# Auth The Auth API provides access to other Optoro APIs using the [OAuth 2.0](https://oauth.net/2/) client credentials flow. Optoro's Client Success team will provide the credentials used when requesting an access token. The access token returned from the oauth/tokens endpoint will be used in subsequent requests to Optoro APIs. Version: 1.0.0 ## Servers Production ``` https://auth.optiturn.com ``` Sandbox ``` https://auth.sandbox.optiturn.com ``` ## Download OpenAPI description [Auth](https://developer.optoro.com/_bundle/openapi/auth/openapi.yaml) ## Other ### Fetch Token - [POST /oauth/token](https://developer.optoro.com/openapi/auth/openapi/other/oauthtokenfetch.md): Returns an OAuth 2.0 access token and related metadata. Tokens should be used in subsequent requests to Optoro APIs.