MCP Servers

mcp-merge-guard

Guards PR merge decisions by validating CI, approvals, conflicts, and branch freshness.

Category

README

mcp-merge-guard

MCP server that guards PR merge decisions by validating CI, approvals, conflicts, and branch freshness.

Features

check-merge-ready - Query-only status check that validates all guards
guard-merge - Atomic validate-then-merge that refuses if guards fail
- Optional localRepoPath support updates the local base branch after merge without relying on the clone's remote protocol

Guards

Guard	Description
ci-status	All CI checks passed, none pending or failed
approval	PR is approved (or no review required)
conflicts	No merge conflicts
up-to-date	Branch is current with base (optional, off by default)

Installation

Requires gh CLI installed and authenticated.

With Nix (recommended)

Add to your Claude Code settings (~/.claude/settings.json):

{
  "mcpServers": {
    "merge-guard": {
      "command": "nix",
      "args": ["run", "github:paolino/mcp-merge-guard"]
    }
  }
}

Or use /settings in Claude Code to add the MCP server through the UI.

From source

git clone https://github.com/paolino/mcp-merge-guard
cd mcp-merge-guard
npm install && npm run build

Add to ~/.claude/settings.json (use absolute path):

{
  "mcpServers": {
    "merge-guard": {
      "command": "node",
      "args": ["/absolute/path/to/mcp-merge-guard/dist/index.js"]
    }
  }
}

Restart Claude Code after adding the configuration.

Usage

Once configured, use the tools in Claude Code:

Check if PR #42 in owner/repo is ready to merge

Merge PR #42 in owner/repo if all guards pass

Documentation

Full documentation at paolino.github.io/mcp-merge-guard

Development

just install   # Install dependencies
just build     # Build TypeScript
just test      # Run tests
just CI        # Full CI pipeline

License

MIT

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