Zennopay Docs — Cross-border QR payments, one SDK

2026-07-29 — Canonical domain moved to `zennopay.com`

Docs, API, and Console now use zennopay.com. The canonical hosts are api.zennopay.com (production), api.sandbox.zennopay.com (sandbox), console.zennopay.com, and docs.zennopay.com. Every example, cURL snippet, and SDK default in these docs has been updated.
Nothing is switched off. The zennopay.in hosts — including api.zennopay.in and api.sandbox.zennopay.in — continue to be served for existing integrations. Published SDK versions that ship the .in base URL keep working unchanged; there is no forced migration and no cutover date.
No API changes. Endpoints, request/response shapes, HMAC signing, and the session/receipt token contracts are unchanged. This is a hostname change only.
Support email: support@zennopay.com (partner enquiries: partners@zennopay.com). Mail to the .in addresses still reaches us.

HMAC-only authentication. Partners now authenticate with HMAC only. There is no RSA key pair to generate, no iss/kid to register, no JWKS to publish, and no session JWT for you to sign. Your KYC + sanctions attestations move into the HMAC-signed create-intent body, and Zennopay mints the session token for you — returned as session_token
- session_expires_at (unix seconds) on the create response.
New API: POST /v1/payment_intents/{id}/session re-mints a fresh session token for an existing intent (drives the SDK’s refreshSession hook). Receipt tokens are likewise Zennopay-minted, via POST /v1/payment_intents/{id}/receipt_token (HMAC, no body; returns receipt_token + receipt_token_expires_at).
Rewritten: Authentication, Quickstart, and Build your session endpoint for the HMAC-only flow. The reference zennopay-partner-starter is v0.2.0 (HMAC-only; env ZENNOPAY_HMAC_KEY_ID + ZENNOPAY_HMAC_SECRET + ZENNOPAY_BASE_URL).
SDK surface: presentCheckout / presentSheet now take a sessionToken (was sessionJwt); the token is Zennopay-minted and opaque to you.
openapi.json and llms.txt updated for session_token, the re-mint endpoint, and the attestation body.

Redesigned home into a clean, task-first landing — a hero and product tiles (“Get started”, Make a payment, Reopen a receipt, Session endpoint, Testing, API reference), replacing the old “What is Zennopay” explainer.
Branding: the real Zennopay logo (light/dark) and favicon, refreshed brand color.
SEO: Open Graph and Twitter cards with a social image, plus per-page metadata and indexing.
Domain: all hosts moved to zennopay.in — production api.zennopay.in, sandbox api.sandbox.zennopay.in, and the partner Console at console.zennopay.in.

New: Reopen a receipt — you keep your own transaction-history list; mint a read-only, reusable, user-scoped receipt token (aud: zennopay-receipt) and call presentReceipt (iOS/Android 0.3.0, Flutter, React Native) to reopen the authoritative Zennopay receipt with its live status, pending-poll, and refunded messaging.
New API: GET /v1/payment_intents/:id/receipt — receipt-token bearer auth; cross-user 404 with no existence leak.
Build your session endpoint now documents receipt tokens alongside session JWTs, and the reference partner starter ships POST /receipt-token.

Docs: restructured into task-first navigation — the SDK guides now live under Make payments, with new Testing and Per-user limits pages and path redirects from every /sdks/* URL.
New: PaymentSheet overview — the native, in-process pay experience, with real captures from the sample wallet app.
Rewritten: iOS and Android SDK guides for the native PaymentSheet (presentCheckout). The beta hosted-checkout model (browser tab + URL-scheme redirect) is deprecated and removed; each page carries a migration callout.
New: Flutter (zennopay_flutter) and React Native (@zennopay/react-native) SDK guides.
New: Build your session endpoint — the partner-backend contract (create intent + mint session JWT) with a complete Node.js reference implementation.
Funds flow now includes a pre-fund → FBO → drawdown → local-rail payout diagram.
LLM-friendly docs: llms.txt index published; every page has a contextual “Copy page / View as Markdown / Open in ChatGPT / Open in Claude” menu.