command,
+            } => eprintln!(
+                "[hook cancelled {event_name}] {tool_name}: {command}",
+                event_name = event.as_str()
+            ),
+        }
+    }
 }
 
 struct CliPermissionPrompter {
@@ -1992,6 +2069,9 @@ impl runtime::PermissionPrompter for CliPermissionPrompter {
         println!("  Tool             {}", request.tool_name);
         println!("  Current mode     {}", self.current_mode.as_str());
         println!("  Required mode    {}", request.required_mode.as_str());
+        if let Some(reason) = &request.reason {
+            println!("  Reason           {reason}");
+        }
         println!("  Input            {}", request.input);
         print!("Approve this tool call? [y/N]: ");
         let _ = io::stdout().flush();
@@ -2044,11 +2124,6 @@ impl AnthropicRuntimeClient {
             allowed_tools,
         })
     }
-
-    fn with_session_tracer(mut self, session_tracer: SessionTracer) -> Self {
-        self.client = self.client.with_session_tracer(session_tracer);
-        self
-    }
 }
 
 fn resolve_cli_auth_source() -> Result<AuthSource, Box<dyn std::error::Error>> {
@@ -2154,7 +2229,12 @@ impl ApiClient for AnthropicRuntimeClient {
                         }
                     }
                     ApiStreamEvent::MessageDelta(delta) => {
-                        events.push(AssistantEvent::Usage(delta.usage.token_usage()));
+                        events.push(AssistantEvent::Usage(TokenUsage {
+                            input_tokens: delta.usage.input_tokens,
+                            output_tokens: delta.usage.output_tokens,
+                            cache_creation_input_tokens: 0,
+                            cache_read_input_tokens: 0,
+                        }));
                     }
                     ApiStreamEvent::MessageStop(_) => {
                         saw_stop = true;
@@ -2404,13 +2484,15 @@ fn format_bash_result(icon: &str, parsed: &serde_json::Value) -> String {
         .get("backgroundTaskId")
         .and_then(|value| value.as_str())
     {
-        write!(&mut lines[0], " backgrounded ({task_id})").expect("write to string");
+        use std::fmt::Write as _;
+        let _ = write!(lines[0], " backgrounded ({task_id})");
     } else if let Some(status) = parsed
         .get("returnCodeInterpretation")
         .and_then(|value| value.as_str())
         .filter(|status| !status.is_empty())
     {
-        write!(&mut lines[0], " {status}").expect("write to string");
+        use std::fmt::Write as _;
+        let _ = write!(lines[0], " {status}");
     }
 
     if let Some(stdout) = parsed.get("stdout").and_then(|value| value.as_str()) {
@@ -2650,7 +2732,12 @@ fn response_to_events(
         }
     }
 
-    events.push(AssistantEvent::Usage(response.usage.token_usage()));
+    events.push(AssistantEvent::Usage(TokenUsage {
+        input_tokens: response.usage.input_tokens,
+        output_tokens: response.usage.output_tokens,
+        cache_creation_input_tokens: response.usage.cache_creation_input_tokens,
+        cache_read_input_tokens: response.usage.cache_read_input_tokens,
+    }));
     events.push(AssistantEvent::MessageStop);
     Ok(events)
 }
@@ -2707,12 +2794,14 @@ impl ToolExecutor for CliToolExecutor {
     }
 }
 
-fn permission_policy(mode: PermissionMode) -> PermissionPolicy {
-    tool_permission_specs()
-        .into_iter()
-        .fold(PermissionPolicy::new(mode), |policy, spec| {
-            policy.with_tool_requirement(spec.name, spec.required_permission)
-        })
+fn permission_policy(
+    mode: PermissionMode,
+    feature_config: &runtime::RuntimeFeatureConfig,
+) -> PermissionPolicy {
+    tool_permission_specs().into_iter().fold(
+        PermissionPolicy::new(mode).with_permission_rules(feature_config.permission_rules()),
+        |policy, spec| policy.with_tool_requirement(spec.name, spec.required_permission),
+    )
 }
 
 fn tool_permission_specs() -> Vec<ToolSpec> {
@@ -2861,12 +2950,17 @@ mod tests {
         normalize_permission_mode, parse_args, parse_git_status_metadata, print_help_to,
         push_output_block, render_config_report, render_memory_report, render_repl_help,
         resolve_model_alias, response_to_events, resume_supported_slash_commands, status_context,
-        CliAction, CliOutputFormat, SlashCommand, StatusUsage, DEFAULT_MODEL,
+        CliAction, CliOutputFormat, HookAbortMonitor, SlashCommand, StatusUsage, DEFAULT_MODEL,
     };
     use api::{MessageResponse, OutputContentBlock, Usage};
-    use runtime::{AssistantEvent, ContentBlock, ConversationMessage, MessageRole, PermissionMode};
+    use runtime::{
+        AssistantEvent, ContentBlock, ConversationMessage, HookAbortSignal, MessageRole,
+        PermissionMode,
+    };
     use serde_json::json;
     use std::path::PathBuf;
+    use std::sync::mpsc;
+    use std::time::Duration;
 
     #[test]
     fn defaults_to_repl_when_no_args() {
@@ -3525,4 +3619,43 @@ mod tests {
                 if name == "read_file" && input == "{\"path\":\"rust/Cargo.toml\"}"
         ));
     }
+
+    #[test]
+    fn hook_abort_monitor_stops_without_aborting() {
+        let abort_signal = HookAbortSignal::new();
+        let (ready_tx, ready_rx) = mpsc::channel();
+        let monitor = HookAbortMonitor::spawn_with_waiter(
+            abort_signal.clone(),
+            move |stop_rx, abort_signal| {
+                ready_tx.send(()).expect("ready signal");
+                let _ = stop_rx.recv();
+                assert!(!abort_signal.is_aborted());
+            },
+        );
+
+        ready_rx.recv().expect("waiter should be ready");
+        monitor.stop();
+
+        assert!(!abort_signal.is_aborted());
+    }
+
+    #[test]
+    fn hook_abort_monitor_propagates_interrupt() {
+        let abort_signal = HookAbortSignal::new();
+        let (done_tx, done_rx) = mpsc::channel();
+        let monitor = HookAbortMonitor::spawn_with_waiter(
+            abort_signal.clone(),
+            move |_stop_rx, abort_signal| {
+                abort_signal.abort();
+                done_tx.send(()).expect("done signal");
+            },
+        );
+
+        done_rx
+            .recv_timeout(Duration::from_secs(1))
+            .expect("interrupt should complete");
+        monitor.stop();
+
+        assert!(abort_signal.is_aborted());
+    }
 }

rust/crates/telemetry/Cargo.toml

@@ -1,13 +0,0 @@
-[package]
-name = "telemetry"
-version.workspace = true
-edition.workspace = true
-license.workspace = true
-publish.workspace = true
-
-[dependencies]
-serde = { version = "1", features = ["derive"] }
-serde_json = "1"
-
-[lints]
-workspace = true

rust/crates/telemetry/src/lib.rs

@@ -1,526 +0,0 @@
-use std::fmt::{Debug, Formatter};
-use std::fs::{File, OpenOptions};
-use std::io::Write;
-use std::path::{Path, PathBuf};
-use std::sync::atomic::{AtomicU64, Ordering};
-use std::sync::{Arc, Mutex};
-use std::time::{SystemTime, UNIX_EPOCH};
-
-use serde::{Deserialize, Serialize};
-use serde_json::{Map, Value};
-
-pub const DEFAULT_ANTHROPIC_VERSION: &str = "2023-06-01";
-pub const DEFAULT_APP_NAME: &str = "claude-code";
-pub const DEFAULT_RUNTIME: &str = "rust";
-pub const DEFAULT_AGENTIC_BETA: &str = "claude-code-20250219";
-pub const DEFAULT_PROMPT_CACHING_SCOPE_BETA: &str = "prompt-caching-scope-2026-01-05";
-
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
-pub struct ClientIdentity {
-    pub app_name: String,
-    pub app_version: String,
-    pub runtime: String,
-}
-
-impl ClientIdentity {
-    #[must_use]
-    pub fn new(app_name: impl Into<String>, app_version: impl Into<String>) -> Self {
-        Self {
-            app_name: app_name.into(),
-            app_version: app_version.into(),
-            runtime: DEFAULT_RUNTIME.to_string(),
-        }
-    }
-
-    #[must_use]
-    pub fn with_runtime(mut self, runtime: impl Into<String>) -> Self {
-        self.runtime = runtime.into();
-        self
-    }
-
-    #[must_use]
-    pub fn user_agent(&self) -> String {
-        format!("{}/{}", self.app_name, self.app_version)
-    }
-}
-
-impl Default for ClientIdentity {
-    fn default() -> Self {
-        Self::new(DEFAULT_APP_NAME, env!("CARGO_PKG_VERSION"))
-    }
-}
-
-#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
-pub struct AnthropicRequestProfile {
-    pub anthropic_version: String,
-    pub client_identity: ClientIdentity,
-    #[serde(default, skip_serializing_if = "Vec::is_empty")]
-    pub betas: Vec<String>,
-    #[serde(default, skip_serializing_if = "Map::is_empty")]
-    pub extra_body: Map<String, Value>,
-}
-
-impl AnthropicRequestProfile {
-    #[must_use]
-    pub fn new(client_identity: ClientIdentity) -> Self {
-        Self {
-            anthropic_version: DEFAULT_ANTHROPIC_VERSION.to_string(),
-            client_identity,
-            betas: vec![
-                DEFAULT_AGENTIC_BETA.to_string(),
-                DEFAULT_PROMPT_CACHING_SCOPE_BETA.to_string(),
-            ],
-            extra_body: Map::new(),
-        }
-    }
-
-    #[must_use]
-    pub fn with_beta(mut self, beta: impl Into<String>) -> Self {
-        let beta = beta.into();
-        if !self.betas.contains(&beta) {
-            self.betas.push(beta);
-        }
-        self
-    }
-
-    #[must_use]
-    pub fn with_extra_body(mut self, key: impl Into<String>, value: Value) -> Self {
-        self.extra_body.insert(key.into(), value);
-        self
-    }
-
-    #[must_use]
-    pub fn header_pairs(&self) -> Vec<(String, String)> {
-        let mut headers = vec![
-            (
-                "anthropic-version".to_string(),
-                self.anthropic_version.clone(),
-            ),
-            ("user-agent".to_string(), self.client_identity.user_agent()),
-        ];
-        if !self.betas.is_empty() {
-            headers.push(("anthropic-beta".to_string(), self.betas.join(",")));
-        }
-        headers
-    }
-
-    pub fn render_json_body<T: Serialize>(&self, request: &T) -> Result<Value, serde_json::Error> {
-        let mut body = serde_json::to_value(request)?;
-        let object = body.as_object_mut().ok_or_else(|| {
-            serde_json::Error::io(std::io::Error::new(
-                std::io::ErrorKind::InvalidData,
-                "request body must serialize to a JSON object",
-            ))
-        })?;
-        for (key, value) in &self.extra_body {
-            object.insert(key.clone(), value.clone());
-        }
-        if !self.betas.is_empty() {
-            object.insert(
-                "betas".to_string(),
-                Value::Array(self.betas.iter().cloned().map(Value::String).collect()),
-            );
-        }
-        Ok(body)
-    }
-}
-
-impl Default for AnthropicRequestProfile {
-    fn default() -> Self {
-        Self::new(ClientIdentity::default())
-    }
-}
-
-#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
-pub struct AnalyticsEvent {
-    pub namespace: String,
-    pub action: String,
-    #[serde(default, skip_serializing_if = "Map::is_empty")]
-    pub properties: Map<String, Value>,
-}
-
-impl AnalyticsEvent {
-    #[must_use]
-    pub fn new(namespace: impl Into<String>, action: impl Into<String>) -> Self {
-        Self {
-            namespace: namespace.into(),
-            action: action.into(),
-            properties: Map::new(),
-        }
-    }
-
-    #[must_use]
-    pub fn with_property(mut self, key: impl Into<String>, value: Value) -> Self {
-        self.properties.insert(key.into(), value);
-        self
-    }
-}
-
-#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
-pub struct SessionTraceRecord {
-    pub session_id: String,
-    pub sequence: u64,
-    pub name: String,
-    pub timestamp_ms: u64,
-    #[serde(default, skip_serializing_if = "Map::is_empty")]
-    pub attributes: Map<String, Value>,
-}
-
-#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
-#[serde(tag = "type", rename_all = "snake_case")]
-pub enum TelemetryEvent {
-    HttpRequestStarted {
-        session_id: String,
-        attempt: u32,
-        method: String,
-        path: String,
-        #[serde(default, skip_serializing_if = "Map::is_empty")]
-        attributes: Map<String, Value>,
-    },
-    HttpRequestSucceeded {
-        session_id: String,
-        attempt: u32,
-        method: String,
-        path: String,
-        status: u16,
-        #[serde(default, skip_serializing_if = "Option::is_none")]
-        request_id: Option<String>,
-        #[serde(default, skip_serializing_if = "Map::is_empty")]
-        attributes: Map<String, Value>,
-    },
-    HttpRequestFailed {
-        session_id: String,
-        attempt: u32,
-        method: String,
-        path: String,
-        error: String,
-        retryable: bool,
-        #[serde(default, skip_serializing_if = "Map::is_empty")]
-        attributes: Map<String, Value>,
-    },
-    Analytics(AnalyticsEvent),
-    SessionTrace(SessionTraceRecord),
-}
-
-pub trait TelemetrySink: Send + Sync {
-    fn record(&self, event: TelemetryEvent);
-}
-
-#[derive(Default)]
-pub struct MemoryTelemetrySink {
-    events: Mutex<Vec<TelemetryEvent>>,
-}
-
-impl MemoryTelemetrySink {
-    #[must_use]
-    pub fn events(&self) -> Vec<TelemetryEvent> {
-        self.events
-            .lock()
-            .unwrap_or_else(std::sync::PoisonError::into_inner)
-            .clone()
-    }
-}
-
-impl TelemetrySink for MemoryTelemetrySink {
-    fn record(&self, event: TelemetryEvent) {
-        self.events
-            .lock()
-            .unwrap_or_else(std::sync::PoisonError::into_inner)
-            .push(event);
-    }
-}
-
-pub struct JsonlTelemetrySink {
-    path: PathBuf,
-    file: Mutex<File>,
-}
-
-impl Debug for JsonlTelemetrySink {
-    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-        f.debug_struct("JsonlTelemetrySink")
-            .field("path", &self.path)
-            .finish_non_exhaustive()
-    }
-}
-
-impl JsonlTelemetrySink {
-    pub fn new(path: impl AsRef<Path>) -> Result<Self, std::io::Error> {
-        let path = path.as_ref().to_path_buf();
-        if let Some(parent) = path.parent() {
-            std::fs::create_dir_all(parent)?;
-        }
-        let file = OpenOptions::new().create(true).append(true).open(&path)?;
-        Ok(Self {
-            path,
-            file: Mutex::new(file),
-        })
-    }
-
-    #[must_use]
-    pub fn path(&self) -> &Path {
-        &self.path
-    }
-}
-
-impl TelemetrySink for JsonlTelemetrySink {
-    fn record(&self, event: TelemetryEvent) {
-        let Ok(line) = serde_json::to_string(&event) else {
-            return;
-        };
-        let mut file = self
-            .file
-            .lock()
-            .unwrap_or_else(std::sync::PoisonError::into_inner);
-        let _ = writeln!(file, "{line}");
-        let _ = file.flush();
-    }
-}
-
-#[derive(Clone)]
-pub struct SessionTracer {
-    session_id: String,
-    sequence: Arc<AtomicU64>,
-    sink: Arc<dyn TelemetrySink>,
-}
-
-impl Debug for SessionTracer {
-    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-        f.debug_struct("SessionTracer")
-            .field("session_id", &self.session_id)
-            .finish_non_exhaustive()
-    }
-}
-
-impl SessionTracer {
-    #[must_use]
-    pub fn new(session_id: impl Into<String>, sink: Arc<dyn TelemetrySink>) -> Self {
-        Self {
-            session_id: session_id.into(),
-            sequence: Arc::new(AtomicU64::new(0)),
-            sink,
-        }
-    }
-
-    #[must_use]
-    pub fn session_id(&self) -> &str {
-        &self.session_id
-    }
-
-    pub fn record(&self, name: impl Into<String>, attributes: Map<String, Value>) {
-        let record = SessionTraceRecord {
-            session_id: self.session_id.clone(),
-            sequence: self.sequence.fetch_add(1, Ordering::Relaxed),
-            name: name.into(),
-            timestamp_ms: current_timestamp_ms(),
-            attributes,
-        };
-        self.sink.record(TelemetryEvent::SessionTrace(record));
-    }
-
-    pub fn record_http_request_started(
-        &self,
-        attempt: u32,
-        method: impl Into<String>,
-        path: impl Into<String>,
-        attributes: Map<String, Value>,
-    ) {
-        let method = method.into();
-        let path = path.into();
-        self.sink.record(TelemetryEvent::HttpRequestStarted {
-            session_id: self.session_id.clone(),
-            attempt,
-            method: method.clone(),
-            path: path.clone(),
-            attributes: attributes.clone(),
-        });
-        self.record(
-            "http_request_started",
-            merge_trace_fields(method, path, attempt, attributes),
-        );
-    }
-
-    pub fn record_http_request_succeeded(
-        &self,
-        attempt: u32,
-        method: impl Into<String>,
-        path: impl Into<String>,
-        status: u16,
-        request_id: Option<String>,
-        attributes: Map<String, Value>,
-    ) {
-        let method = method.into();
-        let path = path.into();
-        self.sink.record(TelemetryEvent::HttpRequestSucceeded {
-            session_id: self.session_id.clone(),
-            attempt,
-            method: method.clone(),
-            path: path.clone(),
-            status,
-            request_id: request_id.clone(),
-            attributes: attributes.clone(),
-        });
-        let mut trace_attributes = merge_trace_fields(method, path, attempt, attributes);
-        trace_attributes.insert("status".to_string(), Value::from(status));
-        if let Some(request_id) = request_id {
-            trace_attributes.insert("request_id".to_string(), Value::String(request_id));
-        }
-        self.record("http_request_succeeded", trace_attributes);
-    }
-
-    pub fn record_http_request_failed(
-        &self,
-        attempt: u32,
-        method: impl Into<String>,
-        path: impl Into<String>,
-        error: impl Into<String>,
-        retryable: bool,
-        attributes: Map<String, Value>,
-    ) {
-        let method = method.into();
-        let path = path.into();
-        let error = error.into();
-        self.sink.record(TelemetryEvent::HttpRequestFailed {
-            session_id: self.session_id.clone(),
-            attempt,
-            method: method.clone(),
-            path: path.clone(),
-            error: error.clone(),
-            retryable,
-            attributes: attributes.clone(),
-        });
-        let mut trace_attributes = merge_trace_fields(method, path, attempt, attributes);
-        trace_attributes.insert("error".to_string(), Value::String(error));
-        trace_attributes.insert("retryable".to_string(), Value::Bool(retryable));
-        self.record("http_request_failed", trace_attributes);
-    }
-
-    pub fn record_analytics(&self, event: AnalyticsEvent) {
-        let mut attributes = event.properties.clone();
-        attributes.insert(
-            "namespace".to_string(),
-            Value::String(event.namespace.clone()),
-        );
-        attributes.insert("action".to_string(), Value::String(event.action.clone()));
-        self.sink.record(TelemetryEvent::Analytics(event));
-        self.record("analytics", attributes);
-    }
-}
-
-fn merge_trace_fields(
-    method: String,
-    path: String,
-    attempt: u32,
-    mut attributes: Map<String, Value>,
-) -> Map<String, Value> {
-    attributes.insert("method".to_string(), Value::String(method));
-    attributes.insert("path".to_string(), Value::String(path));
-    attributes.insert("attempt".to_string(), Value::from(attempt));
-    attributes
-}
-
-fn current_timestamp_ms() -> u64 {
-    SystemTime::now()
-        .duration_since(UNIX_EPOCH)
-        .unwrap_or_default()
-        .as_millis()
-        .try_into()
-        .unwrap_or(u64::MAX)
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn request_profile_emits_headers_and_merges_body() {
-        let profile = AnthropicRequestProfile::new(
-            ClientIdentity::new("claude-code", "1.2.3").with_runtime("rust-cli"),
-        )
-        .with_beta("tools-2026-04-01")
-        .with_extra_body("metadata", serde_json::json!({"source": "test"}));
-
-        assert_eq!(
-            profile.header_pairs(),
-            vec![
-                (
-                    "anthropic-version".to_string(),
-                    DEFAULT_ANTHROPIC_VERSION.to_string()
-                ),
-                ("user-agent".to_string(), "claude-code/1.2.3".to_string()),
-                (
-                    "anthropic-beta".to_string(),
-                    "claude-code-20250219,prompt-caching-scope-2026-01-05,tools-2026-04-01"
-                        .to_string(),
-                ),
-            ]
-        );
-
-        let body = profile
-            .render_json_body(&serde_json::json!({"model": "claude-sonnet"}))
-            .expect("body should serialize");
-        assert_eq!(
-            body["metadata"]["source"],
-            Value::String("test".to_string())
-        );
-        assert_eq!(
-            body["betas"],
-            serde_json::json!([
-                "claude-code-20250219",
-                "prompt-caching-scope-2026-01-05",
-                "tools-2026-04-01"
-            ])
-        );
-    }
-
-    #[test]
-    fn session_tracer_records_structured_events_and_trace_sequence() {
-        let sink = Arc::new(MemoryTelemetrySink::default());
-        let tracer = SessionTracer::new("session-123", sink.clone());
-
-        tracer.record_http_request_started(1, "POST", "/v1/messages", Map::new());
-        tracer.record_analytics(
-            AnalyticsEvent::new("cli", "prompt_sent")
-                .with_property("model", Value::String("claude-opus".to_string())),
-        );
-
-        let events = sink.events();
-        assert!(matches!(
-            &events[0],
-            TelemetryEvent::HttpRequestStarted {
-                session_id,
-                attempt: 1,
-                method,
-                path,
-                ..
-            } if session_id == "session-123" && method == "POST" && path == "/v1/messages"
-        ));
-        assert!(matches!(
-            &events[1],
-            TelemetryEvent::SessionTrace(SessionTraceRecord { sequence: 0, name, .. })
-            if name == "http_request_started"
-        ));
-        assert!(matches!(&events[2], TelemetryEvent::Analytics(_)));
-        assert!(matches!(
-            &events[3],
-            TelemetryEvent::SessionTrace(SessionTraceRecord { sequence: 1, name, .. })
-            if name == "analytics"
-        ));
-    }
-
-    #[test]
-    fn jsonl_sink_persists_events() {
-        let path =
-            std::env::temp_dir().join(format!("telemetry-jsonl-{}.log", current_timestamp_ms()));
-        let sink = JsonlTelemetrySink::new(&path).expect("sink should create file");
-
-        sink.record(TelemetryEvent::Analytics(
-            AnalyticsEvent::new("cli", "turn_completed").with_property("ok", Value::Bool(true)),
-        ));
-
-        let contents = std::fs::read_to_string(&path).expect("telemetry log should be readable");
-        assert!(contents.contains("\"type\":\"analytics\""));
-        assert!(contents.contains("\"action\":\"turn_completed\""));
-
-        let _ = std::fs::remove_file(path);
-    }
-}

rust/crates/tools/src/lib.rs

@@ -13,7 +13,7 @@ use runtime::{
     edit_file, execute_bash, glob_search, grep_search, load_system_prompt, read_file, write_file,
     ApiClient, ApiRequest, AssistantEvent, BashCommandInput, ContentBlock, ConversationMessage,
     ConversationRuntime, GrepSearchInput, MessageRole, PermissionMode, PermissionPolicy,
-    RuntimeError, Session, ToolError, ToolExecutor,
+    RuntimeError, Session, TokenUsage, ToolError, ToolExecutor,
 };
 use serde::{Deserialize, Serialize};
 use serde_json::{json, Value};
@@ -1723,7 +1723,12 @@ impl ApiClient for AnthropicRuntimeClient {
                         }
                     }
                     ApiStreamEvent::MessageDelta(delta) => {
-                        events.push(AssistantEvent::Usage(delta.usage.token_usage()));
+                        events.push(AssistantEvent::Usage(TokenUsage {
+                            input_tokens: delta.usage.input_tokens,
+                            output_tokens: delta.usage.output_tokens,
+                            cache_creation_input_tokens: 0,
+                            cache_read_input_tokens: 0,
+                        }));
                     }
                     ApiStreamEvent::MessageStop(_) => {
                         saw_stop = true;
@@ -1869,7 +1874,12 @@ fn response_to_events(response: MessageResponse) -> Vec<AssistantEvent> {
         }
     }
 
-    events.push(AssistantEvent::Usage(response.usage.token_usage()));
+    events.push(AssistantEvent::Usage(TokenUsage {
+        input_tokens: response.usage.input_tokens,
+        output_tokens: response.usage.output_tokens,
+        cache_creation_input_tokens: response.usage.cache_creation_input_tokens,
+        cache_read_input_tokens: response.usage.cache_read_input_tokens,
+    }));
     events.push(AssistantEvent::MessageStop);
     events
 }