Show the inheritance tree for a class.
AI agents call get_class_hierarchy to retrieve information from Unreal Source without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays existing information about class hierarchies in the Unreal Engine source codebase. It performs no side effects, makes no modifications, executes no code, and triggers no external operations. The blast radius of misuse is minimal—an AI agent cannot cause harm by querying class hierarchies.
From the tool's definition Tool name 'get_class_hierarchy' and description 'Show the inheritance tree for a class' indicate a query operation that retrieves and displays structural metadata about class inheritance without modifying, executing, or deleting any data.
Attacks that exploit this kind of access
Show the inheritance tree for a class. It is categorised as a Read tool in the Unreal Source MCP Server, which means it retrieves data without modifying state.
Register the Unreal Source MCP server in PolicyLayer and add a rule for get_class_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 Unreal Source. Nothing to install.
get_class_hierarchy 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 get_class_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.
Set action: deny in the PolicyLayer policy for get_class_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.
get_class_hierarchy is provided by the Unreal Source MCP server (tumourlove/deprecated-unreal-source-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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