append_to_page · OneNote MCP Server MCP: Risk & Policy

WHAT IT DOES

What append_to_page does on OneNote MCP Server

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

WHY IT NEEDS A POLICY

Why append_to_page needs a policy

The name 'append_to_page' strongly implies adding content to an existing OneNote page, which is a reversible write operation. The server description explicitly lists 'appending content' as a feature. While the tool description is empty (lowering confidence), the combination of name and server context makes Write the most appropriate category.

From the tool's definition Tool name 'append_to_page' and server description mentions 'appending content' as a key capability alongside creating pages and searching notes.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

append_to_page Rate-limited

append_to_page 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": {
    "append_to_page": {
      "limits": [
        {
          "counter": "append_to_page_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 OneNote MCP Server, so you can run agents against it safely.

FAQ

Questions about append_to_page

What does the append_to_page tool do? +

append_to_page. It is categorised as a Write tool in the OneNote MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on append_to_page? +

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

What risk level is append_to_page? +

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

Can I rate-limit append_to_page? +

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

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

append_to_page is provided by the OneNote MCP Server MCP server (mhzarem/onenote-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.