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      docs/tr/docs/advanced/response-headers.md

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# Response Headers
## Use a `Response` parameter
You can declare a parameter of type `Response` in your *path operation function* (as you can do for cookies).
And then you can set headers in that *temporal* response object.
```Python hl_lines="1 7-8"
{!../../../docs_src/response_headers/tutorial002.py!}
```
And then you can return any object you need, as you normally would (a `dict`, a database model, etc).
And if you declared a `response_model`, it will still be used to filter and convert the object you returned.
**FastAPI** will use that *temporal* response to extract the headers (also cookies and status code), and will put them in the final response that contains the value you returned, filtered by any `response_model`.
You can also declare the `Response` parameter in dependencies, and set headers (and cookies) in them.
## Return a `Response` directly
You can also add headers when you return a `Response` directly.
Create a response as described in [Return a Response Directly](response-directly.md){.internal-link target=_blank} and pass the headers as an additional parameter:
```Python hl_lines="10-12"
{!../../../docs_src/response_headers/tutorial001.py!}
```
!!! note "Technical Details"
You could also use `from starlette.responses import Response` or `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.
And as the `Response` can be used frequently to set headers and cookies, **FastAPI** also provides it at `fastapi.Response`.
## Custom Headers
Keep in mind that custom proprietary headers can be added <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers" class="external-link" target="_blank">using the 'X-' prefix</a>.
But if you have custom headers that you want a client in a browser to be able to see, you need to add them to your CORS configurations (read more in [CORS (Cross-Origin Resource Sharing)](../tutorial/cors.md){.internal-link target=_blank}), using the parameter `expose_headers` documented in <a href="https://www.starlette.io/middleware/#corsmiddleware" class="external-link" target="_blank">Starlette's CORS docs</a>.
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