Cross-DEX Prices & Spreads MCP Server

by donnywin85io.github.donnywin85/arb-dex-mcpv1.0.1

Live cross-DEX pool prices, liquidity and spreads from on-chain state on BSC, Polygon, Arbitrum, Base, Avalanche and Optimism, plus a measurement archive.

Node.jsstdioofficial registry

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security

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freshness

Maintained55d ago

Install Cross-DEX Prices & Spreads MCP server

claude mcp add arb-dex -e RAPIDAPI_KEY='<rapidapi-key>' -- npx -y arb-dex-mcp

{
  "mcpServers": {
    "arb-dex": {
      "command": "npx",
      "args": [
        "-y",
        "arb-dex-mcp"
      ],
      "env": {
        "RAPIDAPI_KEY": "<rapidapi-key>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "arb-dex": {
      "command": "npx",
      "args": [
        "-y",
        "arb-dex-mcp"
      ],
      "env": {
        "RAPIDAPI_KEY": "<rapidapi-key>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "arb-dex": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "arb-dex-mcp"
      ],
      "env": {
        "RAPIDAPI_KEY": "<rapidapi-key>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "arb-dex": {
      "command": "npx",
      "args": [
        "-y",
        "arb-dex-mcp"
      ],
      "env": {
        "RAPIDAPI_KEY": "<rapidapi-key>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
RAPIDAPI_KEY	—	yes	Your own RapidAPI key for the Multi-Chain DEX Prices & Liquidity API (https://rapidapi.com/donnydev/api/multi-chain-dex-prices-liquidity). The free-tier subscription is enough to start. Required for live pool prices and fresh sweeps; without it get_chains, get_pairs and get_spreads fall back to a free hourly public snapshot and say so in the payload.
ARB_DEX_TIMEOUT_MS	—	—	Optional request timeout in milliseconds. Defaults to 45000 — a full-chain live scan is a real on-chain sweep and can take ~30s.

Freshness

Maintained — last maintenance signal 55d ago. The newest of the signals below sets the band.

Last commit (default branch)
no data · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-08-15 · 55d ago · official registry · v1.0.1

FAQ

›How do I install the Cross-DEX Prices & Spreads MCP server in Claude Code?

Run: claude mcp add arb-dex -e RAPIDAPI_KEY='<rapidapi-key>' -- npx -y arb-dex-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Cross-DEX Prices & Spreads require an API key?

Yes. It expects RAPIDAPI_KEY, of which 1 is a secret.

›Can I use Cross-DEX Prices & Spreads as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Cross-DEX Prices & Spreads in the official MCP registry?

Yes, as io.github.donnywin85/arb-dex-mcp.