Datadash
Get your API key

Ask your AI agent what Smart Money is doing

Add the Datadash MCP server to Claude Code, Cursor, Codex or VS Code. Ask in plain English; your assistant writes the queries.

Get your API keySee the steps

Connect it in three steps

Datadash hosts the server, so there is nothing to install and nothing to run.

  1. Create an API key

    Open Settings, then API Keys, and create one. It is shown once. Make a separate key for your assistant, so you can revoke that one on its own.

    Open API Keys

  2. Add the server to your client

    One address, over Streamable HTTP, with your key in the X-Api-Key header.

    https://api.datadash.xyz/mcp

    Claude Code

    Terminal
    claude mcp add --scope user --transport http datadash \
  https://api.datadash.xyz/mcp \
  --header "X-Api-Key: <your-api-key-here>"

    Scope user makes it available in every project. Start a new session, open the MCP menu, and datadash is listed as connected.

    Cursor

    ~/.cursor/mcp.json
    {
  "mcpServers": {
    "datadash": {
      "url": "https://api.datadash.xyz/mcp",
      "headers": {
        "X-Api-Key": "<your-api-key-here>"
      }
    }
  }
}

    Use .cursor/mcp.json instead to limit it to one project. A green dot next to datadash in Cursor Settings means it is connected.

    Codex

    ~/.codex/config.toml
    [mcp_servers.datadash]
url = "https://api.datadash.xyz/mcp"
http_headers = { "X-Api-Key" = "<your-api-key-here>" }

    Codex cannot set a custom header from the command line, so it goes in the file. To keep the key out of it, use env_http_headers and export the key in your shell.

    VS Code

    .vscode/mcp.json
    {
  "inputs": [
    {"type": "promptString", "id": "datadash-api-key", "description": "Datadash API key", "password": true}
  ],
  "servers": {
    "datadash": {
      "type": "http",
      "url": "https://api.datadash.xyz/mcp",
      "headers": {"X-Api-Key": "${input:datadash-api-key}"}
    }
  }
}

    The inputs entry has VS Code ask for the key once and store it, so it never sits in the file. Select Start above the datadash entry, then use Chat in agent mode.

    Other clients

    Most clients
    {
  "mcpServers": {
    "datadash": {
      "type": "http",
      "url": "https://api.datadash.xyz/mcp",
      "headers": {"X-Api-Key": "<your-api-key-here>"}
    }
  }
}

    Any client that speaks Streamable HTTP and can send a custom header will work. The server is stateless: every request is authenticated on its own, and no session carries over between them.

  3. Ask your first question

    Start a new chat and ask about the data. Your assistant works out the table, the fields and the filters itself.

    • Who are the top 10 wallets by realized PnL in crypto markets?
    • What is smart money positioned on in the biggest active politics markets?
    • Which markets resolving in the next 30 days have the biggest smart money edge among the top 1,000 traders?
    • Build a cohort of wallets with over $100k in volume and a win rate above 60%, then tell me what they are holding.

Your questions, answered

What the MCP server reaches, and what it does not.

Do I need a Datadash account?

Yes. The server authenticates with a Datadash API key, which you create under Settings, API Keys. The limits of your Datadash plan apply to tool calls too.

What can the assistant do with my key?

Everything your account can do, including creating, changing and deleting your cohorts. Create a key just for your MCP client, so you can revoke it without affecting anything else.

Which AI tools can connect to it?

Any client that speaks Streamable HTTP and can send a custom header. Claude Code, Cursor, Codex and VS Code all can, and each has its own tab in the setup above.

Is it the same data as the app?

Yes. A tool call runs through the same filters, validation and authentication as the equivalent REST request, so anything you ask here you can reproduce with curl.

Where does the data come from?

Datadash indexes Polymarket trades directly from the Polygon blockchain, and calculates PnL, ranks, Signals and Smart Money from them. Market names and images come from Polymarket.

Is it affiliated with Polymarket?

No. Datadash is an independent company. The MCP server is not affiliated with or endorsed by Polymarket.