modify_script · GameDevBench MCP: Risk & Policy

WHAT IT DOES

What modify_script does on GameDevBench MCP

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

WHY IT NEEDS A POLICY

Why modify_script needs a policy

modify_script creates or alters script files, which is reversible (Write category) but has high severity because malicious script modifications in a game engine context could alter game behavior, introduce vulnerabilities, or compromise the development environment. Confidence is slightly reduced due to the empty description, but the tool name and sibling context make the classification clear.

From the tool's definition Tool name 'modify_script' indicates modification of scripts. The description is empty, providing no details about scope or safeguards.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

modify_script Rate-limited

modify_script 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": {
    "modify_script": {
      "limits": [
        {
          "counter": "modify_script_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 GameDevBench MCP, so you can run agents against it safely.

FAQ

Questions about modify_script

What does the modify_script tool do? +

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

How do I enforce a policy on modify_script? +

Register the GameDevBench MCP server in PolicyLayer and add a rule for modify_script: 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 GameDevBench MCP. Nothing to install.

What risk level is modify_script? +

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

Can I rate-limit modify_script? +

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

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

modify_script is provided by the GameDevBench MCP server (seeleai/gamedevbench-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.