computer_screen_info

Get the logical resolution of the main display (the coordinate space for computer_* tools).

SERVERLocalAnt SOURCEyuga-hashimoto/localant

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/yuga-hashimoto-localant/computer-screen-info.md

WHAT IT DOES

What computer_screen_info does on LocalAnt

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

RISK

Why computer_screen_info is rated Low

This tool purely retrieves display resolution information for coordinate mapping purposes. It performs a read-only query of system display properties, causing no modifications, deletions, code execution, or financial impact. The low severity reflects the minimal risk: knowing screen resolution does not enable malicious actions on its own and is informational only.

From the tool's definition Tool name 'computer_screen_info' and description 'Get the logical resolution of the main display' indicates a query operation that retrieves display metadata with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs computer_screen_info safely

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

computer_screen_info Allowed

computer_screen_info 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": {
    "computer_screen_info": {}
  }
}

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

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

FAQ

Questions about computer_screen_info

What does the computer_screen_info tool do? +

Get the logical resolution of the main display (the coordinate space for computer_* tools). It is categorised as a Read tool in the LocalAnt MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on computer_screen_info? +

Register the LocalAnt MCP server in PolicyLayer and add a rule for computer_screen_info: 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 LocalAnt. Nothing to install.

What risk level is computer_screen_info? +

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

Can I rate-limit computer_screen_info? +

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

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

computer_screen_info is provided by the LocalAnt MCP server (yuga-hashimoto/localant). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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