# Monitoring / alerts (P7.OPS.05)

| Signal | Threshold | Owner |
|--------|-----------|-------|
| 5xx rate | >1% / 5m | On-call |
| Queue depth | Horizon failed jobs >0 critical | On-call |
| Payment fail | spike vs baseline | Payments |
| Social token expiry | health != ok | Social |
| Disk | <15% free | Infra |
| SSL | expiry <14d | Infra |

On-call roster: _fill names_. Test pages: `/up`, Pulse, Horizon.