handle_file_rename · Notemd MCP Server MCP: Risk & Policy

WHAT IT DOES

What handle_file_rename does on Notemd MCP Server

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

WHY IT NEEDS A POLICY

Why handle_file_rename needs a policy

This tool creates or modifies data reversibly by updating references/backlinks across the knowledge base. While it has side effects across multiple files, the changes are not destructive (can be reverted) and do not execute arbitrary code or external operations.

From the tool's definition Tool performs 'Update backlinks when a file is renamed' — this modifies existing data (backlinks) in markdown files to maintain consistency after a rename operation. The action is reversible (can be undone/corrected) and does not permanently destroy data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

handle_file_rename Rate-limited

handle_file_rename 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": {
    "handle_file_rename": {
      "limits": [
        {
          "counter": "handle_file_rename_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 Notemd MCP Server, so you can run agents against it safely.

FAQ

Questions about handle_file_rename

What does the handle_file_rename tool do? +

Update backlinks when a file is renamed. It is categorised as a Write tool in the Notemd 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 handle_file_rename? +

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

What risk level is handle_file_rename? +

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

Can I rate-limit handle_file_rename? +

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

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

handle_file_rename is provided by the Notemd MCP Server MCP server (jacobinwwey/notemd-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.