activate_layout · Moom MCP Server MCP: Risk & Policy

WHAT IT DOES

What activate_layout does on Moom MCP Server

AI agents invoke activate_layout to trigger actions in Moom MCP Server. 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 activate_layout needs a policy

Activating a layout triggers an external operation that repositions and resizes application windows. This is not a simple read, nor purely destructive or financial. It executes a system-level action (window management) whose effects depend on the named layout argument, fitting the Execute category. Severity is medium because misuse could disrupt user workspace arrangements but is generally reversible.

From the tool's definition Activate a specific Moom layout by name — triggers an external operation (applying a window layout configuration) that rearranges windows on the macOS desktop

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

activate_layout Rate-limited

activate_layout 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": {
    "activate_layout": {
      "limits": [
        {
          "counter": "activate_layout_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 Moom MCP Server, so you can run agents against it safely.

FAQ

Questions about activate_layout

What does the activate_layout tool do? +

Activate a specific Moom layout by name. It is categorised as a Execute tool in the Moom MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on activate_layout? +

Register the Moom MCP Server MCP server in PolicyLayer and add a rule for activate_layout: 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 Moom MCP Server. Nothing to install.

What risk level is activate_layout? +

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

Can I rate-limit activate_layout? +

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

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

activate_layout is provided by the Moom MCP Server MCP server (itrimble/moom-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.