add_statetree_evaluator

What add_statetree_evaluator does on Unreal-MCP

AI agents use add_statetree_evaluator 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 add_statetree_evaluator is rated Medium

The tool performs a create/modify operation ('add_') on StateTree evaluators within the Unreal Editor. This is a Write action as it introduces new editor content that can be subsequently modified or removed. The empty description reduces confidence slightly, but the naming pattern and server context clearly indicate asset creation rather than deletion, execution, or data retrieval.

From the tool's definition Tool name 'add_statetree_evaluator' indicates adding/creating a component in Unreal Engine's StateTree system. The 'add_' prefix and context of 280 editor commands across blueprints, materials, and VFX suggest this creates or modifies editor assets reversibly.

The rule that runs add_statetree_evaluator 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 add_statetree_evaluator, this is the rule to start with:

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

Questions about add_statetree_evaluator