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HOL Guard

HOL Guard is an MCP server that adds developer tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Local-first AI agent security evidence and approval workflows through HOL Guard's stdio MCP server. It has 796 GitHub stars, is released under the Apache-2.0 license and runs locally with uvx hol-guard.

github.com/hashgraph-online/hol-guard (opens in a new tab)

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Install HOL Guard

Generated from the server's MCP registry entry. Replace your-value with your own values.

Claude Desktop

claude_desktop_config.json
{
  "mcpServers": {
    "hol-guard": {
      "command": "uvx",
      "args": [
        "hol-guard"
      ]
    }
  }
}

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

Claude Code

claude mcp add --transport stdio hol-guard -- uvx hol-guard

Cursor

.cursor/mcp.json
{
  "mcpServers": {
    "hol-guard": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "hol-guard"
      ]
    }
  }
}

Project file; use ~/.cursor/mcp.json to enable it in every project.

VS Code

.vscode/mcp.json
{
  "servers": {
    "hol-guard": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "hol-guard"
      ]
    }
  }
}

Config formats checked against the official docs on Oct 7, 2026: modelcontextprotocol.io (opens in a new tab), code.claude.com (opens in a new tab), cursor.com (opens in a new tab), code.visualstudio.com (opens in a new tab).

About HOL Guard

HOL Guard reviews agent actions before they run: shell commands, file access, package installs, and MCP tool calls. It detects secret exposure, destructive operations, prompt injection, and supply-chain risks, then allows, blocks, or requests approval according to your policy.

  • mcp
  • security
  • agent-security
  • ai-agent-security
  • ai-agents
  • ai-security
  • claude-code
  • cursor
  • devsecops
  • gemini-cli

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FAQ

HOL Guard FAQ

Still curious? Email info@appsgit.com.

What is HOL Guard?

HOL Guard is an MCP server that adds developer tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Local-first AI agent security evidence and approval workflows through HOL Guard's stdio MCP server. It has 796 GitHub stars, is released under the Apache-2.0 license and runs locally with uvx hol-guard. The source code is at github.com/hashgraph-online/hol-guard.

How do I install the HOL Guard MCP server?

Add the command uvx hol-guard to your MCP client: put it in claude_desktop_config.json for Claude Desktop, run claude mcp add for Claude Code, or add it to .cursor/mcp.json (Cursor) or .vscode/mcp.json (VS Code). The snippets on this page are ready to paste.

Is HOL Guard free?

The server is open source under the Apache-2.0 license, so running it is free. It does not declare any required API key.

Is HOL Guard actively maintained?

The most recent commit was on Oct 7, 2026. The latest release is v3.29.0, published Oct 7, 2026. appsgit only lists MCP servers with a commit in the last six months and re-checks every server daily.