agent-guard-mcp

agent-guard-mcp

MCP server (written in Go, single static binary) for git-aware safe file operations. Give your AI agents (Claude Code, GitHub Copilot CLI, Cursor, …) free rein to delete what they build — while making it impossible for them to delete your git-tracked source code.

Policy: anything is deletable until it's tracked by a git repository.

Tools

Tool	Purpose
safe_delete	Delete files/dirs; refuses git-tracked files or dirs containing them. Supports dry_run.
check_protection	Report whether paths are protected and why.
guard_status	Summarize a directory: tracked (protected) vs untracked (deletable) counts.

Install

Build the single static binary (no runtime dependencies):

go build -o agent-guard-mcp .

Or install directly:

go install github.com/kavachh/agent-guard-mcp@latest

Claude Code

claude mcp add agent-guard -- /path/to/agent-guard-mcp

GitHub Copilot CLI

In ~/.copilot/mcp-config.json:

{
  "mcpServers": {
    "agent-guard": { "command": "/path/to/agent-guard-mcp", "args": [] }
  }
}

Any MCP client (generic stdio config)

{ "command": "/path/to/agent-guard-mcp", "args": [] }

Recommended agent instructions

Add to your CLAUDE.md / AGENTS.md / .github/copilot-instructions.md:

Never use rm in the shell. Always delete files with the safe_delete MCP tool, which protects git-tracked source code.

Since safe_delete can never destroy tracked source, it is safe to auto-approve this server's tools in your client's permission settings.

Example

safe_delete { "paths": ["build/", "scratch.txt"] }
→ deleted (untracked)

safe_delete { "paths": ["src/main/java/App.java"] }
→ BLOCKED: git-tracked source file — use `git rm` deliberately if intended

Requirements

• git on PATH
• Go ≥ 1.24 (build only — the binary itself has zero dependencies)

Testing

24-case edge suite (tracked/staged/ignored files, nested repos, symlinks, dry-run, …):

go build -o agent-guard-mcp . && npm test