List all UMAMaterial assets in the project with their channel counts. Useful for choosing the right material when creating slots and overlays.
AI agents call unity_uma_list_uma_materials 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 asset enumeration within a Unity project. It retrieves metadata about UMAMaterial assets (a type used in character customization systems) and returns informational data about them. There are no side effects, no code execution, no data modification, and no irreversible actions.
From the tool's definition Tool name contains 'list' and description states 'List all UMAMaterial assets in the project with their channel counts.' This is a pure query operation that retrieves and enumerates existing assets without modifying or executing anything.
Documented attack patterns abuse exactly the kind of access unity_uma_list_uma_materials 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_uma_list_uma_materials:
{
"version": "1",
"default": "deny",
"tools": {
"unity_uma_list_uma_materials": {}
}
}unity_uma_list_uma_materials is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all UMAMaterial assets in the project with their channel counts. Useful for choosing the right material when creating slots and overlays. 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_uma_list_uma_materials: 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_uma_list_uma_materials 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_uma_list_uma_materials 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_uma_list_uma_materials. 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_uma_list_uma_materials 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.