# auth-controller Auth Controller ## Get JWT Token for a User - [GET /api/v1/authenticate](https://fnoapi.redocly.app/apis/rest/registry-service/softwarecontainerdelivery/auth-controller/authenticateusingget.md): When calling the Software Container Delivery REST API, a producer user must authenticate themselves, using the "/authenticate" endpoint. The FlexNet Operations producers pass their credentials to the "/authenticate" endpoint, which creates a JSON Web Token (JWT) that can be used to authorize access to any endpoint of the Software Container Delivery REST API. Credentials are a Base64-encoded combination of the producer's user name and password separated by a colon (:).