generate_project_files · Unreal MCP: Risk & Policy

WHAT IT DOES

What generate_project_files does on Unreal

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

WHY IT NEEDS A POLICY

Why generate_project_files needs a policy

This tool modifies project files in a way that affects the development environment setup but does not execute arbitrary code, delete data irreversibly, or trigger financial transactions. Regenerating project files is a reversible write operation that could impact build systems and IDE configurations if misused by an agent, hence medium severity.

From the tool's definition Tool description states 'Regenerate IDE project files (Visual Studio, Xcode, Rider)', which involves creating or modifying project configuration files. The action is reversible—regenerated files can be replaced or restored.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_project_files Rate-limited

generate_project_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": {
    "generate_project_files": {
      "limits": [
        {
          "counter": "generate_project_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 Unreal, so you can run agents against it safely.

FAQ

Questions about generate_project_files

What does the generate_project_files tool do? +

Regenerate IDE project files (Visual Studio, Xcode, Rider). It is categorised as a Write tool in the Unreal MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on generate_project_files? +

Register the Unreal MCP server in PolicyLayer and add a rule for generate_project_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 Unreal. Nothing to install.

What risk level is generate_project_files? +

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

Can I rate-limit generate_project_files? +

Yes. Add a rate_limit block to the generate_project_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 generate_project_files completely? +

Set action: deny in the PolicyLayer policy for generate_project_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 generate_project_files? +

generate_project_files is provided by the Unreal MCP server (sam-david/unreal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.