Fastapi Code Review
Reviews FastAPI codebases for routing, dependency injection, validation, and async patterns. Checks that routes have response models, dependencies use Depends() properly, Pydantic handles validation, and handlers avoid blocking I/O. The gates are thorough, requiring you to verify route decorators, trace blocking calls with file locations, and confirm auth dependencies before flagging issues. It knows idiomatic FastAPI patterns that look weird but are correct, like async handlers without await or returning plain dicts when response_model is set. Good for teams who want structured FastAPI reviews that don't flag framework features as bugs.
- skills.sh installs
- 387
- GitHub stars
- 87
- last updated
- Aug 21, 2026
Install
$ npx -y skills add existential-birds/beagle --skill fastapi-code-review --agent claude-codeInstalls into .claude/skills of the current project.
Files
FastAPI Code Review
Quick Reference
| Issue Type | Reference |
|---|---|
| APIRouter setup, response_model, status codes | references/routes.md |
| Depends(), yield deps, cleanup, shared deps | references/dependencies.md |
| Pydantic models, HTTPException, 422 handling | references/validation.md |
| Async handlers, blocking I/O, background tasks | references/async.md |
Review Checklist
- APIRouter with proper prefix and tags
- All routes specify
response_modelfor type safety - Correct HTTP methods (GET, POST, PUT, DELETE, PATCH)
- Proper status codes (200, 201, 204, 404, etc.)
- Dependencies use
Depends()not manual calls - Yield dependencies have proper cleanup
- Request/Response models use Pydantic
- HTTPException with status code and detail
- All route handlers are
async def - No blocking I/O (
requests,time.sleep,open()) - Background tasks for non-blocking operations
- No bare
exceptin route handlers
Valid Patterns (Do NOT Flag)
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- Repository
- github.com/existential-birds/beagle
- Categories
- Git & Pull Requests, Code Review & Quality, Python
- First seen
- Jun 3, 2026
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