Get the methods of a class by its fully qualified name
AI agents call get_class_methods_by_class_full_name to retrieve information from Joern MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata about class methods (their names, signatures, etc.) from a code analysis database. It performs a query operation with no side effects, no code execution, no data modification, and no destructive actions. It is a pure read operation on static code analysis data.
From the tool's definition Tool name 'get_class_methods_by_class_full_name' and description 'Get the methods of a class by its fully qualified name' indicate a retrieval operation that queries code structure information without modification or execution.
Documented attack patterns abuse exactly the kind of access get_class_methods_by_class_full_name gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Joern MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_class_methods_by_class_full_name:
{
"version": "1",
"default": "deny",
"tools": {
"get_class_methods_by_class_full_name": {}
}
}get_class_methods_by_class_full_name 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 methods of a class by its fully qualified name. It is categorised as a Read tool in the Joern MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Joern MCP Server MCP server in PolicyLayer and add a rule for get_class_methods_by_class_full_name: 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 Joern MCP Server. Nothing to install.
get_class_methods_by_class_full_name 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_methods_by_class_full_name 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_methods_by_class_full_name. 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_methods_by_class_full_name is provided by the Joern MCP Server MCP server (sfncat/mcp-joern). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 21 Joern MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
21 Joern MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.