import { Resource } from "../resource.js";
export type UsageSummary = {
    requestCount: number;
    totalInputTokens: number;
    totalOutputTokens: number;
    totalCostUsd: number;
    avgLatencyMs: number;
};
export type UsagePeriod = "day" | "week" | "month";
export type CostCenterUsage = {
    cost_center: string;
    request_count: number;
    total_input_tokens: number;
    total_output_tokens: number;
    total_cost_usd: number;
    avg_latency_ms: number;
};
export type OwnerUsage = {
    owner_id: string;
    request_count: number;
    total_input_tokens: number;
    total_output_tokens: number;
    total_cost_usd: number;
    avg_latency_ms: number;
};
export declare class Usage extends Resource {
    /** Get usage summary for the given period. */
    summary(period?: UsagePeriod): Promise<{
        period: string;
        since: string;
        data: UsageSummary[];
    }>;
    /** Get aggregated spend by cost center. */
    byCostCenter(period?: UsagePeriod): Promise<{
        period: string;
        since: string;
        data: CostCenterUsage[];
    }>;
    /** Get aggregated spend by agent owner. */
    byOwner(period?: UsagePeriod): Promise<{
        period: string;
        since: string;
        data: OwnerUsage[];
    }>;
}