batch_replace_in_files · Claude MCP Server Integration MCP

WHAT IT DOES

What batch_replace_in_files does on Claude MCP Server Integration

AI agents use batch_replace_in_files 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 batch_replace_in_files needs a policy

This tool creates or modifies data reversibly by replacing text within files. While replacements can theoretically be undone (distinguishing it from Destructive), the batch nature means a single mistake affects multiple files, and recovering from widespread text replacements could be difficult. The Write category is appropriate as the primary function is content modification rather than deletion.

From the tool's definition Tool name 'batch_replace_in_files' and description 'ファイル内のテキストを一括置換します' (replaces text in files in batch) indicates the tool modifies file contents across multiple files. The batch operation amplifies risk by affecting numerous files simultaneously.

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

batch_replace_in_files Rate-limited

batch_replace_in_files 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": {
    "batch_replace_in_files": {
      "limits": [
        {
          "counter": "batch_replace_in_files_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 batch_replace_in_files

What does the batch_replace_in_files tool do? +

ファイル内のテキストを一括置換します. 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 batch_replace_in_files? +

Register the Claude MCP Server Integration MCP server in PolicyLayer and add a rule for batch_replace_in_files: 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 batch_replace_in_files? +

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

Can I rate-limit batch_replace_in_files? +

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

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

batch_replace_in_files 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.