opt

THE RISK

Low Risk

Why opt needs a policy

With no description and an ambiguous single-word name 'opt', there is insufficient information to classify this tool meaningfully. While the server context involves Windows desktop automation, 'opt' could refer to options/settings configuration or something else entirely. Lowering confidence accordingly and defaulting to Other.

From the tool's definition Tool name is 'opt' with an empty description. No functional information is available to determine what this tool does.

Documented attack patterns abuse exactly the kind of access opt gives an agent:

POLICY

How to control opt

PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Windows Desktop Automation, and nothing reaches the server without passing your rules. This is the rule we recommend for opt:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "opt": {
      "limits": [
        {
          "counter": "opt_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

opt gets a rate cap, and everything else on the server is denied unless you say otherwise.

Create a free account and register MCP Windows Desktop Automation — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

SET A RULE FOR THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Tool risk categories → How PolicyLayer classifies MCP tools by what they can do.
MCP tool → What an MCP tool is and how clients discover and call it.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about opt

What does the opt tool do? +

opt. It is categorised as a Other tool in the MCP Windows Desktop Automation MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on opt? +

Register the MCP Windows Desktop Automation MCP server in PolicyLayer and add a rule for opt: 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 MCP Windows Desktop Automation. Nothing to install.

What risk level is opt? +

opt is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit opt? +

Yes. Add a rate_limit block to the opt 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 opt completely? +

Set action: deny in the PolicyLayer policy for opt. 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 opt? +

opt is provided by the MCP Windows Desktop Automation MCP server (mario-andreschak/mcp-windows-desktop-automation). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MCP Windows Desktop Automation tool call.

Start from MCP Windows Desktop Automation, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →