datatomcp MCP server

Turn a CSV or Google Sheet into a remote MCP server your AI agents can query.

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datatomcp is a hosted MCP server for your tabular data. Upload a CSV, paste a CSV link, or pick a Google Sheet. Your agent (Claude, ChatGPT, Cursor and others) can then filter, group and total the rows. The numbers are computed by a database, not estimated by the model.

• Hosted. Nothing to install or run. One URL works in every client that supports remote MCP servers.
• OAuth sign-in. No API key to paste into your agent. You can revoke access at any time.
• Exact results. Counts, sums and averages come from DuckDB. Every result says which version of the dataset it came from.
• Private Google Sheets. You pick the sheet in Google's file picker, and datatomcp can read that file only. Pro syncs it every hour.
• Import report. Bad lines, numbers stored as text and mixed date formats are reported before any agent sees the data.
• Read-only. Agents can query your data, but they can't change it or run raw SQL.
• Hosted in the EU. Your data is never sent to AI providers or used for training.

This repository holds the public documentation and client configuration. The service itself runs at app.datatomcp.com.

Server

Quick start

1. Sign up at app.datatomcp.com (free, no card).
2. Add a dataset: upload a CSV, paste a link, or choose a Google Sheet.
3. Add the server to your client (below), sign in when asked, and ask a question about your data.

Tools

Filters support eq, neq, gt, gte, lt, lte, in, notin, contains, startswith, between, isnull and notnull.

Client setup

Claude (Claude.ai and Claude Desktop)

Settings → Connectors → Add custom connector. Paste https://app.datatomcp.com/mcp, name it datatomcp, connect, and allow access.

Claude Code

claude mcp add --transport http datatomcp https://app.datatomcp.com/mcp

Then run /mcp, choose datatomcp and sign in.

ChatGPT

Settings → Apps & Connectors → Advanced, and turn on developer mode. Create a connector with the URL above and OAuth authentication, then sign in.

Cursor

Settings → MCP → Add new server. Choose type HTTP and use the URL above. Cursor asks you to log in the first time.

VS Code

.vscode/mcp.json:

{
  "servers": {
    "datatomcp": { "type": "http", "url": "https://app.datatomcp.com/mcp" }
  }
}

Windsurf

~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "datatomcp": { "serverUrl": "https://app.datatomcp.com/mcp" }
  }
}

Cline

Shortened. The full README is on GitHub.