# Document APIs

Redocly supports API description files written according to the most commonly-used specifications:

- [Add AsyncAPI descriptions](/docs/platform/content/api-docs/add-asyncapi-docs)
- [Add GraphQL descriptions](/docs/platform/content/api-docs/add-graphql-docs)
- [Add OpenAPI descriptions](/docs/platform/content/api-docs/add-openapi-docs)
- [Add SOAP documentation from WSDL files](/docs/platform/content/api-docs/add-soap-docs)

Redocly also offers the mock server as an alternative to live endpoints and supports extensions for AsyncAPI and OpenAPI description files:

- [Configure the mock server](/docs/platform/content/api-docs/configure-mock-server): use the Replay console to send calls to your API operations and see sample responses without the need for backend services.
- [AsyncAPI extensions](/docs/platform/content/api-docs/asyncapi-extensions): See the full list of supported AsyncAPI extensions.
- [OpenAPI extensions](/docs/platform/content/api-docs/openapi-extensions): See the full list of supported OpenAPI extensions.