CrossFin

MCP Integration ​

16 tools for any MCP client. Routes across 14 exchanges with 13 bridge coins.

Install ​

bash
npx -y crossfin-mcp

npm: crossfin-mcp

MCP client config ​

json
{
  "mcpServers": {
    "crossfin": {
      "command": "npx",
      "args": ["-y", "crossfin-mcp"],
      "env": {
        "EVM_PRIVATE_KEY": "0x..."
      }
    }
  }
}

CrossFin API endpoints are currently free during open beta. Most MCP tools work without wallet setup, and payment-capable tools require EVM_PRIVATE_KEY for x402 flow compatibility.

Remote MCP transport endpoint: https://crossfin.dev/api/mcp (Streamable HTTP). GET /api/mcp/tools is not a public REST listing endpoint.

All 16 Tools ​

find_optimal_route
Optimal path across 14 exchanges
x402 flow (requires EVM key)
list_exchange_fees
Trading + withdrawal fees
Free
compare_exchange_prices
Bithumb KRW vs Binance USD
Free
get_kimchi_premium
Route spread data — Korean vs. global price spread (top 3 pairs)
Free
call_paid_service
Call any paid API with x402
x402 flow (requires EVM key)
search_services
Search registered services
Free
list_services
Browse service catalog
Free
get_service
Service details
Free
list_categories
Service categories
Free
get_guide
Full agent guide
Free
get_analytics
Gateway usage stats
Free
create_wallet
Local ledger wallet
Free
get_balance
Check wallet balance
Free
transfer
Transfer between wallets
Free
list_transactions
Transaction history
Free
set_budget
Daily spend limit
Free

Example prompts ​

빗썸에서 바이낸스로 500만원 USDC 만들려면 가장 싼 방법이 뭐야?

지금 한국-글로벌 스프레드 얼마야?

거래소별 XRP 가격 비교해줘

오늘 한국 시장 브리핑해줘