Polygon Io MCP Server: Install & Setup

Install Polygon Io in Claude Code

Claude Code

claude mcp add --transport http polygon-io https://gateway.pipeworx.io/polygon-io/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "polygon-io": {
      "url": "https://gateway.pipeworx.io/polygon-io/mcp"
    }
  }
}

Claude Code

claude mcp add polygon-io -- npx -y @pipeworx/mcp-polygon-io

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "polygon-io": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-polygon-io"
      ]
    }
  }
}

Massive (formerly Polygon.io) MCP.

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Local + Remote. Can run locally or be used as a hosted remote server.

Run: claude mcp add --transport http polygon-io https://gateway.pipeworx.io/polygon-io/mcp

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