/**
 * Turn Cost measurement command
 *
 * Aggregates governance metrics from Frame database:
 * - Frame count (coordination events)
 * - Token usage (from spend metadata)
 * - Time period analysis
 */
export interface TurnCostOptions {
    json?: boolean;
    /**
     * Period for metrics calculation
     * Format: ISO 8601 timestamp or duration string (e.g., "24h", "7d", "30d")
     * Default: "24h"
     */
    period?: string;
}
/**
 * Execute turncost command
 */
export declare function turncost(options?: TurnCostOptions): Promise<void>;