| S1 | Payments broadly fail or every paid call fails, blocking paid use. | Payment settlement fails across otherwise valid paid requests, or all paid tool submissions fail. |
| S2 | One tool family is unavailable while other families remain usable. | All browser jobs fail while research and messaging continue to work. |
| S3 | One tool is degraded or slow with narrower impact. | Person profile enrichment accepts jobs but finishes slowly while other enrichment tools work. |
| S4 | A question or guidance request without an observed service failure. | A developer asks how to recover a request using its idempotency key. |