Recipes

Short, opinionated cookbook entries. Each one is a complete, runnable snippet that solves a single concrete problem. Browse the list:

• Expose a service — the smallest possible end-to-end.
• Swap the session store — when the default cache isn't what you want.
• Ship TOON for large lists — token-efficient tool output.
• Add a custom permission — beyond ScopeRequired.
• Write an async-native auth backend — httpx introspection against a remote IDP without blocking the event loop.
• Add rate limiting — per-binding MCPRateLimit with the shipped FixedWindowRateLimit / SlidingWindowRateLimit or your own.
• Multi-worker SSE with Redis — swap the in-memory broker for RedisSSEBroker so any ASGI worker can fan out push messages.
• Resume SSE with Last-Event-ID — opt-in per-session replay buffer so reconnecting clients catch up on missed events.
• Honor drf-spectacular annotations — feed @extend_schema_serializer / @extend_schema_field metadata into the MCP inputSchema automatically.
• Selector tool with FilterSet — expose a list-shaped read tool with django-filter, ordering, and pagination, generated inputSchema and all.
• Migrate from fastapi-mcp / hand-rolled MCP — step by step from a custom Django MCP view or a fastapi-mcp app.