change_dir · Command Line Interface Enhancer MCP

WHAT IT DOES

What change_dir does on Command Line Interface Enhancer

AI agents invoke change_dir to trigger actions in Command Line Interface Enhancer. 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.

WHY IT NEEDS A POLICY

Why change_dir needs a policy

Changing the working directory affects the execution context of all subsequent commands on the server. While it does not directly delete or create data, it is a stateful operation that alters the environment in which other tools (like run_command) execute, making it an Execute-category action. Misuse could redirect operations to sensitive directories, elevating risk to medium.

From the tool's definition Change the directory to specified string relative and absolute paths are supported

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

change_dir Rate-limited

change_dir 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": {
    "change_dir": {
      "limits": [
        {
          "counter": "change_dir_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Command Line Interface Enhancer, so you can run agents against it safely.

FAQ

Questions about change_dir

What does the change_dir tool do? +

Change the directory to specified string relative and absolute paths are supported. It is categorised as a Execute tool in the Command Line Interface Enhancer MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on change_dir? +

Register the Command Line Interface Enhancer MCP server in PolicyLayer and add a rule for change_dir: 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 Command Line Interface Enhancer. Nothing to install.

What risk level is change_dir? +

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

Can I rate-limit change_dir? +

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

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

change_dir is provided by the Command Line Interface Enhancer MCP server (jon2allen/mcp_command_serv). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.