extract_file · RemoteZip MCP Server MCP: Risk & Policy

WHAT IT DOES

What extract_file does on RemoteZip MCP Server

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

WHY IT NEEDS A POLICY

Why extract_file needs a policy

This tool writes data to the local filesystem by extracting a file from a remote archive. It creates new files on disk, which is a reversible write operation (files can be deleted afterward). It does not delete or overwrite existing data inherently, nor does it execute code or move money.

From the tool's definition Extract a specific file from a remote zip archive to local storage

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

extract_file Rate-limited

extract_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": {
    "extract_file": {
      "limits": [
        {
          "counter": "extract_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 RemoteZip MCP Server, so you can run agents against it safely.

FAQ

Questions about extract_file

What does the extract_file tool do? +

Extract a specific file from a remote zip archive to local storage. It is categorised as a Write tool in the RemoteZip 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 extract_file? +

Register the RemoteZip MCP Server MCP server in PolicyLayer and add a rule for extract_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 RemoteZip MCP Server. Nothing to install.

What risk level is extract_file? +

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

Can I rate-limit extract_file? +

Yes. Add a rate_limit block to the extract_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 extract_file completely? +

Set action: deny in the PolicyLayer policy for extract_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 extract_file? +

extract_file is provided by the RemoteZip MCP Server MCP server (yuriyo/remotezip-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.