// MCP TOOL REFERENCE

JOERN MCP SERVER TOOLS

21 tools from the Joern MCP Server MCP Server, categorised by risk level.

// ALL 21 JOERN MCP SERVER TOOLS

READ 21 tools

Read check_connection Check if the Joern MCP plugin is running Read find_flows_from_method_params_to_sink_method find_flows_from_method_params_to_sink_method Read find_flows_from_param_index_to_sink_call find_flows_from_param_index_to_sink_call Read find_flows_from_source_call_to_sink_call find_flows_from_source_call_to_sink_call Read get_call_code_by_id Get the source code of a specific call node from the loaded CPG by the call id Read get_calls_in_method_by_method_full_name Get the calls info by the method full name which the call is in the method Read get_class_full_name_by_id Retrieves the fully name of a class by its ID Read get_class_methods_by_class_full_name Get the methods of a class by its fully qualified name Read get_derived_classes_by_class_full_name Get the derived classes of a class Read get_help Get help information from joern server Read get_method_by_call_id Get the method info by the call id which the call is in the method Read get_method_callees get_method_callees Read get_method_callers get_method_callers Read get_method_code_by_class_full_name_and_method_name get_method_code_by_class_full_name_and_method_name Read get_method_code_by_full_name get_method_code_by_full_name Read get_method_code_by_id Get the code of a method by its class full name and method name Read get_method_full_name_by_id get_method_full_name_by_id Read get_parent_classes_by_class_full_name Get the parent classes of a class Read get_referenced_method_full_name_by_call_id Get the method info by the call id which the call is referenced the method Read load_cpg Loads a CPG from a file if the cpg is not loaded or the cpg is not the same as the filepath. Read ping Checks if the Joern server is running and responsive by querying its version

// FAQ

How many tools does the Joern MCP Server MCP server have? +

The Joern MCP Server MCP server exposes 21 tools across 1 categories: Read.

How do I enforce policies on Joern MCP Server tools? +

Route the Joern MCP Server server through the PolicyLayer gateway. Define allow, deny, or approval rules per tool in the dashboard; they are enforced on every call before it reaches the server.

What risk categories do Joern MCP Server tools fall into? +

Joern MCP Server tools are categorised as Read (21). Each category has a recommended default policy.

Enforce policy on every Joern MCP Server tool call.

Deterministic rules across all 21 Joern MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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42,500+ MCP servers and 110,000+ tools scanned and risk-classified.