# 5.7 — POST /api/chat (GREEN)

Phase: 5 — Chat + Rate Limiter (Surface D)
Stage: GREEN

Depends on: [5.1](5.1-ratelimit-test.md), [5.2](5.2-disconnect-test.md), [5.3](5.3-budget-test.md)

- [ ] `POST /api/chat` — session + Turnstile, 12/day/session, 6 global concurrent, SSE token stream