Here we declare the setting `openapi_url` with the same default of `"/openapi.json"`.

And then we use it when creating the `FastAPI` app.

Then you could disable OpenAPI (including the UI docs) by setting the environment variable `OPENAPI_URL` to the empty string, like:

<div class="termy">

```console
$ OPENAPI_URL= uvicorn main:app

You can reuse FastAPI's internal functions to create the HTML pages for the docs, and pass them the needed arguments:

* `openapi_url`: the URL where the HTML page for the docs can get the OpenAPI schema for your API. You can use here the attribute `app.openapi_url`.
* `title`: the title of your API.
* `oauth2_redirect_url`: you can use `app.swagger_ui_oauth2_redirect_url` here to use the default.

## OpenAPI URL

OpenAPI 구조는 기본적으로  `/openapi.json`에서 제공됩니다.

`openapi_url` 매개변수를 통해 이를 설정할 수 있습니다.

예를 들어, 이를 `/api/v1/openapi.json`에 제공하도록 설정하려면:

```Python hl_lines="3"
{!../../docs_src/metadata/tutorial002.py!}
```

OpenAPI 구조를 완전히 비활성화하려면 `openapi_url=None`으로 설정할 수 있으며, 이를 사용하여 문서화 사용자 인터페이스도 비활성화됩니다.

## 문서화 URL

포함된 두 가지 문서화 사용자 인터페이스를 설정할 수 있습니다:

Mas você pode configurá-lo com o parâmetro `openapi_url`.

Por exemplo, para defini-lo para ser servido em `/api/v1/openapi.json`:

```Python hl_lines="3"
{!../../docs_src/metadata/tutorial002.py!}
```

Se você quiser desativar completamente o esquema OpenAPI, pode definir `openapi_url=None`, o que também desativará as interfaces de documentação que o utilizam.

A `FastAPI` application (instance) has an `.openapi()` method that is expected to return the OpenAPI schema.

As part of the application object creation, a *path operation* for `/openapi.json` (or for whatever you set your `openapi_url`) is registered.

It just returns a JSON response with the result of the application's `.openapi()` method.

* Remove obsolete vote link. PR [#1289](https://github.com/tiangolo/fastapi/pull/1289) by [@donhui](https://github.com/donhui).
* Allow disabling docs UIs by just disabling OpenAPI with `openapi_url=None`. New example in docs: [Advanced: Conditional OpenAPI](https://fastapi.tiangolo.com/advanced/conditional-openapi/). PR [#1421](https://github.com/tiangolo/fastapi/pull/1421).