cleanup_material_function
A destructive tool on the Unreal- MCP server.
This record as markdown: /tools/aadeshrao123-unreal-mcp/cleanup-material-function.md
What cleanup_material_function does on Unreal-MCP
AI agents call cleanup_material_function to permanently remove resources in Unreal-MCP, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why cleanup_material_function is rated Critical
The term 'cleanup' commonly implies irreversible removal or deletion of resources. In the context of Unreal Engine material functions, this could mean deleting unused nodes, connections, or entire material functions. However, the description is empty, which lowers confidence.
From the tool's definition Tool name: 'cleanup_material_function' — the word 'cleanup' suggests removal or deletion of material function data in Unreal Engine 5.
Attacks that exploit this kind of access
The rule that runs cleanup_material_function 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 cleanup_material_function, this is the rule to start with:
cleanup_material_function is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Unreal-MCP, apply this rule, and every cleanup_material_function call is checked against it from then on.
Questions about cleanup_material_function
cleanup_material_function is a destructive tool on the Unreal MCP server. It is categorised as a Destructive tool in the Unreal-MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Unreal MCP server in PolicyLayer and add a rule for cleanup_material_function: 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 Unreal-MCP. Nothing to install.
cleanup_material_function is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the cleanup_material_function 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 cleanup_material_function. 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.
cleanup_material_function is provided by the Unreal MCP server (aadeshrao123/unreal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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