datadiffer

Overview

datadiffer is a Model Context Protocol server that performs read-only table diffs with segment attribution, showing you exactly which slice of your data changed. AI assistants can use datadiffer as a set of callable tools, letting Claude, Cursor, and other MCP clients analyze data differences without manual copy-pasting between applications.

The server runs locally via the uvx command to install the datadiffer Python package, which speaks MCP over stdio on your machine. No credentials or authentication are required — it works out of the box. Version v0.1.0 is available now under the MIT license, with full source code at gauthierpiarrette/datadiffer on GitHub.

datadiffer is listed in the Database category on mcp.site and works with all MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, and Zed. If you maintain datadiffer, claim this listing to verify ownership and keep the information current.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "datadiffer": {
      "command": "uvx",
      "args": [
        "datadiffer"
      ]
    }
  }
}