sync_markdown_file · Notion Private Api MCP: Risk & Policy

WHAT IT DOES

What sync_markdown_file does on Notion Private Api

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

WHY IT NEEDS A POLICY

Why sync_markdown_file needs a policy

This tool performs reversible data modification operations (create and update). While it could theoretically overwrite existing pages, the operation is technically reversible through Notion's version history and undo features, placing it in Write rather than Destructive.

From the tool's definition Tool description states it can 'Create a new page or replace an existing page from a local Markdown file.' This is a write operation that creates or modifies data reversibly. The action 'replace an existing page' indicates modification of existing content.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sync_markdown_file Rate-limited

sync_markdown_file 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": {
    "sync_markdown_file": {
      "limits": [
        {
          "counter": "sync_markdown_file_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 Notion Private Api, so you can run agents against it safely.

FAQ

Questions about sync_markdown_file

What does the sync_markdown_file tool do? +

Create a new page or replace an existing page from a local Markdown file. It is categorised as a Write tool in the Notion Private Api MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on sync_markdown_file? +

Register the Notion Private Api MCP server in PolicyLayer and add a rule for sync_markdown_file: 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 Notion Private Api. Nothing to install.

What risk level is sync_markdown_file? +

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

Can I rate-limit sync_markdown_file? +

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

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

sync_markdown_file is provided by the Notion Private Api MCP server (kirvigen/notion-private-api-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.