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Every adapter creates an HTTPContext before execution. It contains the native framework request, host application where available, mutable request state, and request-scoped response controls. 
from fastql.integrations import HTTPContext

async def make_context(context: HTTPContext):
    context.state.current_user = await authenticate(context.request)
    context.response.set_header("x-request-source", "graphql")
    return context
Pass the factory to any adapter with context_factory=make_context. Factories can be synchronous or asynchronous. Returning None keeps the supplied context; returning another Context object replaces it for resolver and Info.context injection. For typed application state while preserving request access, subclass HTTPContext and return that subclass from the factory. Middleware should populate authentication and request state before the adapter. FastQL does not duplicate framework dependency injection or security policy.