reload_plugin · QGIS MCP: Risk & Policy

WHAT IT DOES

What reload_plugin does on QGIS MCP

AI agents invoke reload_plugin to trigger actions in QGIS MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why reload_plugin needs a policy

Reloading a plugin triggers an execution action within QGIS — it unloads and re-initializes plugin code, which can have side effects depending on what the plugin does (e.g., reinitializing connections, resetting state). This is not a simple read or write but an operational/execution action.

From the tool's definition Reload a QGIS plugin by name

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reload_plugin Rate-limited

reload_plugin stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "reload_plugin": {
      "limits": [
        {
          "counter": "reload_plugin_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about reload_plugin

What does the reload_plugin tool do? +

Reload a QGIS plugin by name. Cannot reload the MCP plugin itself. It is categorised as a Execute tool in the QGIS MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on reload_plugin? +

Register the QGIS MCP server in PolicyLayer and add a rule for reload_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 QGIS MCP. Nothing to install.

What risk level is reload_plugin? +

reload_plugin is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit reload_plugin? +

Yes. Add a rate_limit block to the reload_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 reload_plugin completely? +

Set action: deny in the PolicyLayer policy for reload_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 reload_plugin? +

reload_plugin is provided by the QGIS MCP server (nkarasiak/qgis-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.