import type { Express } from 'express';
export declare const AGENT_ACTIVITY_WINDOW_MS = 60000;
export declare class AgentActivityTracker {
    private readonly now;
    private lastActivityAt;
    constructor(now?: () => number);
    recordActivity(): void;
    isActiveInLastMinute(): boolean;
}
export declare function registerAgentActivityRoute(app: Express, tracker: AgentActivityTracker): void;