screenshot_focus_selection

Focus viewport on selected actors and take a screenshot.

SERVERUefn SOURCEquangdang46/uefn-verse-mcp

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/quangdang46-uefn-verse-mcp/screenshot-focus-selection.md

WHAT IT DOES

What screenshot_focus_selection does on Uefn

AI agents call screenshot_focus_selection to retrieve information from Uefn 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_focus_selection is rated Low

The tool only reads the current state of the editor by taking a screenshot. It adjusts the viewport focus (a non-destructive, reversible visual change) and captures an image. No data is created, modified, deleted, or executed.

From the tool's definition Focus viewport on selected actors and take a screenshot

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs screenshot_focus_selection safely

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

screenshot_focus_selection Allowed

screenshot_focus_selection 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_focus_selection": {}
  }
}

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

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

FAQ

Questions about screenshot_focus_selection

What does the screenshot_focus_selection tool do? +

Focus viewport on selected actors and take a screenshot. It is categorised as a Read tool in the Uefn MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on screenshot_focus_selection? +

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

What risk level is screenshot_focus_selection? +

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

Can I rate-limit screenshot_focus_selection? +

Yes. Add a rate_limit block to the screenshot_focus_selection 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_focus_selection completely? +

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

screenshot_focus_selection is provided by the Uefn MCP server (quangdang46/uefn-verse-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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