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sigmade

Simple Merge Review MCP

by sigmade
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TypeScript
Local

Simple Merge Review MCP

A lightweight MCP server for quick Git merge analysis. Shows only essential information without complex conflict checks.

🚀 Features

  • Quick Merge Overview - core change statistics

  • Changed Files List - what will be affected by merge

  • Simple Statistics - number of commits, lines, files

📦 Installation

# Clone the repository
git clone <repository-url>
cd local-merge-review-mcp

# Install dependencies
npm install

# Build the project
npm run build

🛠️ Just 2 Simple Tools

1. show_merge_diff

Show changes between branches before merge.

await mcp.call_tool("show_merge_diff", {
  repoPath: "/path/to/your/repo",
  fromBranch: "main", // optional, defaults to main
  toBranch: "feature/new-feature" // optional, defaults to current
});

Result:

{
  "sourceBranch": "main",
  "targetBranch": "feature/new-feature", 
  "filesChanged": ["src/component.js", "package.json", "README.md"],
  "insertions": 45,
  "deletions": 12,
  "commits": 3,
  "summary": "3 commits, 3 files, +45/-12 lines"
}

2. quick_merge_summary

Quick merge change summary.

await mcp.call_tool("quick_merge_summary", {
  repoPath: "/path/to/your/repo",
  branch: "feature/auth" // optional, defaults to current
});

Result:

{
  "currentBranch": "feature/auth",
  "baseBranch": "main",
  "message": "5 commits ahead",
  "aheadBy": 5,
  "behindBy": 0,
  "needsMerge": true
}

📋 Common Use Cases

Quick Pre-merge Check

"Show changes in feature/payment branch compared to main"
# show_merge_diff

Branch Status Check

"How many commits ahead is the current branch?"
# quick_merge_summary

Understanding Change Scope

"How many files will change after merging this branch?"
# show_merge_diff + file list analysis

📝 Usage with Claude Example

"Show changes between main and feature/auth in /home/user/myproject"

"How many commits ahead is current branch from main?"

"Which files will change after merge?"

⚡ Why Simple is Better

  • Fast - no complex conflict checks

  • Clear - only essential information

  • Reliable - minimal dependencies

  • Practical - covers 90% of use cases

By default, conflicts are not expected, so complex checks are unnecessary. This MCP shows only what's truly important before merging.

⚠️ Requirements

  • Git installed and available in PATH

  • Node.js >= 18.0.0

🚧 Easy to Add Features

  • Format handling for specific files (.js, .py, etc)

  • Package.json version integration

  • Basic metrics (lines of code, comments)

  • Export to various formats

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