Polygon)

@polygon-io · github.com/polygon-io/mcp_polygon

) - An MCP server that provides access to Polygon.io financial market data APIs for stocks, indices, forex, options, and more.

ClaimedWeb & APIsstdioToolslocal auth

GitHub

Install one command

terminal

$ npx @modelcontextprotocol/inspector uv --directory /path/to/mcp_massive run mcp_massive

Or add it with the Claude CLI: claude mcp add polygon-io-mcp-polygon

Tools exposed 5 tools

search_endpoints

max_results

call_api

store_as

query_data

Configuration generate & copy

MASSIVE_API_KEY

POLYGON_API_KEY

MCP_TRANSPORT

Values are filled in locally in your browser — nothing is sent anywhere.

claude_desktop_config.json

{
  "mcpServers": {
    "polygon-io-mcp-polygon": {
      "command": "npx",
      "args": ["@modelcontextprotocol/inspector", "uv", "--directory", "/path/to/mcp_massive", "run", "mcp_massive"],
      "env": {
        "MASSIVE_API_KEY": "<your-massive-api-key>",
        "POLYGON_API_KEY": "<your-polygon-api-key>",
        "MCP_TRANSPORT": "<your-mcp-transport>"
      }
    }
  }
}

Paste the Claude Desktop snippet under mcpServers in your config, then restart Claude Desktop — or run the Claude Code command in your terminal.

Polygon)

Install one command

Tools exposed 5 tools

Configuration generate & copy

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