Full-Stack Development

Use for features that span both FastAPI backend and Next.js frontend.

Architecture

• Backend: FastAPI + Python 3.13+, TinyDB, LiteLLM
• Frontend: Next.js 16 + React 19, Tailwind CSS v4, Swiss International Style
• API: REST endpoints at /api/v1/*

Workflow

1. Design the API contract first

Route:     POST /api/v1/my-feature
Request:   { field: string, ... }
Response:  { id: string, result: ... }