unity_prefab_get_hierarchy

Get the full hierarchy tree of a prefab asset directly from disk â€” no scene instance needed. Shows all GameObjects, components, and nested children inside the prefab.

SERVERUnity MCP Server SOURCEanklebreaker-studio/unity-mcp-server

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/anklebreaker-studio-unity-mcp-server/unity-prefab-get-hierarchy.md

WHAT IT DOES

What unity_prefab_get_hierarchy does on Unity MCP Server

AI agents call unity_prefab_get_hierarchy to retrieve information from Unity MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why unity_prefab_get_hierarchy is rated Low

This tool performs data retrieval of prefab structure metadata without creating, modifying, deleting, or executing any operations. It is purely informational, examining the composition and hierarchy of existing prefab assets. The blast radius of misuse is minimal — an AI agent could only gather information about project structure, not cause harm or alter state.

From the tool's definition Tool description explicitly states 'Get the full hierarchy tree' and 'Shows all GameObjects, components, and nested children' — these are read/retrieval operations with no modification capabilities.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs unity_prefab_get_hierarchy safely

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

unity_prefab_get_hierarchy Allowed

unity_prefab_get_hierarchy is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "unity_prefab_get_hierarchy": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about unity_prefab_get_hierarchy

What does the unity_prefab_get_hierarchy tool do? +

Get the full hierarchy tree of a prefab asset directly from disk â€” no scene instance needed. Shows all GameObjects, components, and nested children inside the prefab. It is categorised as a Read tool in the Unity MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on unity_prefab_get_hierarchy? +

Register the Unity MCP Server MCP server in PolicyLayer and add a rule for unity_prefab_get_hierarchy: 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 Unity MCP Server. Nothing to install.

What risk level is unity_prefab_get_hierarchy? +

unity_prefab_get_hierarchy is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit unity_prefab_get_hierarchy? +

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

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

unity_prefab_get_hierarchy is provided by the Unity MCP Server MCP server (anklebreaker-studio/unity-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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