page_set_data · Voog MCP: Risk & Policy

WHAT IT DOES

What page_set_data does on Voog

AI agents use page_set_data 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 page_set_data needs a policy

This tool creates or modifies data (page metadata/configuration) without deleting it. The PUT operation on a data endpoint suggests update semantics that do not destroy prior state. While it could overwrite an existing value, the operation is reversible (can be set again or corrected).

From the tool's definition PUT /pages/{id}/data/{key} – modifies a page data value. The 'set_data' operation updates a single key-value pair in page data, which is reversible.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

page_set_data Rate-limited

page_set_data 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": {
    "page_set_data": {
      "limits": [
        {
          "counter": "page_set_data_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 page_set_data

What does the page_set_data tool do? +

Set a single page.data.<key> value (PUT /pages/{id}/data/{key}). 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 page_set_data? +

Register the Voog MCP server in PolicyLayer and add a rule for page_set_data: 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 page_set_data? +

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

Can I rate-limit page_set_data? +

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

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

page_set_data 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.