Unified Diff MCP Server

@gorosun

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NOASSERTION

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stdio

作者

gorosun

关于 Unified Diff MCP Server

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Unified Diff MCP Server 配置

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该服务器的 README 中没有可解析的 MCP 配置块，请前往代码仓库查看安装说明。

代码仓库

Unified Diff MCP Server 工具

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概览

What is Unified Diff MCP Server?

A server for Claude Desktop that transforms code diffs into beautiful HTML visual comparisons using diff2html. It supports GitHub Gist integration for instant sharing and local file output (PNG/HTML). Designed for developers doing code reviews or documentation.

How to use Unified Diff MCP Server?

Install via Smitherly (bunx @smithery/cli install @gorosun/unified-diff-mcp) or manually: clone repo, install Bun, run bun install, then configure Claude Desktop with the unified-diff-mcp MCP server, setting environment variables such as GITHUB_TOKEN. Use the tools visualize_diff_html_content (browser display & sharing) or visualize_diff_output_file (local file storage).

Key features of Unified Diff MCP Server

Beautiful HTML diff visualization using diff2html
GitHub Gist integration for instant sharing
Local file output in PNG or HTML format
Auto-delete functionality for temporary diffs (1–1440 minutes)
Multi-level security (Low/Medium/High) for shared diffs
Cross-platform support (Windows, macOS, Linux)

Use cases of Unified Diff MCP Server

Quick preview and share a diff via browser-ready URLs
Save a diff as an HTML or PNG file for documentation
Securely share sensitive diffs with password protection and auto-delete
Side-by-side code review inside Claude Desktop
Image export of diffs for presentations or reports

常见问题

What tools are available and what do they do?

Two tools: `visualize_diff_html_content` creates a GitHub Gist with an HTML preview URL; `visualize_diff_output_file` saves a local HTML or PNG file.

What runtimes and dependencies are required?

Requires Bun runtime and clone of the Git repository. Key dependencies include diff2html (HTML diff), playwright-core (browser automation), and @modelcontextprotocol/sdk.

Where are diffs stored, and how long do they persist?

Diffs can be stored as local files (PNG/HTML) or as temporary GitHub Gists. Gists auto-delete after a configurable period (default 30 minutes, max 1440 minutes).

How does authentication work for GitHub Gist integration?

A GitHub Personal Access Token with `gist` scope is required. Set it as the `GITHUB_TOKEN` environment variable. If the token is unavailable, the server falls back to local file output.

What transport/protocol is used?

The server uses the Model Context Protocol (MCP) and is configured in Claude Desktop’s `claude_desktop_config.json`. It connects via `bun` commands and supports standard MCP clients.