import type { MetricsEntry } from '../memory/MetricsCollector.ts';
export interface CostRollup {
    provider: string;
    costUsd: number;
    tokens: number;
}
export interface MetricsSnapshot {
    members: MetricsEntry[];
    costs: CostRollup[];
    totalCostUsd: number;
    totalTokens: number;
}
/** Reads the local metrics and cost ledgers into one snapshot. Local-only
 *  source of truth — the exporters only re-shape it, never collect remotely. */
export declare function collectSnapshot(cwd: string): MetricsSnapshot;
/**
 * Renders the snapshot as Prometheus text exposition format (pull model: the
 * snapshot is read at scrape time, so there is no push path to keep in sync).
 */
export declare function renderPrometheus(snapshot: MetricsSnapshot): string;
/** Renders the snapshot as StatsD datagram lines (one metric per line). */
export declare function renderStatsD(snapshot: MetricsSnapshot): string[];
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