diff --git a/kontext/agent/v1/agent.proto b/kontext/agent/v1/agent.proto
index 768269f..2442407 100644
--- a/kontext/agent/v1/agent.proto
+++ b/kontext/agent/v1/agent.proto
@@ -43,6 +43,10 @@ message ProcessHookEventRequest {
   bytes tool_response = 6; // JSON-encoded tool response (PostToolUse only)
   string tool_use_id = 7;
   string cwd = 8;
+  optional string permission_mode = 9;
+  optional int64 duration_ms = 10;
+  optional string error = 11;
+  optional bool is_interrupt = 12;
 }
 
 message ProcessHookEventResponse {