triple_click · Computer Use Windows MCP: Risk & Policy

WHAT IT DOES

What triple_click does on Computer Use Windows

AI agents invoke triple_click to trigger actions in Computer Use Windows. 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 triple_click needs a policy

This tool performs a mouse action (triple-click) on the desktop at specified coordinates, triggering a UI interaction whose effects depend on what is under the cursor. It is a browser/desktop action that executes an operation in the context of whatever application is focused, going beyond a simple read. Misuse could trigger unintended UI actions, select and expose sensitive text, or activate controls.

From the tool's definition Triple-click at the given coordinates. Selects a line in most text editors.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

triple_click Rate-limited

triple_click 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": {
    "triple_click": {
      "limits": [
        {
          "counter": "triple_click_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 Computer Use Windows, so you can run agents against it safely.

FAQ

Questions about triple_click

What does the triple_click tool do? +

Triple-click at the given coordinates. Selects a line in most text editors. ${FRONTMOST_GATE_DESC}. It is categorised as a Execute tool in the Computer Use Windows MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on triple_click? +

Register the Computer Use Windows MCP server in PolicyLayer and add a rule for triple_click: 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 Computer Use Windows. Nothing to install.

What risk level is triple_click? +

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

Can I rate-limit triple_click? +

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

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

triple_click is provided by the Computer Use Windows MCP server (wimi321/windows-computer-use-skill). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.