4. Discovery Metadata
Support for this protocol is declared in OAuth 2.0 Authorization Server Metadata [RFC8414] as follows. The value "urn:ietf:params:oauth:grant-type:device_code" is included in values of the "grant_types_supported" key, and the following new key value pair is added:
device_authorization_endpoint
- OPTIONAL. URL of the authorization server's device authorization endpoint, as defined in Section 3.1.