decompress · ZIP MCP Server MCP: Risk & Policy

WHAT IT DOES

What decompress does on ZIP MCP Server

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

WHY IT NEEDS A POLICY

Why decompress needs a policy

Decompression creates new files and directories on the filesystem. It is reversible (extracted files can be deleted), so it falls under Write rather than Destructive. However, it could overwrite existing files depending on implementation, which raises the severity to medium. No code execution or financial impact is implied by the description alone.

From the tool's definition 'Decompress local ZIP file to specified directory' — extracts and writes files to a target directory

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

decompress Rate-limited

decompress 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": {
    "decompress": {
      "limits": [
        {
          "counter": "decompress_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 ZIP MCP Server, so you can run agents against it safely.

FAQ

Questions about decompress

What does the decompress tool do? +

Decompress local ZIP file to specified directory. It is categorised as a Write tool in the ZIP 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 decompress? +

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

What risk level is decompress? +

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

Can I rate-limit decompress? +

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

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

decompress is provided by the ZIP MCP Server MCP server (loscolmebrothers/zip-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.