OPNsense Guard

io.github.d3ltasecurity/opnsense-guard-mcp

Safety-first OPNsense firewall MCP: read-only by default, planned and auto-reverting writes.

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Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "opnsense-guard-mcp": {
      "command": "uvx",
      "args": [
        "opnsense-guard-mcp"
      ],
      "env": {
        "OPNSENSE_URL": "<your OPNSENSE_URL>",
        "OPNSENSE_API_KEY": "<your OPNSENSE_API_KEY>",
        "OPNSENSE_API_SECRET": "<your OPNSENSE_API_SECRET>"
      }
    }
  }
}
Environment variables
  • OPNSENSE_URLrequiredFirewall base URL, e.g. https://firewall.example.internal
  • OPNSENSE_API_KEYrequiredsecretAPI key of a least-privilege read user
  • OPNSENSE_API_SECRETrequiredsecretAPI secret of the read user

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
Developer Tools
Version
0.1.1
Registry
active
Published
10/27/2026

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Add the badge to your site

Show visitors that OPNsense Guard is listed here — it’s also the link we check for a free listing.

OPNsense Guard — listed on Serverdex

HTML — for your website

<a href="https://serverdex.io/server/io-github-d3ltasecurity-opnsense-guard-mcp?utm_source=badge"><img src="https://serverdex.io/brand/badge.svg" alt="OPNsense Guard — listed on Serverdex" width="123" height="40" loading="lazy"></a>

Recommended. A dofollow link from your own domain is the one that counts for search engines, and it's the link we check for a free listing.

Markdown — for your README

[![OPNsense Guard — listed on Serverdex](https://serverdex.io/brand/badge.svg)](https://serverdex.io/server/io-github-d3ltasecurity-opnsense-guard-mcp?utm_source=badge)

Nice for visibility, but GitHub marks README links nofollow, so it doesn't pass authority. Use the HTML badge on your site as well.