generated: '2026-08-20' method: searched source: https://sylvia-api.com/openapi.json — components.schemas.ErrorResponse published_by_provider: true envelope: shape: Every response carries a top-level success flag; failures return an ErrorResponse. code_field: code stable: true code_count: 9 codes: - code: BAD_REQUEST - code: UNAUTHORIZED - code: FORBIDDEN - code: NOT_FOUND - code: LOW_BALANCE - code: RATE_LIMITED - code: FEATURE_LOCKED - code: TIER_EXPIRED - code: REQUEST_FAILED note: Transcribed from the provider's own published contract. Not authored here.