DiffPilot TypeScript

Local AI Code Review for GitHub Copilot, Claude, and AI Assistants

🔌 MCP Server - TypeScript/Node.js Implementation
⚡ No .NET required - Just Node.js 18+

💡 What Does DiffPilot Do?

1. Self-Review Before PR - After your last commit, run AI code review locally before pushing
2. Reviewer Workflow - Checkout any branch and get AI-assisted code review
3. Auto Branch Detection - No need to specify base branch - DiffPilot finds it

📦 Installation

VS Code Extension (Recommended)

Install from VS Code Marketplace

npm (Global)

npm install -g diffpilot

npx (Direct Usage)

npx diffpilot

Manual MCP Configuration

Add to your MCP settings (Claude Desktop, etc.):

{
  "mcpServers": {
    "diffpilot": {
      "command": "npx",
      "args": ["diffpilot"]
    }
  }
}

🚀 Quick Start

# Review my changes (auto-detects main/master/develop)
@workspace #review_pr_changes

# Review with focus
@workspace #review_pr_changes focus on security

# Generate commit message
@workspace #generate_commit_message

# Scan for secrets
@workspace #scan_secrets

🛠️ 9 MCP Tools

| Tool | Description | |------|-------------| | get_pr_diff | Get raw diff between branches | | review_pr_changes | Diff with AI review instructions | | generate_pr_title | Conventional PR title | | generate_pr_description | Full PR description with checklist | | generate_commit_message | Commit message from changes | | scan_secrets | Detect API keys, passwords, tokens | | diff_stats | Change statistics by file | | suggest_tests | Recommend test cases | | generate_changelog | Changelog from commits |

✨ Key Features

• 🔄 Auto Branch Detection - Finds main, master, develop automatically
• 🔐 Secret Scanning - Detects API keys, passwords, tokens, JWT, private keys
• 📊 Diff Statistics - Lines added/removed, file breakdown
• 🧪 Test Suggestions - Pattern-based recommendations
• 🏢 Enterprise Ready - Azure DevOps, TFS, air-gapped environments
• ⚡ Zero External Dependencies - Pure TypeScript/Node.js

📁 Project Structure

diffpilot-ts/
├── src/
│   ├── index.ts           # MCP Server entry point
│   ├── git/               # Git operations
│   │   └── git-service.ts
│   ├── security/          # Security helpers
│   │   └── security-helpers.ts
│   ├── tools/             # MCP tool implementations
│   │   ├── pr-review.ts   # PR review tools
│   │   ├── developer.ts   # Developer tools
│   │   └── types.ts       # Shared types
│   └── utils/             # Utilities
├── tests/                 # Vitest tests
├── vscode-extension/      # VS Code Extension
│   ├── src/
│   │   └── extension.ts
│   ├── images/
│   └── package.json
├── package.json
├── tsconfig.json
└── vitest.config.ts

🔧 Development

Prerequisites

• Node.js 18+
• Git

Setup

# Install dependencies
npm install

# Build
npm run build

# Run tests
npm test

# Run in development
npm run dev

Build Extension

cd vscode-extension
npm install
npm run package

This creates diffpilot-2.0.0.vsix in the vscode-extension folder.

🆚 C# vs TypeScript Version

| Feature | C# (.NET 9) | TypeScript (Node.js) | |---------|-------------|---------------------| | Runtime | .NET 9 SDK | Node.js 18+ | | Startup | Slower (JIT) | Faster | | Binary Size | ~50MB | ~7MB | | Dependencies | None | @modelcontextprotocol/sdk | | Performance | Excellent | Very Good |

Choose TypeScript if:

• You don't have .NET SDK installed
• You want faster startup time
• You prefer smaller extension size

Choose C# if:

• You already have .NET 9 SDK
• You want maximum performance
• You're in a .NET-heavy environment

📄 License

MIT - Burak Kalafat

🔗 Links

• VS Code Marketplace: DiffPilot Extension
• C# Version: DiffPilot (C#)
• Issues: GitHub Issues