Get the inheritance hierarchy for a class
AI agents call get_inheritance_hierarchy to retrieve information from CodeRAG without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries code structure information (inheritance relationships) from the Neo4J knowledge graph without creating, modifying, deleting, or executing anything. It is a straightforward data retrieval operation with no blast radius if misused by an AI agent—at worst, it returns information about code relationships that are already public or internal to the codebase being analyzed.
From the tool's definition Tool name 'get_inheritance_hierarchy' and description 'Get the inheritance hierarchy for a class' indicate a retrieval operation with no side effects. The verb 'Get' and the lack of any modification, deletion, or execution language confirm read-only semantics.
Documented attack patterns abuse exactly the kind of access get_inheritance_hierarchy gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and CodeRAG, and nothing reaches the server without passing your rules. This is the rule we recommend for get_inheritance_hierarchy:
{
"version": "1",
"default": "deny",
"tools": {
"get_inheritance_hierarchy": {}
}
}get_inheritance_hierarchy is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the inheritance hierarchy for a class. It is categorised as a Read tool in the CodeRAG MCP Server, which means it retrieves data without modifying state.
Register the CodeRAG MCP server in PolicyLayer and add a rule for get_inheritance_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 CodeRAG. Nothing to install.
get_inheritance_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_inheritance_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_inheritance_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_inheritance_hierarchy is provided by the CodeRAG MCP server (jonnoc/coderag). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from CodeRAG, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
38 CodeRAG tools catalogued and risk-classified — across an index of 43,000+ MCP servers.