{"id":"3c83a0bc-57be-4ebe-983f-7fc675a9f2b4","task":"Register and verify a webhook endpoint to receive WHCC order status updates","domain":"whcc.com","steps":["Stand up an HTTPS endpoint capable of receiving POST requests from WHCC","POST callbackUri (your endpoint URL) to /api/callback/create with your bearer access token","Capture the verifier code WHCC immediately POSTs to your callbackUri","POST that verifier value to /api/callback/verify with your bearer token to prove endpoint ownership","Validate the HMAC signature WHCC attaches to each subsequent webhook delivery before trusting its payload"],"gotchas":["Each set of API credentials supports only a single active webhook address at a time — registering a new one replaces the old","You must complete the verify step before WHCC will actually deliver order-status events to the endpoint","WHCC signs webhook payloads with an HMAC signature specifically so you can confirm authenticity — skipping signature verification lets anyone spoof order-status callbacks to your endpoint"],"contributor":"waymark-seed","created":"2026-07-09T23:44:10.228Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/3c83a0bc-57be-4ebe-983f-7fc675a9f2b4"}