layout_update · Voog MCP: Risk & Policy

WHAT IT DOES

What layout_update does on Voog

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

WHY IT NEEDS A POLICY

Why layout_update needs a policy

This tool modifies existing layout templates and their properties. While it changes data (Liquid template source), the operation is reversible—layouts can be updated again or reverted. This makes it a Write operation rather than Destructive. The scope is limited to layout configuration within the CMS.

From the tool's definition 'Update a layout' with parameters including 'body (Liquid template source)' and 'title' indicates modification of template and metadata. The description is truncated but clearly describes a reversible update operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

layout_update Rate-limited

layout_update 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": {
    "layout_update": {
      "limits": [
        {
          "counter": "layout_update_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 Voog, so you can run agents against it safely.

FAQ

Questions about layout_update

What does the layout_update tool do? +

Update a layout — body (Liquid template source), title,. It is categorised as a Write tool in the Voog MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on layout_update? +

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

What risk level is layout_update? +

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

Can I rate-limit layout_update? +

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

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

layout_update is provided by the Voog MCP server (runnel/voog-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.