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Cross-DEX Prices & Spreads

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

Source code Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package arb-dex-mcp
Claude Code 
claude mcp add cross-dex-prices-spreads -e 'RAPIDAPI_KEY=<your rapidapi_key>' -e 'ARB_DEX_TIMEOUT_MS=<ARB_DEX_TIMEOUT_MS>' -- npx -y arb-dex-mcp@1.0.1
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "cross-dex-prices-spreads": {
            "command": "npx",
            "args": [
                "-y",
                "arb-dex-mcp@1.0.1"
            ],
            "env": {
                "RAPIDAPI_KEY": "<your rapidapi_key>",
                "ARB_DEX_TIMEOUT_MS": "<ARB_DEX_TIMEOUT_MS>"
            }
        }
    }
}

Environment variables

  • 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.

Frequently asked questions

What is Cross-DEX Prices & Spreads?

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

How do I install Cross-DEX Prices & Spreads?

It runs on your machine. In Claude Code: claude mcp add cross-dex-prices-spreads -e 'RAPIDAPI_KEY=<your rapidapi_key>' -e 'ARB_DEX_TIMEOUT_MS=<ARB_DEX_TIMEOUT_MS>' -- npx -y arb-dex-mcp@1.0.1. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Cross-DEX Prices & Spreads need an API key?

Yes. It expects RAPIDAPI_KEY, which you set in its configuration.

Is Cross-DEX Prices & Spreads open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains Cross-DEX Prices & Spreads?

It is published by donnywin85. AI.tn lists it but does not maintain or endorse it.

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