mcp_file_rename · ShowDoc MCP Server MCP: Risk & Policy

WHAT IT DOES

What mcp_file_rename does on ShowDoc MCP Server

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

WHY IT NEEDS A POLICY

Why mcp_file_rename needs a policy

File renaming is a write operation that reversibly modifies data (the file name/path structure) but does not delete or execute code. It has medium severity because careless renaming could break file references or project structure, but the effect is recoverable through renaming again. Confidence is 0.85 due to the non-English description, though the intent is clear from the tool name and 'mcp_' prefix pattern.

From the tool's definition Tool name 'mcp_file_rename' and description '重命名一个文件或目录' (rename a file or directory) indicate the tool modifies filesystem metadata by changing file/directory names.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mcp_file_rename Rate-limited

mcp_file_rename 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": {
    "mcp_file_rename": {
      "limits": [
        {
          "counter": "mcp_file_rename_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 ShowDoc MCP Server, so you can run agents against it safely.

FAQ

Questions about mcp_file_rename

What does the mcp_file_rename tool do? +

重命名一个文件或目录。. It is categorised as a Write tool in the ShowDoc 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 mcp_file_rename? +

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

What risk level is mcp_file_rename? +

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

Can I rate-limit mcp_file_rename? +

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

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

mcp_file_rename is provided by the ShowDoc MCP Server MCP server (yfcyfc123234/showdoc_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.