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API Changelog
API Changelog
Developer Resources — manage api changelog
📋 API Changelog
Track all API updates, changes, and deprecationsv1.3.0 Open Developer Portal Jul 26, 2026
The API contract is now fully readable without an account, and the published webhook catalog matches what the platform actually sends.
✨ Changes:
- OpenAPI spec, Swagger console, and Postman collection are reachable anonymously; they previously returned 403
- Changelog, webhook catalog, and API tester no longer redirect anonymous visitors to login
- Postman collection is generated from the live endpoint registry instead of a stale static file
- Webhook catalog rewritten to the 17 events the platform actually dispatches, with payload examples taken from the delivery code
- Corrected the documented replay-protection header to X-Request-ID and the canonical signing string to METHOD|PATH|TIMESTAMP|BODY
🚫 Deprecated:
- Documentation previously referenced an X-Nonce header. The API has always read X-Request-ID; update any integration that was written against the incorrect docs.
v1.2.0 Developer Experience Improvements Nov 05, 2025
Machine-readable contract and self-service developer tooling.
✨ Changes:
- OpenAPI 3.0 specification generated from the live endpoint registry
- Interactive Swagger console
- Public API status page
- Webhook event catalog
- API changelog
v1.1.0 Enhanced Security & Webhooks Mar 15, 2025
Hardened authentication and introduced outbound webhook delivery.
✨ Changes:
- Per-client IP allowlisting
- Outbound webhook delivery with HMAC-SHA256 signatures and five retry attempts
- Idempotency keys on write endpoints
- Per-client rate limiting
- Transaction replay for debugging
v1.0.0 Initial Release Jan 01, 2025
First stable release of the NXT Banking API with the core money-movement rails.
✨ Changes:
- Payout API with IMPS, NEFT, and RTGS support
- DMT API for domestic money transfers
- UPI Collection API
- HMAC-SHA256 request signing over METHOD|PATH|TIMESTAMP|BODY
- Sandbox environment with per-merchant credentials