import type { SqliteAdapter as Database } from '../db/sqlite-adapter.js';
import type { Agent, CostBasis } from './agents.js';
import type { Period } from '../types/index.js';
export interface SavingsSummary {
    period: Period;
    api_equivalent_usd: number;
    subscription_fee_usd: number;
    included_consumed_usd: number;
    on_demand_usd: number;
    saved_usd: number;
    by_agent: Record<string, Partial<SavingsSummary>>;
}
/** saved = max(0, api_equivalent - on_demand - prorated_subscription_fee) */
export declare function computeSavedUsd(apiEquivalent: number, onDemand: number, subscriptionFee: number): number;
export declare function querySavingsSummary(db: Database, period: Period, agent?: Agent): SavingsSummary;
export declare function defaultCostBasisForAgent(agent: Agent): CostBasis;
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