Shared API Contract

Download the versioned OpenAPI contract for account usage, model discovery and chat. Account usage supports inclusive UTC dates and includes revoked keys and playground sessions.

GET /api/user/usage?from=2026-10-01&to=2026-10-31

error: { code, message, request_id, retryable, retry_after }

retry_after is expressed in seconds. Streaming errors carry the same request ID. Automatic chat retries may incur additional charges; repeat requests deliberately.