Identity compatibility

Identity compatibility

Follow the endpoint contract

Each public endpoint lists its accepted identities, credentials and scopes in API Reference. Historical endpoint tables do not establish current authorization requirements.

EndpointAccess requirements
GET /v1/users/meUSER; OAuth2 or API Key; user:profile
GET /v1/scopesNo credentials
POST /v1/creative/assetsUSER or ORG; creative
; remaining fields per API Reference

Browser OAuth authorization uses accounts /oauth2/authorize; token exchange uses /oauth2/token. A protected business API RPC is not a browser sign-in entry point.

For authentication or permission failures, read the actual HTTP status and reason in error.details. Public REST errors use a nested error envelope. See errors and retries.