CrossFin

Quickstart ​

Start in under 2 minutes with free endpoints across 14 exchanges (Bithumb, Upbit, Coinone, GoPax, bitFlyer, WazirX, bitbank, Indodax, Bitkub, Binance, OKX, Bybit, KuCoin, Coinbase).

Open beta notice: Endpoints that are normally paid are temporarily free. No x402 payment is currently required.

Step 1: Check health ​

bash
curl https://crossfin.dev/api/health

Step 2: Explore exchange network ​

bash
curl https://crossfin.dev/api/route/exchanges
bash
curl https://crossfin.dev/api/route/status
bash
curl "https://crossfin.dev/api/route/fees?coin=XRP"

Returns all 14 exchanges with supported coins, online status, and fee schedules.

Step 3: Free arbitrage preview ​

bash
curl https://crossfin.dev/api/arbitrage/demo

Top 3 route spread pairs with POSITIVE_SPREAD/NEUTRAL/NEGATIVE_SPREAD indicators.

Step 4: Free ACP routing quote ​

bash
curl -X POST https://crossfin.dev/api/acp/quote \
  -H "Content-Type: application/json" \
  -d '{"from":"bithumb:KRW","to":"binance:USDC","amount":5000000}'

Returns optimal route with bridge coin, fees, and alternatives. No payment required.

Step 5: Live optimal route graph data (free) ​

bash
curl "https://crossfin.dev/api/routing/optimal?from=bithumb:KRW&to=binance:USDC&amount=5000000&strategy=cheapest"

Returns live optimal route + alternatives with real exchange fee table from D1.

Step 6: Full optimal route ​

GET /api/premium/route/find?from=bithumb:KRW&to=binance:USDC&amount=5000000&strategy=cheapest

Full route analysis. Returns complete step-by-step route with all alternatives and fee breakdown. Normally paid ($0.10), currently free during open beta.