CrossFin — Cross-Border Crypto Routing Engine for AI Agents

# CrossFin > Cross-border crypto routing engine for AI agents. Routes capital across 14 Korean and global exchanges with x402 USDC micropayments. ## Docs - [Agent Guide](https://crossfin.dev/api/docs/guide): Complete onboarding guide for AI agents - [API Reference](https://docs.crossfin.dev/api): Full endpoint documentation - [OpenAPI Spec](https://crossfin.dev/api/openapi.json): Machine-readable API specification - [MCP Server](https://www.npmjs.com/package/crossfin-mcp): 16 tools for any MCP client ## Free Endpoints - [Route Spread Demo](https://crossfin.dev/api/arbitrage/demo): Top 3 Korean-vs-global price spreads - [Exchange List](https://crossfin.dev/api/route/exchanges): 14 supported exchanges and coins - [Fee Table](https://crossfin.dev/api/route/fees): Trading and withdrawal fees - [Exchange Prices](https://crossfin.dev/api/route/pairs): Live bridge coin prices - [Exchange Status](https://crossfin.dev/api/route/status): Network health - [Optimal Route](https://crossfin.dev/api/routing/optimal): Free routing graph data - [Service Registry](https://crossfin.dev/api/registry): 184+ discoverable services - [ACP Quote](https://crossfin.dev/api/acp/quote): Free routing quote (POST) ## Paid Endpoints (x402 USDC on Base) - Optimal Route Finding: $0.10 - Route Spread Index (13 pairs): $0.05 - Arbitrage Opportunities: $0.10 - Bithumb/Upbit/Coinone Orderbooks: $0.02 - USD/KRW Rate: $0.01 - KOSPI/KOSDAQ Indices: $0.03 - Morning Brief Bundle: $0.20 - Crypto Snapshot Bundle: $0.15 ## Discovery - [`.well-known/crossfin.json`](https://crossfin.dev/.well-known/crossfin.json): CrossFin discovery - [`.well-known/x402.json`](https://crossfin.dev/.well-known/x402.json): Payment discovery - [`.well-known/agent.json`](https://crossfin.dev/.well-known/agent.json): A2A Agent Card - [`.well-known/ai-plugin.json`](https://crossfin.dev/.well-known/ai-plugin.json): OpenAI plugin manifest - [`.well-known/glama.json`](https://crossfin.dev/.well-known/glama.json): Glama.ai ownersh

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