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Security

Mcp Guardian

io.github.rudraneel93/mcp-guardian ยท v2.3.21

Security, cost, and health governance proxy for MCP infrastructure

Source code Set it up

Connect Runs on your machine

Terminal
claude mcp add mcp-guardian -e MCP_GUARDIAN_DB_PATH=<MCP_GUARDIAN_DB_PATH> -e ALERT_WEBHOOK_URL=<ALERT_WEBHOOK_URL> -e METRICS_ENABLED=<METRICS_ENABLED> -- npx -y @mcp-guardian/[email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "mcp-guardian": {
      "command": "npx",
      "args": [
        "-y",
        "@mcp-guardian/[email protected]"
      ],
      "env": {
        "MCP_GUARDIAN_DB_PATH": "<MCP_GUARDIAN_DB_PATH>",
        "ALERT_WEBHOOK_URL": "<ALERT_WEBHOOK_URL>",
        "METRICS_ENABLED": "<METRICS_ENABLED>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "mcp-guardian": {
      "command": "npx",
      "args": [
        "-y",
        "@mcp-guardian/[email protected]"
      ],
      "env": {
        "MCP_GUARDIAN_DB_PATH": "<MCP_GUARDIAN_DB_PATH>",
        "ALERT_WEBHOOK_URL": "<ALERT_WEBHOOK_URL>",
        "METRICS_ENABLED": "<METRICS_ENABLED>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "mcp-guardian": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@mcp-guardian/[email protected]"
      ],
      "env": {
        "MCP_GUARDIAN_DB_PATH": "<MCP_GUARDIAN_DB_PATH>",
        "ALERT_WEBHOOK_URL": "<ALERT_WEBHOOK_URL>",
        "METRICS_ENABLED": "<METRICS_ENABLED>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
MCP_GUARDIAN_DB_PATH
Optional		Path to SQLite history database
ALERT_WEBHOOK_URL
Optional, secret		Slack or Discord webhook for critical alerts
METRICS_ENABLED
Optional		Expose Prometheus metrics

Details

Package@mcp-guardian/[email protected] (NPM, stdio)
First published14 May 2026
Last updated14 May 2026
Registry nameio.github.rudraneel93/mcp-guardian

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