Find all missing/broken object references and missing scripts in the scene. Essential for cleanup and debugging.
AI agents call unity_search_missing_references to retrieve information from Unity MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs scene analysis to detect broken references and missing scripts, which is a diagnostic read operation. It has no side effects: it does not modify assets, delete data, execute scripts, or alter project state. While useful for debugging, misuse by an AI agent would only surface information about existing problems, not create new ones.
From the tool's definition Tool description states it 'finds' missing references and missing scripts—a search/query operation with no modification, creation, deletion, or execution of code. The verb 'find' indicates data retrieval only.
Documented attack patterns abuse exactly the kind of access unity_search_missing_references gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Unity MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for unity_search_missing_references:
{
"version": "1",
"default": "deny",
"tools": {
"unity_search_missing_references": {}
}
}unity_search_missing_references is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Find all missing/broken object references and missing scripts in the scene. Essential for cleanup and debugging. 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_search_missing_references: 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_search_missing_references 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_search_missing_references 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_search_missing_references. 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_search_missing_references 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.
Deterministic rules across all 324 Unity MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
324 Unity MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.