move_file · Helm Chart CLI MCP: Risk & Policy

WHAT IT DOES

What move_file does on Helm Chart CLI

AI agents use move_file to create or update resources in Helm Chart CLI — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Helm Chart CLI environment.

WHY IT NEEDS A POLICY

Why move_file needs a policy

Moving and renaming files are reversible modifications (the original file still exists, just relocated). This is not Destructive because the data is not deleted. However, it's higher severity than typical Write operations because moving critical Helm configuration files could break deployments or cause service disruption if the agent misuses it.

From the tool's definition Tool description states 'Move or rename files and directories. Can move files between directories' — these are write operations that modify file system structure and metadata.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

move_file Rate-limited

move_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": {
    "move_file": {
      "limits": [
        {
          "counter": "move_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 Helm Chart CLI, so you can run agents against it safely.

FAQ

Questions about move_file

What does the move_file tool do? +

Move or rename files and directories. Can move files between directories. It is categorised as a Write tool in the Helm Chart CLI MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on move_file? +

Register the Helm Chart CLI MCP server in PolicyLayer and add a rule for move_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 Helm Chart CLI. Nothing to install.

What risk level is move_file? +

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

Can I rate-limit move_file? +

Yes. Add a rate_limit block to the move_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 move_file completely? +

Set action: deny in the PolicyLayer policy for move_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 move_file? +

move_file is provided by the Helm Chart CLI MCP server (jeff-nasseri/servers). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.