verse_write_file

A write tool on the Uefn MCP server.

SERVERUefn SOURCEquangdang46/uefn-verse-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/quangdang46-uefn-verse-mcp/verse-write-file.md

WHAT IT DOES

What verse_write_file does on Uefn

AI agents use verse_write_file to create or update resources in Uefn, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Uefn environment.

RISK

Why verse_write_file is rated Medium

File writing is a reversible modification operation (Write category). Severity is high because unauthorized file writes in a live editor could corrupt project state, introduce malicious code into game logic, or disrupt development workflows. The empty description lowers confidence slightly, but the name is unambiguous enough to justify high confidence.

From the tool's definition Tool name 'verse_write_file' indicates file writing capability. Description is empty, but the name strongly suggests creating or modifying files in the UEFN (Unreal Editor for Fortnite) environment.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs verse_write_file safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Uefn, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For verse_write_file, this is the rule to start with:

verse_write_file Rate-limited

verse_write_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": {
    "verse_write_file": {
      "limits": [
        {
          "counter": "verse_write_file_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Uefn, apply this rule, and every verse_write_file call is checked against it from then on.

FAQ

Questions about verse_write_file

What does the verse_write_file tool do? +

verse_write_file is a write tool on the Uefn MCP server. It is categorised as a Write tool in the Uefn MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on verse_write_file? +

Register the Uefn MCP server in PolicyLayer and add a rule for verse_write_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 Uefn. Nothing to install.

What risk level is verse_write_file? +

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

Can I rate-limit verse_write_file? +

Yes. Add a rate_limit block to the verse_write_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 verse_write_file completely? +

Set action: deny in the PolicyLayer policy for verse_write_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 verse_write_file? +

verse_write_file is provided by the Uefn MCP server (quangdang46/uefn-verse-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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