How does FastAPI integrate with GraphQL?

FastAPI integrates with Strawberry (the recommended library) for GraphQL: import strawberry; from strawberry.fastapi import GraphQLRouter; @strawberry.type class Query: @strawberry.field def hello(self) -> str: return "world"; schema = strawberry.Schema(Query); graphql_app = GraphQLRouter(schema); app.include_router(graphql_app, prefix="/graphql"). Strawberry uses Python type annotations with its own decorators. Context injection: pass the request/user to resolvers via context: async def get_context(request: Request) -> Context: return Context(request=request, user=await get_current_user(request)). Async resolvers work natively. Subscriptions over WebSocket are supported. DataLoader (batching) solves N+1 queries. Alternatively, use Ariadne (schema-first) or Graphene (older, code-first). FastAPI + Strawberry is the modern Python GraphQL stack — it benefits from FastAPI's performance, dependency injection, and Swagger UI (for HTTP layer) alongside GraphQL's flexible queries.