{"issuer":"https://accounts.google.com","authorization_endpoint":"https://accounts.google.com/o/oauth2/v2/auth","token_endpoint":"https://oauth2.googleapis.com/token","jwks_uri":"https://www.googleapis.com/oauth2/v3/certs","response_types_supported":["code","token","id_token","code id_token","code token"],"grant_types_supported":["authorization_code","refresh_token"],"code_challenge_methods_supported":["S256","plain"],"token_endpoint_auth_methods_supported":["client_secret_post","client_secret_basic"],"agent_auth":{"public_api":"none","mcp":"none","operator_api":"google_oauth"}}