get_class_hierarchy

THE RISK

Low Risk

Why get_class_hierarchy needs a policy

This tool performs static code analysis to retrieve class relationship data. It has no side effects, does not execute code, create/modify/delete files, or trigger external operations. It falls squarely into the Read category as a retrieval/query operation. The severity is low because misuse would only expose existing code structure information, with minimal blast radius.

From the tool's definition Tool retrieves and queries class inheritance hierarchy information from a C++ codebase using libclang. The description states it 'Get[s] complete inheritance hierarchy' — a read-only operation that returns semantic information about code structure without…

Documented attack patterns abuse exactly the kind of access get_class_hierarchy gives an agent:

POLICY

How to control get_class_hierarchy

PolicyLayer is an MCP gateway — it sits between your AI agents and C++ MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_class_hierarchy:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_class_hierarchy": {}
  }
}

get_class_hierarchy is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register C++ MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

Related tools and policies

More C++ MCP Server tools

Execute refresh_project Manually refresh/re-parse project files to detect changes Write set_project_directory Set the project directory to analyze (use this first before other commands) Read find_callees Find all functions called by a specific function Read find_callers Find all functions that call a specific function Read find_in_file Search for symbols within a specific file Read get_call_path Find call paths from one function to another Read get_class_info Get detailed information about a specific class Read get_derived_classes Get all classes that inherit from a given base class

All 14 C++ MCP Server tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about get_class_hierarchy

What does the get_class_hierarchy tool do? +

Get complete inheritance hierarchy for a C++ class. It is categorised as a Read tool in the C++ MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_class_hierarchy? +

Register the C++ MCP Server 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 C++ MCP Server. Nothing to install.

What risk level is get_class_hierarchy? +

get_class_hierarchy is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_class_hierarchy? +

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.

How do I block get_class_hierarchy completely? +

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.

What MCP server provides get_class_hierarchy? +

get_class_hierarchy is provided by the C++ MCP Server MCP server (kandrwmrtn/cplusplus_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every C++ MCP Server tool call.

Start from C++ MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →