encrypt_file · Claude MCP Server Integration MCP

WHAT IT DOES

What encrypt_file does on Claude MCP Server Integration

AI agents use encrypt_file 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 encrypt_file needs a policy

Encrypting a file modifies it or produces a new encrypted version, which is a write operation. It can be destructive if it overwrites the original in place without backup, but the description does not explicitly state the original is deleted or overwritten irreversibly.

From the tool's definition ファイルを暗号化します（AES暗号化、複数アルゴリズム対応）— 'encrypts files' using AES and multiple algorithms

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

encrypt_file Rate-limited

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

FAQ

Questions about encrypt_file

What does the encrypt_file tool do? +

ファイルを暗号化します（AES暗号化、複数アルゴリズム対応）. 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 encrypt_file? +

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

What risk level is encrypt_file? +

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

Can I rate-limit encrypt_file? +

Yes. Add a rate_limit block to the encrypt_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 encrypt_file completely? +

Set action: deny in the PolicyLayer policy for encrypt_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 encrypt_file? +

encrypt_file 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.