create_blueprint

What create_blueprint does on Unreal-MCP

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

Why create_blueprint is rated Medium

Creating a blueprint in Unreal Engine 5 is a reversible write operation that modifies the project state by adding new assets. It does not execute arbitrary code, delete data, or trigger financial transactions. The high severity reflects that an AI agent could create many unwanted blueprints, potentially cluttering the project or overwriting existing assets if not careful with naming.

From the tool's definition Tool name 'create_blueprint' indicates creation of a new blueprint artifact in Unreal Engine. Sibling tools like 'add_blueprint_node', 'add_component_to_blueprint', and 'add_event_node' all modify blueprint structures, establishing the pattern that these are…

The rule that runs create_blueprint safely

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

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_blueprint": {
      "limits": [
        {
          "counter": "create_blueprint_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

Questions about create_blueprint