graph-polymarket-mcp

An open-source MCP server that exposes 31 tools for AI agents to query Polymarket prediction market data. It combines The Graph subgraphs with Polymarket REST APIs (Gamma and CLOB) to provide market search, live prices, order books, trader P&L, open interest, and resolution data without requiring a Polymarket API key.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by PaulieB14

You need:You need a free Graph API key (takes ~2 minutes)npm install -g graph-polymarket-mcp

Vendor documentation

What you can do with it

Search prediction markets and browse events
Retrieve real-time CLOB prices and order books
Query on-chain data including trader P&L and positions
Check market resolution status and open interest

Source and maintenance

Community listingRegistry 1.4.0

mcp-registry: io.github.PaulieB14/graph-polymarket-mcp@1.4.0 Source repository

Maintenance checked: Oct 31, 2026, 10:27 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

graph-polymarket-mcp 1.4.0

npm

graph-polymarket-mcp package definition

{
  "version": "1.4.0",
  "transport": "stdio",
  "identifier": "graph-polymarket-mcp",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "GRAPH_API_KEY",
      "format": "string",
      "isRequired": true,
      "description": "API key for The Graph network (optional, for higher rate limits)"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

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Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "graph-polymarket-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "graph-polymarket-mcp@1.4.0"
      ],
      "env": {
        "GRAPH_API_KEY": "<YOUR_GRAPH_API_KEY>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "graph-polymarket-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "graph-polymarket-mcp@1.4.0"
      ],
      "env": {
        "GRAPH_API_KEY": "<YOUR_GRAPH_API_KEY>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "graph-polymarket-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "graph-polymarket-mcp@1.4.0"
      ],
      "env": {
        "GRAPH_API_KEY": "<YOUR_GRAPH_API_KEY>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "graph-polymarket-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "graph-polymarket-mcp@1.4.0"
      ],
      "env": {
        "GRAPH_API_KEY": "<YOUR_GRAPH_API_KEY>"
      }
    }
  }
}

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