> ## Documentation Index
> Fetch the complete documentation index at: https://fastql.vachagan.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Context and Info

> Pass request state and inspect the active GraphQL field.

Pass request-scoped state through the `context` argument to `execute`.

```python theme={null}
from dataclasses import dataclass

from fastql import Context, Field, Info, Query, execute


@dataclass
class RequestContext(Context):
    user_id: str | None
    request_id: str


@Query
class QueryRoot:
    @Field
    def viewer(self, ctx: RequestContext, info: Info[RequestContext, object]) -> str | None:
        assert info.context is ctx
        return ctx.user_id


result = await execute(schema, "{ viewer }", context=request_context)
```

Type annotations are the primary injection signal. A parameter typed as a `Context`
subclass receives the context object regardless of its name. Parameters named
`context` or `ctx` are also treated as context for compatibility. `Info` exposes
the schema, field name, parent type, path, variables, operation, root value, and
typed context.

Keep authentication principals, request identifiers, loaders, and service handles
on a context object created per request. Avoid mutable process-global request state.