diff --git a/codex-rs/Cargo.lock b/codex-rs/Cargo.lock
index 643cfffcff..453885b614 100644
--- a/codex-rs/Cargo.lock
+++ b/codex-rs/Cargo.lock
@@ -938,7 +938,9 @@ dependencies = [
  "opentelemetry-semantic-conventions",
  "opentelemetry_sdk",
  "reqwest",
+ "serde",
  "serde_json",
+ "strum_macros 0.27.2",
  "tempfile",
  "time",
  "tokio",
diff --git a/codex-rs/core/src/codex.rs b/codex-rs/core/src/codex.rs
index 534bb0e126..6135bf9f61 100644
--- a/codex-rs/core/src/codex.rs
+++ b/codex-rs/core/src/codex.rs
@@ -122,7 +122,7 @@ use crate::unified_exec::UnifiedExecSessionManager;
 use crate::user_instructions::UserInstructions;
 use crate::user_notification::UserNotification;
 use crate::util::backoff;
-use codex_otel::trace_manager::TraceManager;
+use codex_otel::trace_manager::{ToolDecisionOutcome, ToolDecisionSource, TraceManager};
 use codex_protocol::config_types::ReasoningEffort as ReasoningEffortConfig;
 use codex_protocol::config_types::ReasoningSummary as ReasoningSummaryConfig;
 use codex_protocol::custom_prompts::CustomPrompt;
@@ -2303,6 +2303,7 @@ async fn handle_response_item(
                     sess,
                     turn_context,
                     turn_diff_tracker,
+                    "local_shell",
                     sub_id.to_string(),
                     effective_call_id,
                 )
@@ -2449,6 +2450,7 @@ async fn handle_function_call(
                 sess,
                 turn_context,
                 turn_diff_tracker,
+                name.as_str(),
                 sub_id,
                 call_id,
             )
@@ -2545,6 +2547,7 @@ async fn handle_function_call(
                 sess,
                 turn_context,
                 turn_diff_tracker,
+                "apply_patch",
                 sub_id,
                 call_id,
             )
@@ -2649,6 +2652,7 @@ async fn handle_custom_tool_call(
                 sess,
                 turn_context,
                 turn_diff_tracker,
+                "apply_patch",
                 sub_id,
                 call_id,
             )
@@ -2741,9 +2745,13 @@ async fn handle_container_exec_with_params(
     sess: &Session,
     turn_context: &TurnContext,
     turn_diff_tracker: &mut TurnDiffTracker,
+    tool_name: &str,
     sub_id: String,
     call_id: String,
 ) -> ResponseInputItem {
+    let trace_manager = turn_context.client.get_trace_manager();
+    let mut auto_approved_via_user = false;
+
     if params.with_escalated_permissions.unwrap_or(false)
         && !matches!(turn_context.approval_policy, AskForApproval::OnRequest)
     {
@@ -2819,6 +2827,7 @@ async fn handle_container_exec_with_params(
                 justification: params.justification.clone(),
             };
             let safety = if *user_explicitly_approved_this_action {
+                auto_approved_via_user = true;
                 SafetyCheck::AutoApprove {
                     sandbox_type: SandboxType::None,
                 }
@@ -2852,7 +2861,21 @@ async fn handle_container_exec_with_params(
     };
 
     let sandbox_type = match safety {
-        SafetyCheck::AutoApprove { sandbox_type } => sandbox_type,
+        SafetyCheck::AutoApprove { sandbox_type } => {
+            let source = if auto_approved_via_user {
+                ToolDecisionSource::UserTemporary
+            } else {
+                ToolDecisionSource::Config
+            };
+
+            trace_manager.tool_decision(
+                tool_name,
+                ToolDecisionOutcome::Accept,
+                source,
+            );
+
+            sandbox_type
+        }
         SafetyCheck::AskUser => {
             let rx_approve = sess
                 .request_command_approval(
@@ -2864,11 +2887,27 @@ async fn handle_container_exec_with_params(
                 )
                 .await;
             match rx_approve.await.unwrap_or_default() {
-                ReviewDecision::Approved => (),
+                ReviewDecision::Approved => {
+                    trace_manager.tool_decision(
+                        tool_name,
+                        ToolDecisionOutcome::Accept,
+                        ToolDecisionSource::UserTemporary,
+                    );
+                }
                 ReviewDecision::ApprovedForSession => {
+                    trace_manager.tool_decision(
+                        tool_name,
+                        ToolDecisionOutcome::Accept,
+                        ToolDecisionSource::UserForSession,
+                    );
                     sess.add_approved_command(params.command.clone()).await;
                 }
-                ReviewDecision::Denied | ReviewDecision::Abort => {
+                ReviewDecision::Denied => {
+                    trace_manager.tool_decision(
+                        tool_name,
+                        ToolDecisionOutcome::Reject,
+                        ToolDecisionSource::UserReject,
+                    );
                     return ResponseInputItem::FunctionCallOutput {
                         call_id,
                         output: FunctionCallOutputPayload {
@@ -2877,6 +2916,20 @@ async fn handle_container_exec_with_params(
                         },
                     };
                 }
+                ReviewDecision::Abort => {
+                    trace_manager.tool_decision(
+                        tool_name,
+                        ToolDecisionOutcome::Reject,
+                        ToolDecisionSource::UserAbort,
+                    );
+                    return ResponseInputItem::FunctionCallOutput {
+                        call_id,
+                        output: FunctionCallOutputPayload {
+                            content: "exec command aborted by user".to_string(),
+                            success: None,
+                        },
+                    };
+                }
             }
             // No sandboxing is applied because the user has given
             // explicit approval. Often, we end up in this case because
@@ -2885,6 +2938,11 @@ async fn handle_container_exec_with_params(
             SandboxType::None
         }
         SafetyCheck::Reject { reason } => {
+            trace_manager.tool_decision(
+                tool_name,
+                ToolDecisionOutcome::Reject,
+                ToolDecisionSource::Config,
+            );
             return ResponseInputItem::FunctionCallOutput {
                 call_id,
                 output: FunctionCallOutputPayload {
diff --git a/codex-rs/otel/Cargo.toml b/codex-rs/otel/Cargo.toml
index e86495a64e..5e794aa051 100644
--- a/codex-rs/otel/Cargo.toml
+++ b/codex-rs/otel/Cargo.toml
@@ -41,7 +41,9 @@ opentelemetry-otlp = { version = "0.30.0", features = ["grpc-tonic", "http-proto
 opentelemetry-proto = { version = "0.30.0", features = ["gen-tonic"], optional = true }
 tokio = { version = "1", features = ["rt", "rt-multi-thread", "macros"], optional = true }
 tonic = { version = "0.13.1", optional = true }
+serde = { version = "1", features = ["derive"] }
 serde_json = { version = "1", optional = true }
+strum_macros = "0.27.2"
 uuid = { version = "1.18.1", features = ["v4"] }
 time = { version = "0.3", features = ["formatting", "parsing", "local-offset", "macros"] }
 walkdir = "2.5.0"
diff --git a/codex-rs/otel/src/trace_manager.rs b/codex-rs/otel/src/trace_manager.rs
index 7ce3e7928a..3038cb3e7d 100644
--- a/codex-rs/otel/src/trace_manager.rs
+++ b/codex-rs/otel/src/trace_manager.rs
@@ -9,9 +9,11 @@ use opentelemetry_http::HeaderInjector;
 use opentelemetry_sdk::propagation::TraceContextPropagator;
 use reqwest::StatusCode;
 use reqwest::header::HeaderMap;
+use serde::Serialize;
 use tracing::Span;
 use tracing::info_span;
 use tracing_opentelemetry::OpenTelemetrySpanExt;
+use strum_macros::Display;
 
 pub struct RequestSpan(pub(crate) Span);
 
@@ -133,6 +135,56 @@ impl SSESpan {
     }
 }
 
+#[derive(Debug, Clone, Serialize, Display)]
+#[serde(rename_all = "snake_case")]
+pub enum ToolDecisionOutcome {
+    Accept,
+    Reject,
+}
+
+#[derive(Debug, Clone, Serialize, Display)]
+#[serde(rename_all = "snake_case")]
+pub enum ToolDecisionSource {
+    Config,
+    UserForSession,
+    UserTemporary,
+    UserAbort,
+    UserReject,
+}
+
+pub struct ToolDecisionSpan(pub(crate) Span);
+
+impl ToolDecisionSpan {
+    pub fn new(
+        metadata: TraceMetadata,
+        tool_name: &str,
+        outcome: ToolDecisionOutcome,
+        source: ToolDecisionSource,
+    ) -> Self {
+        let span = info_span!(
+            "codex.tool_decision",
+            session.id = %metadata.conversation_id,
+            app.version = %metadata.app_version,
+            user.account_id = tracing::field::Empty,
+            terminal.type = %metadata.terminal_type,
+            event.timestamp = %timestamp(),
+            tool_name = %tool_name,
+            decision = outcome.to_string(),
+            source = source.to_string(),
+        );
+
+        if let Some(account_id) = &metadata.account_id {
+            span.record("user.account_id", account_id);
+        }
+
+        ToolDecisionSpan(span)
+    }
+
+    pub fn span(&self) -> Span {
+        self.0.clone()
+    }
+}
+
 pub struct UserPromptSpan(pub(crate) Span);
 
 impl UserPromptSpan {
@@ -240,6 +292,10 @@ impl TraceManager {
 
         UserPromptSpan::new(self.metadata.clone(), prompt.as_ref())
     }
+
+    pub fn tool_decision(&self, tool_name: &str, outcome: ToolDecisionOutcome, source: ToolDecisionSource) -> ToolDecisionSpan {
+        ToolDecisionSpan::new(self.metadata.clone(), tool_name, outcome, source)
+    }
 }
 
 fn timestamp() -> String {