mcp-server-diff-python

An MCP server for obtaining text differences between two strings. This server leverages Python’s standard library difflib to efficiently generate and provide differences between two texts in Unified diff format, making it ideal for text comparison and version control purposes.

Features

Tools

The server provides a single tool:

• get-unified-diff: Get differences between two texts in Unified diff format
  • Arguments:
    • string_a: Source text for comparison (required)
    • string_b: Target text to compare against (required)
  • Return value: A string containing the differences in Unified diff format

Usage

Claude Desktop

Using with Claude Desktop To use with Claude Desktop, add the server config:

On MacOS: ~/Library/Application\ Support/Claude/claude_desktop_config.json
On Windows: %APPDATA%/Claude/claude_desktop_config.json

"mcpServers": {
  "mcp-server-diff-python": {
    "command": "uvx",
    "args": [
      "mcp-server-diff-python"
    ]
  }
}

or Add the following configuration:

git clone https://github.com/tatn/mcp-server-diff-python.git
cd mcp-server-diff-python
uv sync
uv build

"mcpServers": {
  "mcp-server-diff-python": {
    "command": "uv",
    "args": [
      "--directory",
      "path\\to\\mcp-server-diff-python",
      "run",
      "mcp-server-diff-python"
    ]
  }
}

Development

Debugging

You can start the MCP Inspector using npxwith the following commands:

npx @modelcontextprotocol/inspector uvx mcp-server-diff-python

npx @modelcontextprotocol/inspector uv --directory path\to\mcp-server-diff-python run mcp-server-diff-python