screenshot_window

Take a screenshot of a matching top-level window instead of the full desktop.

SERVERMcp Control Plane SOURCEalbertik322-sudo/mcp-control-plane

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/mcp-control-plane/screenshot-window.md

WHAT IT DOES

What screenshot_window does on Mcp Control Plane

AI agents call screenshot_window to retrieve information from Mcp Control Plane without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why screenshot_window is rated Low

This tool retrieves visual information from a window's display without side effects. It does not create, modify, delete, execute code, or move funds. While screenshots could theoretically reveal sensitive information if misused, the tool itself is a passive read operation with limited blast radius in isolation.

From the tool's definition Tool name is 'screenshot_window' and description states it takes 'a screenshot of a matching top-level window instead of the full desktop.' Screenshots are read-only operations that capture visual state without modifying data or triggering external actions.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs screenshot_window safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp Control Plane, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For screenshot_window, this is the rule to start with:

screenshot_window Allowed

screenshot_window is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "screenshot_window": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mcp Control Plane, apply this rule, and every screenshot_window call is checked against it from then on.

FAQ

Questions about screenshot_window

What does the screenshot_window tool do? +

Take a screenshot of a matching top-level window instead of the full desktop. It is categorised as a Read tool in the Mcp Control Plane MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on screenshot_window? +

Register the Mcp Control Plane MCP server in PolicyLayer and add a rule for screenshot_window: 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 Control Plane. Nothing to install.

What risk level is screenshot_window? +

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

Can I rate-limit screenshot_window? +

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

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

screenshot_window is provided by the Mcp Control Plane MCP server (albertik322-sudo/mcp-control-plane). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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