/**
 * @hidden
 */
export interface ContextUsage {
    inputTokens: number;
    outputTokens: number;
    aigneHubCredits: number;
    creditPrefix?: "$" | "€" | "¥";
    agentCalls: number;
    duration: number;
    /** Number of tokens written to cache (first time caching) */
    cacheCreationInputTokens: number;
    /** Number of tokens read from cache (cache hit) */
    cacheReadInputTokens: number;
}
/**
 * @hidden
 */
export declare function newEmptyContextUsage(): ContextUsage;
/**
 * @hidden
 */
export interface ContextLimits {
    maxTokens?: number;
    maxAgentInvokes?: number;
    timeout?: number;
}
export declare function mergeContextUsage(usage: ContextUsage, additional: Partial<ContextUsage>): void;