right_click · Mcp Desktop MCP: Risk & Policy

WHAT IT DOES

What right_click does on Mcp Desktop

AI agents invoke right_click to trigger actions in Mcp Desktop. 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 right_click needs a policy

Right-clicking triggers context menus and UI interactions on the desktop, executing UI actions that can lead to further operations (e.g., opening files, deleting items, running programs).

From the tool's definition Right-click (secondary click) at the given screen coordinates

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

right_click Rate-limited

right_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": {
    "right_click": {
      "limits": [
        {
          "counter": "right_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 Mcp Desktop, so you can run agents against it safely.

FAQ

Questions about right_click

What does the right_click tool do? +

Right-click (secondary click) at the given screen coordinates. Pass verify_app to confirm the right app is frontmost before clicking. It is categorised as a Execute tool in the Mcp Desktop MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on right_click? +

Register the Mcp Desktop MCP server in PolicyLayer and add a rule for right_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 Mcp Desktop. Nothing to install.

What risk level is right_click? +

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

Can I rate-limit right_click? +

Yes. Add a rate_limit block to the right_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 right_click completely? +

Set action: deny in the PolicyLayer policy for right_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 right_click? +

right_click is provided by the Mcp Desktop MCP server (mocha06/mcp-desktop). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.