export type StoredProviderUsageStatus = 'reported' | 'unavailable';
export interface StoredProviderUsage {
    eventId: string;
    occurredAt: string;
    itemId: string;
    runtimeKind: string;
    model?: string;
    accountId?: string;
    status: StoredProviderUsageStatus;
    inputTokens?: number;
    cacheReadInputTokens?: number;
    cacheCreationInputTokens?: number;
    outputTokens?: number;
    reasoningOutputTokens?: number;
    totalTokens?: number;
}
interface StoredCoverage {
    coverageStartedAt?: string;
}
export declare class AgentTokenUsageStore {
    private readonly path;
    private readonly writeRoot;
    constructor(agentId: string);
    initialize(coverageStartedAt: string): Promise<StoredCoverage>;
    insert(record: StoredProviderUsage): Promise<{
        inserted: boolean;
    }>;
    listBetween(fromUtc: string, throughUtc: string): Promise<{
        coverageStartedAt?: string;
        records: StoredProviderUsage[];
    }>;
    private withDatabase;
    private readCoverageFrom;
}
export {};
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