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Version: v2

Introduction

Welcome to the Nexchange API documentation. The API lets you integrate instant crypto exchange functionality — including non-custodial DeFi swaps — into your application without managing order books or liquidity.

What you can build​

  • Instant swaps — crypto-to-crypto exchange with floating or fixed rates
  • DeFi orders — non-custodial cross-chain swaps, including RFQ fixed-rate and limit orders
  • Embedded exchange — a ready-made widget for browser integrations
  • Partner economics — referral attribution and dynamic markup

No end-user registration is required; orders are created for anonymous users and attributed to your partner account.

Base URL​

https://api.n.exchange/en/api/v2

All v2 endpoints require an API key — see Authentication. The machine-readable OpenAPI spec lives at api.n.exchange/docs/v2 (schema: /en/api/v2/schema/).

API versions​

VersionStatusDocs
v2Recommended for all new integrations — simplified flat responses, clearer namingThis site + Swagger UI
v1Legacy, still operationalSwagger UI · Migration guide

How an exchange works​

  1. Quote — GET /rate/ for the pair the user wants; show the price (Rates & Pricing).
  2. Create — POST /orders/ with the quote's rate_id; get back a deposit_address.
  3. Pay — the user sends funds to the deposit address within the payment window.
  4. Track — follow the order to COMPLETED via polling or webhooks; statuses are defined in Order Lifecycle.

The Quickstart walks this end-to-end in five minutes.

Support​