create_file_version · Claude MCP Server Integration MCP

WHAT IT DOES

What create_file_version does on Claude MCP Server Integration

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

WHY IT NEEDS A POLICY

Why create_file_version needs a policy

This tool creates file versions, which is a reversible write operation that modifies filesystem metadata or creates new version entries. It does not delete data (thus not Destructive), does not execute arbitrary code (thus not Execute), and does not involve financial transactions.

From the tool's definition Tool name 'create_file_version' and description 'ファイルのバージョンを作成します' (creates a file version) indicates it modifies filesystem state by creating version records or snapshots of files.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_file_version Rate-limited

create_file_version 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": {
    "create_file_version": {
      "limits": [
        {
          "counter": "create_file_version_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 Claude MCP Server Integration, so you can run agents against it safely.

FAQ

Questions about create_file_version

What does the create_file_version tool do? +

ファイルのバージョンを作成します. It is categorised as a Write tool in the Claude MCP Server Integration MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_file_version? +

Register the Claude MCP Server Integration MCP server in PolicyLayer and add a rule for create_file_version: 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 Claude MCP Server Integration. Nothing to install.

What risk level is create_file_version? +

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

Can I rate-limit create_file_version? +

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

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

create_file_version is provided by the Claude MCP Server Integration MCP server (mokemoke0821/claude-mcp-integration). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.