Agent Guard MCP Server

by mdfifty50-boop Your server? Claim it

local only

Agent Guard runs on your own machine — the client starts it, so there is no endpoint to ping. 69 installs a week from npm. Last commit 24 Apr 2026.

Constitutional guardrails and loop detection for AI agents

Installs per day peak 14 · avg 6 · -5% w/w

a month agotoday

Installs / week

npm · agent-guard-mcp

Stars

0 open issues

24 Apr 2026

Last commit

no releases in 90 days

MIT

License

JavaScript

Nothing serious here today

Today is the operative word: we check Agent Guard every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add agent-guard -- npx -y agent-guard-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "agent-guard": {
      "command": "npx",
      "args": [
        "-y",
        "agent-guard-mcp"
      ]
    }
  }
}

~/.codex/config.toml

[mcp_servers.agent-guard]
command = "npx"
args = ["-y", "agent-guard-mcp"]

.cursor/mcp.json

{
  "mcpServers": {
    "agent-guard": {
      "command": "npx",
      "args": [
        "-y",
        "agent-guard-mcp"
      ]
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "agent-guard": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "agent-guard-mcp"
      ]
    }
  }
}

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Agent Guard — questions

Answers built from our own checks of this server.

Why is there no uptime for Agent Guard?

Agent Guard runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package agent-guard-mcp was installed 69 times last week.

How do I connect Agent Guard?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls agent-guard-mcp straight from npm; nothing to host, nothing to sign up for.

How many people use Agent Guard?

The npm package agent-guard-mcp was installed 69 times in the last week. Week over week that is -5%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Agent Guard open source?

Yes — it is published under the MIT licence, written in JavaScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.