Cross-DEX Prices & Spreads MCP Server

io.github.donnywin85/arb-dex-mcp

Repository Registry

What is the Cross-DEX Prices & Spreads MCP server?

Live cross-DEX pool prices, liquidity and spreads on 6 EVM chains, read from on-chain pool state.

How to install Cross-DEX Prices & Spreads

Copy-paste configuration for popular MCP clients.

transport: stdio

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

Environment / auth

RAPIDAPI_KEY
secret
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.

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

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