## QA PASSED ✅ **Verification Complete**: All acceptance criteria met and verified through comprehensive testing. ### Test Results - ✅ All 114 unit tests pass (4.94s) - ✅ uvicorn starts without errors - ✅ CORS headers present for configured origins - ✅ X-Request-ID header in all responses - ✅ Client-provided X-Request-ID echoed correctly - ✅ Server generates valid UUID when not provided ### Live Testing - Health endpoint: Returns correct structure with status, claude_version, active_sessions - Info endpoint: Returns version, features, and configuration details - CORS: Properly configured with allowed origins, credentials, and exposed headers - Request ID: UUID v4 format, unique per request, echoed when provided ### Code Quality - Follows FastAPI best practices (app factory, lifespan context) - Comprehensive test coverage (20 new tests) - Proper error handling and timeouts - Clean separation of concerns - No security vulnerabilities **Full QA Report**: /tmp/qa-CLIAPI-3.md **Recommendation**: Implementation is production-ready. Issue can be closed.

## Implementation Complete ### Changes Made: **1. Created middleware.py** (src/cli_agent_api/middleware.py) - Implemented RequestIDMiddleware using BaseHTTPMiddleware - Generates UUID when client doesn't provide X-Request-ID - Echoes back client-provided X-Request-ID - Stores request_id in request.state for handler access **2. Implemented main.py** (src/cli_agent_api/main.py) - Added app factory pattern with create_app() function - Implemented lifespan context manager for startup/shutdown - Added RequestIDMiddleware to all requests - Added CORS middleware (conditional on cors.allowed_origins) - Exposed X-Request-ID header in CORS - Mounted health router with /v1 prefix - Set up app metadata (title, version, description) **3. Implemented health router** (src/cli_agent_api/routers/health.py) - GET /v1/health - Returns status, claude_version, active_sessions - GET /v1/info - Returns version, claude info, and features - Helper function to get Claude CLI version **4. Added unit tests** (tests/unit/test_middleware.py, tests/unit/test_main.py) - 20 new tests covering middleware and main app functionality - All 114 tests pass ### Verification: - `uvicorn cli_agent_api.main:app` starts without errors ✓ - CORS headers present for configured origins ✓ - X-Request-ID header in all responses ✓ - Client-provided X-Request-ID is echoed back ✓ - Server generates UUID if client doesn't provide X-Request-ID ✓ - All linter checks pass ✓

## Feature Triage Complete **Status:** NOT IMPLEMENTED (placeholder only) **Summary:** The main.py and auth.py files exist but contain only docstring placeholders. The configuration system (CorsConfig, etc.) is fully implemented and ready to use. No middleware.py exists yet. **Implementation Location:** - `src/cli_agent_api/main.py` - Replace placeholder with app factory - `src/cli_agent_api/middleware.py` - NEW file for RequestIDMiddleware - `src/cli_agent_api/routers/health.py` - Implement health endpoints **Complexity:** Low-Medium **Dependencies:** All met (CLIAPI-1, CLIAPI-2 are done, no new packages needed) **Key Implementation Points:** 1. Use lifespan context manager (FastAPI 0.91.0+ pattern) 2. Custom BaseHTTPMiddleware for X-Request-ID (no external deps) 3. CORS from existing CorsConfig model 4. Mount routers with /v1 prefix per SPEC.md See full triage report at: /tmp/triage-CLIAPI-3.md