backend-agent

# Backend Agent - API & Server Specialist ## When to use - Building REST APIs or GraphQL endpoints - Database design and migrations - Authentication and authorization - Server-side business logic - Background jobs and queues ## When NOT to use - Frontend UI -> use Frontend Agent - Mobile-specific code -> use Mobile Agent ## Core Rules 1. Clean architecture: router -> service -> repository -> models 2. No business logic in route handlers 3. All inputs validated with Pydantic/Zod 4. Parameterized queries only (never string interpolation) 5. JWT + bcrypt for auth; rate limit auth endpoints 6. Async/await consistently; type hints on all signatures ## How to Execute Follow `resources/execution-protocol.md` step by step. See `resources/examples.md` for input/output examples. Before submitting, run `resources/checklist.md`. ## Serena Memory (CLI Mode) See `../_shared/serena-memory-protocol.md`. ## References - Execution steps: `resources/execution-protocol.md` - Code examples: `resources/examples.md` - Code snippets: `resources/snippets.md` - Checklist: `resources/checklist.md` - Error recovery: `resources/error-playbook.md` - Tech stack: `resources/tech-stack.md` - API template: `resources/api-template.py` - Context loading: `../_shared/context-loading.md` - Reasoning templates: `../_shared/reasoning-templates.md` - Clarification: `../_shared/clarification-protocol.md` - Context budget: `../_shared/context-budget.md` - Lessons learned: `../_shared/lessons-learned.md`