MCP.Market

Cross-DEX Prices & Spreads MCP server

by donnywin85·io.github.donnywin85/arb-dex-mcp·v1.0.1
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Live cross-DEX pool prices, liquidity and spreads on 6 EVM chains, read from on-chain pool state.

B78/100grade B
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Safety scan
B78/100

full report

Adoption
Growing

0 stars73 downloads/wk

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Cross-DEX Prices & Spreads tools (6)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • get_chains

    List every blockchain this API covers, with its chain ID, native asset, default trading pair, the token tickers it prices, and the DEX venues it reads (both Uniswap-v2-style pools and Uniswap-v3-style concentrated-liquidity pools). Call this first to discover valid `chain` values for the other tools.

  • get_history

    Time series for a single pair from this API's measurement archive: per-venue price and liquidity points, and the GROSS cross-venue spread computed from those same measured venues, over a 24h, 7d or 30d window.

  • get_history_summary

    Describe the coverage of this API's own measurement archive before you query it: how many rows exist, how many distinct pairs are tracked, which chains have been seen, the first and last observation timestamps, the span in hours, and the retention policy.

  • get_pairs

    Show what is queryable on a single chain: the token tickers the API prices, the DEX venues it reads, and the chain default pair. A `pair` for get_prices is written as TOKEN_A/TOKEN_B from these tickers (first symbol is the base, second is the quote) — any ERC-20 contract address on the chain also works in place of a ticker.

  • get_prices

    Live price of one trading pair at EVERY DEX venue on a chain that holds a pool for it, read directly from pool state at a stated block number. Returns per-venue price (quote token per 1 base token), pool reserves, pool TVL in USD and the venue fee tier; plus the best bid/ask venues, the raw mid spread in basis points, aggregate liquidity, and the cross-DEX gross spread with its optimal trade size.

  • get_spreads

    Sweep a whole chain and rank its cross-venue price dislocations, each with the buy venue, sell venue, spread in basis points, the optimal trade size, and the gross USD that size would capture.

Public scan report

scanner v0.1.10 · 2026-11-03 · same rubric, same numbers if you re-run it

no findings
  • Code scan5 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitystatic API keys via environment variables6/15
  • Maintenancelast push 74 days ago12/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 78/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Cross-DEX Prices & Spreads compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
78/100
higher than 57% of 48,255 servers
Tools
6
the typical server has 7
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
Downloads a week
73
more than 55% of 12,191 servers with a package

What its tools let an agent do: 6 read

Install Cross-DEX Prices & Spreads in Claude Code, Cursor or VS Code

Runs npx -y arb-dex-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add arb-dex-mcp -- npx -y arb-dex-mcp
Add to Cursor

What the publisher says

From the Cross-DEX Prices & Spreads repository's README, as published. We do not edit it. Read it on GitHub

arb-dex-mcp

Live cross-DEX crypto prices for your AI agent — per-venue pool price, pool liquidity and the gross cross-venue spread on 6 EVM chains, read straight from on-chain pool state.

Chains: BSC · Polygon · Arbitrum · Base · Avalanche · Optimism. Venues: PancakeSwap (v2 + v3), Uniswap v3, SushiSwap, QuickSwap, Biswap, ApeSwap, BaseSwap, Trader Joe, Pangolin — every v2-style pool and every v3 fee tier separately, because a $12k 1% pool and a $19M 0.01% pool are not the same quote.

Nothing is modelled, estimated or backfilled. Every payload states its own block number and carries its own scope note, so an agent that quotes a figure also has the caveats attached to it.

Works with no API key against a free hourly public snapshot. Docs · npm

Quickstart

Nothing to clone or build. Your MCP client fetches the package. Requires Node 18+.

Claude Desktop

claudedesktopconfig.json — macOS ~/Library/Application Support/Claude/, Windows %APPDATA%\Claude\:

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

Restart Claude Desktop; the six tools appear under the connectors icon. Drop the env block entirely to run keyless — the server still starts and the free-snapshot tools still answer.

Claude Code

claude mcp add arb-dex --env RAPIDAPI_KEY=your-rapidapi-key-here -- npx -y arb-dex-mcp

Keyless:

claude mcp add arb-dex -- npx -y arb-dex-mcp

Then /mcp to confirm it connected.

Cursor

~/.cursor/mcp.json (global) or .cursor/mcp.json (per project):

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

Cursor → Settings → MCP shows the server and its tools once the file is saved.

Any other MCP client

Same three facts: command npx, args ["-y", "arb-dex-mcp"], transport stdio, optional env RAPIDAPI_KEY.

Try it

Real prompts, and the real shape that comes back. Payloads below were measured live on 2026-08-15; they are trimmed for width but nothing is invented.

1. "What is WBNB/USDT trading at on every BSC venue right now?"

get_prices reads every pool holding the pair — v2 pairs and each v3 fee tier separately — at one stated block:

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Cross-DEX Prices & Spreads: common questions

Is Cross-DEX Prices & Spreads MCP server safe?
Mostly: it is graded B (78/100). Read the Cross-DEX Prices & Spreads safety report
How do I install Cross-DEX Prices & Spreads?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Cross-DEX Prices & Spreads need an API key?
Yes. The registry entry asks for RAPIDAPI_KEY.
Is Cross-DEX Prices & Spreads maintained?
The last commit was 75 days ago (2026-08-21). The latest release is v1.0.1.
What can I use instead of Cross-DEX Prices & Spreads?
Servers from other publishers that do the same job: Concord MCP server.
How does Cross-DEX Prices & Spreads compare with other MCP servers?
safety score 78/100 (higher than 57% of 48,255 servers); tools 6 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

Alternatives to Cross-DEX Prices & Spreads

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