## QA Verification Complete ✅ **Status:** VERIFIED - ALL CRITERIA PASS **Test Results:** - ✅ All 185 unit tests pass - ✅ Error response format: {"error": {"code": "...", "message": "..."}} - ✅ HTTP status codes match spec (401, 404, 409, 429, 500) - ✅ All 11 error codes implemented (8 from spec + 3 additional) - ✅ request_id included in all error responses - ✅ Stack traces not exposed (generic message returned) **Implementation Quality:** - Comprehensive error module with ErrorCode enum and exception classes - Global exception handlers registered in main.py - Centralized error handling replaces ad-hoc HTTPException usage - 278 lines of test coverage in test_errors.py - No regressions, all existing tests pass **Files Verified:** - src/cli_agent_api/errors.py (381 lines) - Complete error handling module - src/cli_agent_api/main.py - Exception handlers registered - src/cli_agent_api/auth.py - Uses centralized UnauthorizedError - tests/unit/test_errors.py (278 lines) - Comprehensive test coverage See detailed QA report: /tmp/qa-CLIAPI-30.md **Recommendation:** READY FOR MERGE

## Implementation Complete ### Changes Made 1. **Created `src/cli_agent_api/errors.py`** with: - `ErrorCode` enum with all spec error codes (UNAUTHORIZED, SESSION_NOT_FOUND, SESSION_ALREADY_RUNNING, SESSION_NOT_RUNNING, INVALID_CONFIG, CLAUDE_NOT_FOUND, PROCESS_ERROR, RATE_LIMITED, etc.) - Specific exception classes: `UnauthorizedError`, `SessionNotFoundError`, `SessionAlreadyRunningError`, `SessionNotRunningError`, `SessionWaitingPermissionError`, `InvalidConfigError`, `RateLimitedError`, `ClaudeNotFoundError`, `ProcessError`, `InternalError` - Error response format matching spec: `{"error": {"code": "...", "message": "...", "details": {...}, "request_id": "..."}}` - Global exception handlers for FastAPI 2. **Updated `src/cli_agent_api/main.py`**: - Registered `APIError` exception handler - Registered generic `Exception` handler 3. **Updated `src/cli_agent_api/auth.py`**: - Replaced `HTTPException` with `UnauthorizedError` - Removed local `_create_error_response` helper 4. **Updated `tests/unit/test_auth.py`**: - Fixed tests to expect new response format (`data["error"]` instead of `data["detail"]["error"]`) - Added assertion for `request_id` in error responses 5. **Added `tests/unit/test_errors.py`** with comprehensive tests ### Verification ``` ✓ All 185 unit tests pass ✓ All 86 integration tests pass ✓ Error responses include request_id ✓ HTTP status codes match spec ✓ All spec error codes implemented ✓ Stack traces not exposed (generic 500 for unhandled exceptions) ``` ### QA Criteria Status - [x] All errors return `{"error": {"code": "...", "message": "..."}}` - [x] HTTP status codes match spec - [x] All spec error codes are implemented - [x] request_id included in error responses - [x] Stack traces not exposed in production

## Feature Triage Complete **Status:** PARTIALLY IMPLEMENTED **Summary:** - `auth.py` already has `_create_error_response()` helper creating spec format - But errors are wrapped in `HTTPException.detail` causing nested response - No centralized `errors.py` module exists - No global exception handlers registered - No `request_id` included in error responses **Implementation Location:** - New: `src/cli_agent_api/errors.py` - Exception classes, ErrorCode enum, response models - Modify: `src/cli_agent_api/main.py` - Register exception handlers - Modify: `src/cli_agent_api/auth.py` - Use centralized exceptions **Complexity:** Medium - Mostly boilerplate but requires careful handler ordering See attached triage report for full details: /tmp/triage-CLIAPI-30.md