get_method_callers
Identify methods that invoke a specified function to analyze code dependencies and trace call relationships in software systems.
Instructions
Retrieves a list of methods that call the specified method
@param method_full_name: The fully qualified name of the source method(e.g., com.android.nfc.NfcService$6.onReceive:void(android.content.Context,android.content.Intent))
@return: List of full name, name, signature and id of methods called by the source methodInput Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| method_full_name | Yes |
Implementation Reference
- server_tools.py:47-55 (handler)Handler function for 'get_method_callers' tool. Takes method_full_name, queries Joern server via joern_remote for callers, and returns extracted list using extract_list. The decorator @joern_mcp.tool() registers it as an MCP tool. The docstring provides input/output schema details.
@joern_mcp.tool() def get_method_callers(method_full_name: str) -> list[str]: """Retrieves a list of methods that call the specified method @param method_full_name: The fully qualified name of the source method(e.g., com.android.nfc.NfcService$6.onReceive:void(android.content.Context,android.content.Intent)) @return: List of full name, name, signature and id of methods called by the source method """ responses = joern_remote(f'get_method_callers("{method_full_name}")') return extract_list(responses) - server_tools.py:47-47 (registration)Decorator that registers the get_method_callers function as an MCP tool with the joern_mcp FastMCP instance.
@joern_mcp.tool() - server.py:38-71 (helper)Helper function joern_remote used by get_method_callers to execute the Joern query 'get_method_callers("{method_full_name}")' against the Joern server.
def joern_remote(query): """ Execute remote query and return results Parameters: query -- The query string to execute Returns: Returns the server response stdout content on success Returns None on failure, error message will be output to stderr """ data = {"query": query} headers = {'Content-Type': 'application/json'} try: response = requests.post( f'http://{server_endpoint}/query-sync', data=json.dumps(data), headers=headers, auth=basic_auth, timeout=timeout ) response.raise_for_status() result = response.json() return remove_ansi_escape_sequences(result.get('stdout', '')) except requests.exceptions.RequestException as e: sys.stderr.write(f"Request Error: {str(e)}\n") except json.JSONDecodeError: sys.stderr.write("Error: Invalid JSON response\n") return None