# Authorization

- [OAuth Service](/api-references/api-guides-and-references/authorization/oauth-service.md)
- [API Reference](/api-references/api-guides-and-references/authorization/oauth-service/api-reference.md)
- [Service Access Token](/api-references/api-guides-and-references/authorization/oauth-service/api-reference/service-access-token.md)
- [Models](/api-references/api-guides-and-references/authorization/oauth-service/api-reference/models.md)