click · MacWright MCP: Risk & Policy

WHAT IT DOES

What click does on MacWright

AI agents invoke click to trigger actions in MacWright. 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 click needs a policy

Clicking at arbitrary screen coordinates triggers UI interactions whose effects are entirely dependent on what is at those coordinates at runtime — could submit forms, confirm dialogs, activate destructive buttons, etc. This is an Execute-category action with high severity because an AI agent could misuse it to trigger any on-screen action including irreversible ones.

From the tool's definition "Perform a left mouse click at the specified screen coordinates (x, y)"

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

click Rate-limited

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": {
    "click": {
      "limits": [
        {
          "counter": "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 MacWright, so you can run agents against it safely.

FAQ

Questions about click

What does the click tool do? +

Perform a left mouse click at the specified screen coordinates (x, y). Coordinates are in LOGICAL screen pixels (not screenshot pixels). It is categorised as a Execute tool in the MacWright MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on click? +

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

What risk level is click? +

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

Can I rate-limit click? +

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

Set action: deny in the PolicyLayer policy for 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 click? +

click is provided by the MacWright MCP server (ruchit-p/macwright). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.