# modal.wsgi_app

```python
def wsgi_app(
    *,
    label: Optional[str] = None,  # Label for created endpoint. Final subdomain will be <workspace>--<label>.modal.run.
    custom_domains: Optional[Iterable[str]] = None,  # Deploy this endpoint on a custom domain.
    requires_proxy_auth: bool = False,  # Require Modal-Key and Modal-Secret HTTP Headers on requests.
) -> Callable[[Union[_PartialFunction, NullaryFuncOrMethod]], _PartialFunction]:
```

Decorator for registering a WSGI app with a Modal function.

Web Server Gateway Interface (WSGI) is a standard for synchronous Python web apps.
It has been [succeeded by the ASGI interface](https://asgi.readthedocs.io/en/latest/introduction.html#wsgi-compatibility)
which is compatible with ASGI and supports additional functionality such as web sockets.
Modal supports ASGI via [`asgi_app`](https://modal.com/docs/reference/modal.asgi_app).

**Usage:**

```python
from typing import Callable

@app.function()
@modal.wsgi_app()
def create_wsgi() -> Callable:
    ...
```

To learn how to use this decorator with popular web frameworks, see the
[guide on web endpoints](https://modal.com/docs/guide/webhooks).