/**
 * Log formatting utilities for Gateway service.
 */
/**
 * Safely formats tool arguments for logging with circular reference handling and size limits.
 *
 * This method provides safe JSON serialization of tool arguments for logging purposes,
 * handling circular references by replacing them with '[Circular Reference]' and
 * truncating large strings and outputs to prevent log noise and performance issues.
 *
 * @param {unknown} args - Tool arguments to format
 * @returns {string} Safe formatted string representation of the arguments
 */
export declare function formatToolArgs(args: unknown): string;
/**
 * Safely formats tool responses for logging with size limits.
 *
 * This method provides safe JSON serialization of tool responses for logging purposes,
 * truncating large outputs to prevent log noise and performance issues while maintaining
 * readability through pretty-printed JSON formatting.
 *
 * @param {unknown} response - Tool response to format
 * @returns {string} Safe formatted string representation of the response
 */
export declare function formatToolResponse(response: unknown): string;
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