notion_append_text · Polybridge MCP: Risk & Policy

WHAT IT DOES

What notion_append_text does on Polybridge MCP

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

WHY IT NEEDS A POLICY

Why notion_append_text needs a policy

This tool modifies an existing Notion page by adding content to it. This is a reversible write operation (content can be deleted), not destructive. Severity is medium because an AI agent could append unwanted or harmful content to important Notion pages, potentially affecting shared documentation or workflows.

From the tool's definition Append a text paragraph to an existing Notion page

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

notion_append_text Rate-limited

notion_append_text 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": {
    "notion_append_text": {
      "limits": [
        {
          "counter": "notion_append_text_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 Polybridge MCP, so you can run agents against it safely.

FAQ

Questions about notion_append_text

What does the notion_append_text tool do? +

Append a text paragraph to an existing Notion page. It is categorised as a Write tool in the Polybridge MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on notion_append_text? +

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

What risk level is notion_append_text? +

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

Can I rate-limit notion_append_text? +

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

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

notion_append_text is provided by the Polybridge MCP server (madjeek-web/polybridge-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.