You could also use `from starlette.responses import JSONResponse`.

    **FastAPI** provides the same `starlette.responses` as `fastapi.responses` just as a convenience for you, the developer. But most of the available responses come directly from Starlette. The same with `status`.

## OpenAPI and API docs

    But by declaring the type as `Session`, the editor now can know the available methods (`.add()`, `.query()`, `.commit()`, etc) and can provide better support (like completion). The type declaration doesn't affect the actual object.

### Create your **FastAPI** *path operations*

    You could also use `from starlette.middleware.cors import CORSMiddleware`.

## Technical Details

!!! tip
    If you are already using **FastAPI** version **0.99.0 or above**, you can probably **skip** these details.

    They are more relevant for older versions, before OpenAPI 3.1.0 was available.

    You can consider this a brief OpenAPI and JSON Schema **history lesson**. 🤓

!!! warning
    These are very technical details about the standards **JSON Schema** and **OpenAPI**.