Nexchange — Free Cryptocurrency Exchange Pair Data (No Key)

TL;DR

Nexchange provides a REST API for discovering cryptocurrency exchange trading pairs, including current rates, minimum/maximum transaction limits, and exchange availability. The API is completely open with no authentication required, returning JSON-formatted data about which coins can be traded across which platforms. Useful for building comparison tools that find the best route for a given crypto trade.

Quick start: https://api.n.exchange/en/api/v1/pair/

No API key needed — just make a request!

How to Use This API

1. List All Available Trading Pairs

Returns all supported cryptocurrency pairs with rates and limits:

https://api.n.exchange/en/api/v1/pair/

The response includes base currency, quote currency, current rate, minimum/maximum amounts, and exchange name.

2. JavaScript — Browse Pairs

fetch('https://api.n.exchange/en/api/v1/pair/')
  .then(r => r.json())
  .then(pairs => {
    pairs.forEach(p => {
      console.log(`${p.base}/${p.quote}: ${p.rate} (min: ${p.min_amount_quote})`);
    });
  });

3. Python — Find Best BTC Rate

import requests

pairs = requests.get(
    'https://api.n.exchange/en/api/v1/pair/'
).json()

btc_pairs = [p for p in pairs if p.base == 'BTC']
for p in sorted(btc_pairs, key=lambda x: x['rate']):
    print(f"{p.quote}: {p.rate} @ {p.exchange}")

Try the pairs endpoint: https://api.n.exchange/en/api/v1/pair/

Try This URL Now

Frequently Asked Questions

What data does each trading pair include?: Each pair returns the base currency, quote currency, current exchange rate, minimum and maximum transaction amounts (in both base and quote), and the exchange where the pair is traded.
How often is the rate data updated?: Rates are updated in real-time as the exchange feeds change. The API serves as an aggregator across multiple connected exchanges.
Do I need an API key?: No. The Nexchange API is completely open and free. No registration or authentication required.
Can I filter pairs by specific currencies?: The API returns all pairs. You can filter client-side by checking the base and quote fields in the response array.
Which exchanges are supported?: Nexchange aggregates data from multiple cryptocurrency exchanges. The specific exchange name is included in each pair object as the exchange field.
What is the response format?: All responses are in JSON format. The API uses standard REST conventions with proper HTTP status codes for error handling.

API Details

API URL: https://api.n.exchange/en/api/v1/pair/
Documentation: n.exchange
Category: Finance
Authentication: Not Required
Geographic Coverage: Global — all cryptocurrency pairs

What You Can Build

Crypto arbitrage scanner comparing rates across multiple exchanges
Trade route finder that shows the best pair for converting between two coins
Portfolio rebalancing tool that finds optimal trading pairs
Exchange comparison dashboard showing rate differences for the same pair
Alert system that notifies when a pair's rate crosses a threshold