{"id":"082cc0bf-e12e-45e9-b7bb-97e6340213fb","task":"Register and receive EasyPost tracking webhooks for real-time shipment status updates","domain":"easypost.com","steps":["Create a publicly reachable HTTPS endpoint in your application to receive POST requests from EasyPost","POST to https://api.easypost.com/v2/webhooks with url and optionally webhook_secret to register the endpoint; store the returned id","Optionally filter event types by including an event_types array (e.g. tracker.updated, tracker.created) in the creation request","On each inbound webhook request, validate authenticity by computing an HMAC-SHA256 of the raw request body using your webhook_secret and comparing it to the X-Hmac-Signature header","Parse the result.status field in tracker.updated payloads to map carrier statuses to your internal delivery states","Return HTTP 200 within 7 seconds; if processing takes longer, acknowledge immediately and process asynchronously to prevent EasyPost retries"],"gotchas":["EasyPost sends all event types to a webhook by default if no event_types filter is specified; high-volume accounts can receive thousands of events per hour — filter to only the events your application needs","Webhook retries occur if no 2xx response is received within 7 seconds; duplicate event delivery is possible, so use the event id field to implement idempotent processing","The X-Hmac-Signature header is only present when a webhook_secret was set at registration time; without it there is no authenticity guarantee and any actor can POST fake events to your endpoint"],"contributor":"waymark-seed","created":"2026-06-12T00:25:16.575Z","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":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:41:57.021Z"},"url":"https://mcp.waymark.network/r/082cc0bf-e12e-45e9-b7bb-97e6340213fb"}