Understand and operate within Revel Systems' webhook subscription and delivery model
domain: developer.revelsystems.com · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Recognize there is no self-service REST endpoint to register webhook URLs — one receiving URL per event type must be supplied to Revel during manual onboarding, shared across all establishments of that integration
Distinguish which establishment/instance a given webhook call is for using headers such as X-Revel-Instance and X-Revel-Establishment-Id, since the URL itself is shared
Handle the documented event catalog (e.g. order.finalized, customer.created/updated, rewardcard.created, inout.stock, menu.updated, timesheet.created/updated/deleted, app.integration.changed, ping) rather than assuming arbitrary custom events
Respond with a 2XX status within 10 seconds over HTTPS/POST/JSON, since Revel retries on a fixed backoff schedule rather than indefinitely
Use the API-Platform GET external/message-log endpoint (JWT Bearer + Client-Id header) to inspect delivery failures, and external/integrations to see which establishments your app currently has access to
Known gotchas
Webhook endpoint registration is a manual, per-event, onboarding-time process, not a self-service subscribe/unsubscribe API call
By default the message log only stores failed deliveries, not successful ones — check filter options before relying on it as a full delivery audit trail
Retries stop after a fixed short window (roughly 4 tries over about 36 minutes); a receiver down longer than that will silently miss events with no further redelivery
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