SLA & Uptime Overview
Seiri computes uptime from push check-ins, not from polling your public URL. If a Periodic/Cron webhook misses its window or reports /fail, that window counts against uptime.
Where it lives
Services → SLA & Uptime
Tabs:
| Tab | Purpose |
|---|---|
| Overview | 7 / 30 / 90-day uptime per webhook |
| SLA Targets | Target % and alert-on-breach per webhook |
| Error Budgets | Remaining budget for the period |
Concepts
- Uptime — share of expected windows that checked in successfully.
- SLA target — e.g. 99.9% over a period.
- Error budget — how much downtime you can still “spend” before breaching the target.
- Badges — embeddable SVG uptime/status badges for a webhook (when enabled on the target).

Relation to webhooks
Every series and target is tied to a webhook under Core → Webhooks. Fix missed check-ins there first; SLA views summarize the same events.
See Quickstart.