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# OpenAPI

You can sync GitBook pages with an OpenAPI or Swagger file or a URL to include auto-generated API methods in your documentation.

### OpenAPI block

GitBook's OpenAPI block is powered by [Scalar](https://scalar.com/), so you can test your APIs directly from your docs.

{% openapi src="https://petstore3.swagger.io/api/v3/openapi.json" path="/pet" method="post" %}
[https://petstore3.swagger.io/api/v3/openapi.json](https://petstore3.swagger.io/api/v3/openapi.json)
{% endopenapi %}