rename_file · LuzzyTool MCP: Risk & Policy

WHAT IT DOES

What rename_file does on LuzzyTool

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

WHY IT NEEDS A POLICY

Why rename_file needs a policy

Renaming files is a Write operation—it modifies metadata reversibly and can be undone. The severity is medium because misuse could rename critical files to break applications or configurations, but the action is reversible unlike destructive operations. Confidence is high based on clear description of rename functionality.

From the tool's definition Tool description states '重命名文件或目录' (rename file or directory), which is a reversible modification operation. The phrase '只改变名称不改变位置' emphasizes it only changes the name, confirming it does not delete or permanently destroy data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

rename_file Rate-limited

rename_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": {
    "rename_file": {
      "limits": [
        {
          "counter": "rename_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 LuzzyTool, so you can run agents against it safely.

FAQ

Questions about rename_file

What does the rename_file tool do? +

【精确操作】重命名文件或目录，只改变名称不改变位置。. It is categorised as a Write tool in the LuzzyTool MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on rename_file? +

Register the LuzzyTool MCP server in PolicyLayer and add a rule for rename_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 LuzzyTool. Nothing to install.

What risk level is rename_file? +

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

Can I rate-limit rename_file? +

Yes. Add a rate_limit block to the rename_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 rename_file completely? +

Set action: deny in the PolicyLayer policy for rename_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 rename_file? +

rename_file is provided by the LuzzyTool MCP server (luzzymeow/luzzytool). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.