CrossFin MCP Server

Name: CrossFin MCP Server
Author: io.github.bubilife1202

io.github.bubilife1202/crossfin

Repository Registry

What is the CrossFin MCP server?

AI agent access to Asian crypto markets. Korean exchange routing and x402 paid APIs.

How to install CrossFin

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

EVM_PRIVATE_KEY
secret
Base wallet private key for x402 USDC payments (only needed for paid tools)
CROSSFIN_API_URL
API base URL (default: https://crossfin.dev)
CROSSFIN_LEDGER_PATH
Local ledger file path (default: ~/.crossfin/ledger.json)

Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "crossfin": {
      "command": "npx",
      "args": [
        "-y",
        "crossfin-mcp"
      ],
      "env": {
        "EVM_PRIVATE_KEY": "<YOUR_EVM_PRIVATE_KEY>",
        "CROSSFIN_API_URL": "<YOUR_CROSSFIN_API_URL>",
        "CROSSFIN_LEDGER_PATH": "<YOUR_CROSSFIN_LEDGER_PATH>"
      }
    }
  }
}

Cursor

~/.cursor/mcp.json

{
  "mcpServers": {
    "crossfin": {
      "command": "npx",
      "args": [
        "-y",
        "crossfin-mcp"
      ],
      "env": {
        "EVM_PRIVATE_KEY": "<YOUR_EVM_PRIVATE_KEY>",
        "CROSSFIN_API_URL": "<YOUR_CROSSFIN_API_URL>",
        "CROSSFIN_LEDGER_PATH": "<YOUR_CROSSFIN_LEDGER_PATH>"
      }
    }
  }
}

Windsurf

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "crossfin": {
      "command": "npx",
      "args": [
        "-y",
        "crossfin-mcp"
      ],
      "env": {
        "EVM_PRIVATE_KEY": "<YOUR_EVM_PRIVATE_KEY>",
        "CROSSFIN_API_URL": "<YOUR_CROSSFIN_API_URL>",
        "CROSSFIN_LEDGER_PATH": "<YOUR_CROSSFIN_LEDGER_PATH>"
      }
    }
  }
}

VS Code

.vscode/mcp.json

{
  "servers": {
    "crossfin": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "crossfin-mcp"
      ],
      "env": {
        "EVM_PRIVATE_KEY": "<YOUR_EVM_PRIVATE_KEY>",
        "CROSSFIN_API_URL": "<YOUR_CROSSFIN_API_URL>",
        "CROSSFIN_LEDGER_PATH": "<YOUR_CROSSFIN_LEDGER_PATH>"
      }
    }
  }
}

Claude Code

claude mcp add crossfin --env EVM_PRIVATE_KEY=<YOUR_EVM_PRIVATE_KEY> --env CROSSFIN_API_URL=<YOUR_CROSSFIN_API_URL> --env CROSSFIN_LEDGER_PATH=<YOUR_CROSSFIN_LEDGER_PATH> -- npx -y crossfin-mcp