unity_prefab_get_properties
Read all serialized properties of a component on a GameObject inside a prefab asset — no scene instance needed. Use prefabPath to target nested children (e.g.
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What unity_prefab_get_properties does on Unity MCP Server
AI agents call unity_prefab_get_properties 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.
Why unity_prefab_get_properties is rated Low
This tool retrieves and queries data from prefab assets without creating, modifying, deleting, or executing any operations. It has no side effects beyond data retrieval, fitting the Read category definition. Severity is low because reading properties poses minimal risk even if misused by an AI agent.
From the tool's definition Tool name contains 'get_properties' and description states 'Read all serialized properties of a component on a GameObject inside a prefab asset'. The action is purely retrieval with 'no scene instance needed' and no modifications occur.
Attacks that exploit this kind of access
The rule that runs unity_prefab_get_properties 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_properties, this is the rule to start with:
unity_prefab_get_properties is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Unity MCP Server, apply this rule, and every unity_prefab_get_properties call is checked against it from then on.
Questions about unity_prefab_get_properties
Read all serialized properties of a component on a GameObject inside a prefab asset — no scene instance needed. Use prefabPath to target nested children (e.g. It is categorised as a Read tool in the Unity MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Unity MCP Server MCP server in PolicyLayer and add a rule for unity_prefab_get_properties: 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.
unity_prefab_get_properties is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the unity_prefab_get_properties 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.
Set action: deny in the PolicyLayer policy for unity_prefab_get_properties. 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.
unity_prefab_get_properties 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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