multireplace_lines_in_file · MCP File Editor Server MCP

WHAT IT DOES

What multireplace_lines_in_file does on MCP File Editor Server

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

WHY IT NEEDS A POLICY

Why multireplace_lines_in_file needs a policy

This tool modifies file content by replacing multiple line ranges, which is a write operation. While it alters existing data, it is a targeted replacement rather than irreversible deletion, making it Write rather than Destructive. However, severity is high because it can make wide-ranging modifications across multiple sections of a file simultaneously, and misuse could corrupt important files at scale.

From the tool's definition Replace multiple line ranges in a file. All line numbers and content refer to the original file state.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

multireplace_lines_in_file Rate-limited

multireplace_lines_in_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": {
    "multireplace_lines_in_file": {
      "limits": [
        {
          "counter": "multireplace_lines_in_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 MCP File Editor Server, so you can run agents against it safely.

FAQ

Questions about multireplace_lines_in_file

What does the multireplace_lines_in_file tool do? +

Replace multiple line ranges in a file. All line numbers and content refer to the original file state. It is categorised as a Write tool in the MCP File Editor 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 multireplace_lines_in_file? +

Register the MCP File Editor Server MCP server in PolicyLayer and add a rule for multireplace_lines_in_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 MCP File Editor Server. Nothing to install.

What risk level is multireplace_lines_in_file? +

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

Can I rate-limit multireplace_lines_in_file? +

Yes. Add a rate_limit block to the multireplace_lines_in_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 multireplace_lines_in_file completely? +

Set action: deny in the PolicyLayer policy for multireplace_lines_in_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 multireplace_lines_in_file? +

multireplace_lines_in_file is provided by the MCP File Editor Server MCP server (pwilkin/mcp-file-edit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.