file_move · Android MCP Server MCP: Risk & Policy

WHAT IT DOES

What file_move does on Android MCP Server

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

WHY IT NEEDS A POLICY

Why file_move needs a policy

File move/rename operations are reversible modifications of the filesystem. This tool creates or modifies file organization but does not permanently delete data (it prevents overwriting via auto-suffixing). On an Android device with potential access to sensitive application data, system files, and user documents, misuse could disrupt app functionality or expose/reorganize sensitive information, hence 'high' severity.

From the tool's definition Tool name 'file_move' with description stating it moves/renames files or directories ('移动/重命名文件或目录'). Automatically creates parent directories and adds suffixes to prevent overwriting existing targets.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

file_move Rate-limited

file_move 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": {
    "file_move": {
      "limits": [
        {
          "counter": "file_move_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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

FAQ

Questions about file_move

What does the file_move tool do? +

📦 移动/重命名文件或目录。自动创建父目录。目标已存在时自动加后缀防覆盖。. It is categorised as a Write tool in the Android 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 file_move? +

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

What risk level is file_move? +

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

Can I rate-limit file_move? +

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

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

file_move is provided by the Android MCP Server MCP server (wujie272/android-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.