Hypermid partner demo sandbox
A merchant server creating checkout, deposit and withdrawal sessions with @hypermid/sdk, then framing the hosted payment page. The secret key never leaves the server.
1 — Create the session (server side)
Bill a payer a fixed amount. You receive exactly this token on this chain; the payer covers the route. The recipient must be on your payout allowlist.
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2 — Session
Nothing yet.
Webhooks
Register an endpoint, then watch deliveries arrive. A webhook is the trigger to act; the session read is the evidence.
Registered endpoints
Registration needs an https URL that resolves publicly — it is re-checked at delivery time.
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Subscribes to all nine events — the three the guide lists, plus expiry and failure.
Live deliveries
Rejections are shown too. A bad signature that leaves no trace looks exactly like nothing being sent, which is the hardest webhook failure to diagnose.
Nothing yet. Press test on an endpoint above.