folders_rename · Apple Notes MCP: Risk & Policy

WHAT IT DOES

What folders_rename does on Apple Notes MCP

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

WHY IT NEEDS A POLICY

Why folders_rename needs a policy

Renaming a folder modifies existing data (its name/identifier association) but is reversible; the folder contents and structure remain intact. This is a Write operation rather than Destructive (no data loss) or Read (causes mutation). Severity is medium because misuse could rename system folders or important organizational structures, causing user confusion, but the action can be undone.

From the tool's definition Tool description states 'Rename a folder by id' — renaming is a reversible modification of metadata/structure.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

folders_rename Rate-limited

folders_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": {
    "folders_rename": {
      "limits": [
        {
          "counter": "folders_rename_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Apple Notes MCP, so you can run agents against it safely.

FAQ

Questions about folders_rename

What does the folders_rename tool do? +

Rename a folder by id. It is categorised as a Write tool in the Apple Notes 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 folders_rename? +

Register the Apple Notes MCP server in PolicyLayer and add a rule for folders_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 Apple Notes MCP. Nothing to install.

What risk level is folders_rename? +

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

Can I rate-limit folders_rename? +

Yes. Add a rate_limit block to the folders_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 folders_rename completely? +

Set action: deny in the PolicyLayer policy for folders_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 folders_rename? +

folders_rename is provided by the Apple Notes MCP server (renatoaraujo/apple-notes-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.