# Backend

FastAPI service containing the REST demo backend, WebSocket streaming gateway, generated tool registry, planner, policy engine, validation layer, executor, memory adapters, and event publisher.

Run locally:

```bash
uvicorn app.main:app --reload
```

The planner uses Anthropic Claude when `ANTHROPIC_API_KEY` is configured and otherwise falls back to deterministic intent extraction. The default model is `claude-sonnet-4-6`.