install_plugin · OPanel MCP: Risk & Policy

WHAT IT DOES

What install_plugin does on OPanel MCP

AI agents use install_plugin to create or update resources in OPanel MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your OPanel MCP environment.

WHY IT NEEDS A POLICY

Why install_plugin needs a policy

An AI agent can call install_plugin faster than any human can review — one bad instruction and it creates or modifies resources in OPanel MCP by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

install_plugin Rate-limited

install_plugin stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "install_plugin": {
      "limits": [
        {
          "counter": "install_plugin_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches OPanel MCP, so you can run agents against it safely.

FAQ

Questions about install_plugin

What does the install_plugin tool do? +

This MCP server does not provide plugin installation. Use other tools to download plugins/mods from browser, then manually place them into the server plugins/mods folder. It is categorised as a Write tool in the OPanel MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on install_plugin? +

Register the OPanel MCP server in PolicyLayer and add a rule for install_plugin: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches OPanel MCP. Nothing to install.

What risk level is install_plugin? +

install_plugin is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit install_plugin? +

Yes. Add a rate_limit block to the install_plugin rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block install_plugin completely? +

Set action: deny in the PolicyLayer policy for install_plugin. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides install_plugin? +

install_plugin is provided by the OPanel MCP server (opanel-mc/opanel-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.