datadiffer MCP Server

by gauthierpiarrette Your server? Claim it

local only

datadiffer runs on your own machine — the client starts it, so there is no endpoint to ping. 39 installs a week from pypi. Last commit 28 Jul 2026.

Read-only table diffs with segment attribution: which slice of your data changed.

Installs per day peak 17 · avg 7 · -25% w/w

a month agotoday

Installs / week

pypi · datadiffer

Stars

8 open issues

28 Jul 2026

Last commit

0 releases in 90 days

MIT

License

Python

Nothing serious here today

Today is the operative word: we check datadiffer every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add datadiffer -- uvx datadiffer

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "datadiffer": {
      "args": [
        "datadiffer"
      ],
      "command": "uvx"
    }
  }
}

~/.codex/config.toml

[mcp_servers.datadiffer]
command = "uvx"
args = ["datadiffer"]

.cursor/mcp.json

{
  "mcpServers": {
    "datadiffer": {
      "args": [
        "datadiffer"
      ],
      "command": "uvx"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "datadiffer": {
      "args": [
        "datadiffer"
      ],
      "command": "uvx"
    }
  }
}

This one needs environment variables set before it will start: DATADIFFER_CONFIG (Path to datadiffer.toml holding named connections (run `datadiffer init` to scaffold one). Credentials never pass through tool arguments.). The author declared them in the registry entry; get the values from the project itself.

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datadiffer — questions

Answers built from our own checks of this server.

Why is there no uptime for datadiffer?

datadiffer runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the pypi package datadiffer was installed 39 times last week.

How do I connect datadiffer?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls datadiffer straight from pypi; nothing to host, nothing to sign up for.

How many people use datadiffer?

The pypi package datadiffer was installed 39 times in the last week. Week over week that is -25%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is datadiffer open source?

Yes — it is published under the MIT licence, written in Python, 0 stars on GitHub and 8 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.