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MCPSentinel

io.github.gentaArnezzi/mcpsentinel ยท v0.8.8

Precision-first security scanning for Model Context Protocol servers.

Source code Set it up

Connect Runs on your machine

Terminal
claude mcp add mcpsentinel -e MCPSENTINEL_ALLOWED_HOSTS=<MCPSENTINEL_ALLOWED_HOSTS> -e MCPSENTINEL_ALLOW_PRIVATE_HTTP_TARGETS=<MCPSENTINEL_ALLOW_PRIVATE_HTTP_TARGETS> -- uvx mcp-guardian-scan==0.8.8
claude_desktop_config.json
{
  "mcpServers": {
    "mcpsentinel": {
      "command": "uvx",
      "args": [
        "mcp-guardian-scan==0.8.8"
      ],
      "env": {
        "MCPSENTINEL_ALLOWED_HOSTS": "<MCPSENTINEL_ALLOWED_HOSTS>",
        "MCPSENTINEL_ALLOW_PRIVATE_HTTP_TARGETS": "<MCPSENTINEL_ALLOW_PRIVATE_HTTP_TARGETS>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "mcpsentinel": {
      "command": "uvx",
      "args": [
        "mcp-guardian-scan==0.8.8"
      ],
      "env": {
        "MCPSENTINEL_ALLOWED_HOSTS": "<MCPSENTINEL_ALLOWED_HOSTS>",
        "MCPSENTINEL_ALLOW_PRIVATE_HTTP_TARGETS": "<MCPSENTINEL_ALLOW_PRIVATE_HTTP_TARGETS>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "mcpsentinel": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "mcp-guardian-scan==0.8.8"
      ],
      "env": {
        "MCPSENTINEL_ALLOWED_HOSTS": "<MCPSENTINEL_ALLOWED_HOSTS>",
        "MCPSENTINEL_ALLOW_PRIVATE_HTTP_TARGETS": "<MCPSENTINEL_ALLOW_PRIVATE_HTTP_TARGETS>"
      }
    }
  }
}

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
MCPSENTINEL_ALLOWED_HOSTS
Required		Comma-separated MCP server hostnames, optionally with an exact port, that the MCP-native scanner may connect to.
MCPSENTINEL_ALLOW_PRIVATE_HTTP_TARGETS
Optional		Set to true only to permit an explicitly allowlisted private or reserved HTTP address in a trusted local network.

Details

Package[email protected] (PYPI, stdio)
First published21 Sep 2026
Last updated21 Sep 2026
Registry nameio.github.gentaArnezzi/mcpsentinel

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