Reference
Exhaustive listings: REST API, webhook payloads, limits, and configuration tables.
What's in this section
Reference pages are the source of truth for shapes, names, and exhaustive lists. They are intentionally dry; if you want narrative, see Concepts or Tutorials.
- REST API: every endpoint, request/response shape, error code.
- Webhooks: outbound payloads, headers, signature verification.
- Limits & quotas: per-capability numerical limits (monitors, heartbeats, status pages).
- Email delivery & unsubscribe: critical vs. non-critical mail, one-click unsubscribe, bounce/complaint suppression.
Reference content rarely changes. When it does, the page header carries a "Last updated" stamp so you can confirm freshness at a glance.
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