import { UsageService } from '../services/usage.js';
import { UsageTimePeriod } from '../config/types.js';
export declare function getUsageStatsTool(usageService: UsageService, args: Record<string, unknown>): {
    content: {
        type: string;
        text: string;
    }[];
    structuredContent: {
        period: UsageTimePeriod;
        startDate: string;
        endDate: string;
        totals: {
            requests: number;
            promptTokens: number;
            completionTokens: number;
            errors: number;
            estimatedCostUSD?: number;
        };
        usage: import("../config/types.js").DailyUsage;
        costByProvider: Record<string, number> | undefined;
    };
};
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