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Webhooks: the event backbone

Every adapter in this section is wired on the same outbound half. The moment an entitlement, session or usage counter changes, MonetizeIt signs an event and POSTs it to an endpoint you choose — your own receiver, or a Webhooks by Zapier catch hook. Your side verifies and reacts; nothing has to poll. That event is the trigger behind any Zap, relay or connector here, so it’s worth knowing the two reference pages before you wire one up:

  • Receiving webhooks — how to build the endpoint: verify the HMAC signature, answer the one-time registration challenge, and stay correct through retries and secret rotation. Deliveries are signed and at-least-once, so verify every one and deduplicate on the webhook-id header.
  • Webhook events — the contract: the full catalog of events you can subscribe to, the envelope and headers, and the signing scheme to check against.

Subscribe an endpoint under Settings → Webhooks, pick the event patterns you care about — for example Entitlement.* or MeteredUsage.OverageStatusChanged — and you have the trigger side of everything else in this section.