Grant

Client Credentials

The client credentials grant is used in machine-to-machine scenarios. For example, you would use it with a client making API requests that do not require a user's permission.

The client sends a POST request with the following body parameters to the authorization server:

• grant_type = client_credentials.
• client_id with the client's ID.
• client_secret with the client's secret.
• scope with a space-delimited list of requested scope permissions.

The authorization server responds with a JSON payload as follows:

{
    "token_type" : "Bearer",
    "expires_in" : "3600",
    "access_token" : "eyJ0eXAiOiJKV1Q..."
}

The values returned are as follows:

• The token_type is the type of generated token (here, and generally, Bearer).
• expires_in is an integer representing the time-to-live (in seconds) of the access token.
• The access_token contains a JSON Web Token (JWT) signed with the authorization server’s private key. This token must be used in the Authorization request HTTP header in subsequent requests.