restore_file · LuzzyTool MCP: Risk & Policy

WHAT IT DOES

What restore_file does on LuzzyTool

AI agents use restore_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 restore_file needs a policy

This tool restores data from backups to specified locations, which is a Write operation that creates or modifies files reversibly. It is not Destructive because restoration is not irreversible (the original backup remains and files can be re-modified). It is not Read-only since it actively writes data.

From the tool's definition Tool name 'restore_file' and description state '从备份文件还原到指定位置' (restore from backup file to specified location), which modifies/overwrites file system state by restoring backed-up data to a target path.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

restore_file Rate-limited

restore_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": {
    "restore_file": {
      "limits": [
        {
          "counter": "restore_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 restore_file

What does the restore_file tool do? +

【恢复操作】从备份文件还原到指定位置。. 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 restore_file? +

Register the LuzzyTool MCP server in PolicyLayer and add a rule for restore_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 restore_file? +

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

Can I rate-limit restore_file? +

Yes. Add a rate_limit block to the restore_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 restore_file completely? +

Set action: deny in the PolicyLayer policy for restore_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 restore_file? +

restore_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.