/**
 * Collector for MCP-AQL operation metrics.
 *
 * Reads from OperationMetricsTracker and emits counter, histogram,
 * and gauge metric entries for the MetricsManager pipeline.
 */
import type { IMetricCollector, MetricEntry } from '../types.js';
import { OperationMetricsTracker } from '../OperationMetricsTracker.js';
export declare class OperationMetricsCollector implements IMetricCollector {
    private readonly tracker;
    readonly name = "operation-metrics";
    readonly description = "MCP-AQL operation counts, durations, and endpoint breakdown.";
    constructor(tracker: OperationMetricsTracker);
    collect(): MetricEntry[];
}
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