show_in_folder

Show a file in the system file manager (Finder on macOS, Explorer on Windows)

SERVERCoWork OS SOURCECoWork-OS/CoWork-OS

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/cowork-os/show-in-folder.md

WHAT IT DOES

What show_in_folder does on CoWork OS

AI agents invoke show_in_folder to trigger actions in CoWork OS. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why show_in_folder is rated High

This tool triggers an external OS operation — opening the system file manager and revealing a specific file. It doesn't read/write data itself, but it executes an OS-level action (launching/focusing Finder or Explorer). The blast radius is low since it's a benign UI action with no data modification or deletion.

From the tool's definition Show a file in the system file manager (Finder on macOS, Explorer on Windows)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs show_in_folder safely

PolicyLayer is an MCP gateway: it sits between your AI agents and CoWork OS, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For show_in_folder, this is the rule to start with:

show_in_folder Rate-limited

show_in_folder stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "show_in_folder": {
      "limits": [
        {
          "counter": "show_in_folder_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect CoWork OS, apply this rule, and every show_in_folder call is checked against it from then on.

FAQ

Questions about show_in_folder

What does the show_in_folder tool do? +

Show a file in the system file manager (Finder on macOS, Explorer on Windows). It is categorised as a Execute tool in the CoWork OS MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on show_in_folder? +

Register the CoWork OS MCP server in PolicyLayer and add a rule for show_in_folder: 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 CoWork OS. Nothing to install.

What risk level is show_in_folder? +

show_in_folder is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit show_in_folder? +

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

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

show_in_folder is provided by the CoWork OS MCP server (CoWork-OS/CoWork-OS). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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