Webhooks

Register an HTTPS endpoint (Webhooks page) for verification.completed and monitor.alert events. Every delivery is signed:

X-SPP2-Signature: sha256=<hex hmac>
X-SPP2-Event: verification.completed

{"event": "verification.completed", "data": {"verification_id": "...", "commercial_verdict": "SUPPORTED"}}

Delivery is attempted once, synchronously, with a short timeout. A failed delivery is recorded (visible on the Webhooks page) and never breaks the request that triggered it.