Dynamic Client Registration

Support for Dynamic Client Registration (RFC 7591 <https://www.rfc-editor.org/rfc/rfc7591>_) can be turned on via IDP_OIDC_DCR_ENABLED. Once enabled, clients can register themselves by POSTing their metadata to /identity/o/api/clients.

Whether or not creating clients requires authorization is configurable via IDP_OIDC_DCR_REQUIRES_INITIAL_ACCESS_TOKEN, which is True by default. When authorization is enabled, the bearer token from the Authorization: Bearer <token> header will be used to lookup a token (allauth.idp.oidc.models.Token) of type Token.Type.INITIAL_ACCESS_TOKEN.

The DCR specification does not specify anything about the lifetime of the initial access token, neither does the allauth implementation. If you want to enforce specific rules, such as limiting the number of times the token can be used, you can inspect and manipulate the token in the validate_client_registration() adapter hook.