window_change_title · Claude Imagine MCP: Risk & Policy

WHAT IT DOES

What window_change_title does on Claude Imagine

AI agents use window_change_title to create or update resources in Claude Imagine — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Claude Imagine environment.

WHY IT NEEDS A POLICY

Why window_change_title needs a policy

This tool writes/updates a UI element (the window title) in the browser interface. It is a reversible modification with minimal blast radius — it only changes displayed text and can be undone by changing the title again. No data is deleted, no code is executed, and no financial operations are involved.

From the tool's definition 'Change the title of a window' — modifies UI state (window title) reversibly

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

window_change_title Rate-limited

window_change_title stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "window_change_title": {
      "limits": [
        {
          "counter": "window_change_title_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Claude Imagine, so you can run agents against it safely.

FAQ

Questions about window_change_title

What does the window_change_title tool do? +

Change the title of a window. It is categorised as a Write tool in the Claude Imagine MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on window_change_title? +

Register the Claude Imagine MCP server in PolicyLayer and add a rule for window_change_title: 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 Claude Imagine. Nothing to install.

What risk level is window_change_title? +

window_change_title is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit window_change_title? +

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

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

window_change_title is provided by the Claude Imagine MCP server (t3rm1nu55/claudeimagine). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.