OPNsense Guard MCP Server: Install & Setup

Install OPNsense Guard in Claude Code

Claude Code

claude mcp add opnsense-guard -e OPNSENSE_URL=... -e OPNSENSE_API_KEY=... -e OPNSENSE_API_SECRET=... -- uvx opnsense-guard-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "opnsense-guard": {
      "command": "uvx",
      "args": [
        "opnsense-guard-mcp"
      ],
      "env": {
        "OPNSENSE_URL": "...",
        "OPNSENSE_API_KEY": "...",
        "OPNSENSE_API_SECRET": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the OPNsense Guard MCP server do?

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

Is the OPNsense Guard MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does OPNsense Guard run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add OPNsense Guard to Claude Code?

Run: claude mcp add opnsense-guard -e OPNSENSE_URL=... -e OPNSENSE_API_KEY=... -e OPNSENSE_API_SECRET=... -- uvx opnsense-guard-mcp

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