Sumsub — Travel Rule integration

Travel Rule is an exchange of participant data between two VASPs about one transfer. Sumsub is the hub: you talk to Sumsub, Sumsub talks to the counterparty over whichever protocol you both speak.

The integration is small. What makes it fail in production is that most integrations build one half of it — they start exchanges but never finalise them, or they answer the first question and not the second, and nothing in the API complains. This recipe is organised around those omissions.

⚠️ Sandbox tokens only

Do not accept or use a production App Token here. Travel Rule acts on real transfers and real counterparty VASPs, and a test exchange sent to a live counterparty puts a real request in a real compliance queue. Insist on a sandbox pair from https://cockpit.sumsub.com/checkus/home?sbx=true — Connect Sumsub to your AI agent -> Build & configure -> Generate token. Token + secret are revealed once; copy both before closing the dialog.