Errors

Platform, admin, and public gateway APIs use a central error object with code, message, and requestId. Gateway admission rejections (UNAUTHENTICATED, RATE_LIMITED, INSUFFICIENT_CREDITS, FORBIDDEN) are not charged and do not call the upstream.

Request-log codes include REQUEST_LOG_NOT_FOUND, DETAILS_EXPIRED (410, without fetching R2), DETAILS_UNAVAILABLE, and LOG_INGEST_CONFLICT.