mcp_file_create · ShowDoc MCP Server MCP: Risk & Policy

WHAT IT DOES

What mcp_file_create does on ShowDoc MCP Server

AI agents use mcp_file_create 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_create needs a policy

This tool creates new files, which is a reversible write operation. While file creation can have side effects in a system, it is not inherently destructive (files can be deleted) and does not involve code execution, data deletion, or financial transactions. The severity is medium because an AI agent could create files in unintended locations or with harmful content, but the operation itself is reversible.

From the tool's definition Tool name 'mcp_file_create' and description '创建一个新文件' (create a new file) indicate file creation capability.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mcp_file_create Rate-limited

mcp_file_create 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_create": {
      "limits": [
        {
          "counter": "mcp_file_create_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_create

What does the mcp_file_create tool do? +

创建一个新文件。. 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_create? +

Register the ShowDoc MCP Server MCP server in PolicyLayer and add a rule for mcp_file_create: 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_create? +

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

Can I rate-limit mcp_file_create? +

Yes. Add a rate_limit block to the mcp_file_create 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_create completely? +

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

mcp_file_create 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.