/**
 * Tool Usage Analyzer - Tracks and analyzes tool usage patterns
 *
 * Based on Agent Harness theory: "Vercel deleted 80% of its Agent tools,
 * and the Agent went from task failure to task success"
 */
export interface ToolUsageStats {
    toolName: string;
    calls: number;
    successes: number;
    failures: number;
    avgDurationMs: number;
    lastUsedTimestamp: number;
    successRate: number;
}
export interface ToolUsageRecommendations {
    keep: string[];
    review: string[];
    remove: string[];
}
export interface ToolUsageAnalyzerConfig {
    enabled: boolean;
    lowUsageThreshold: number;
    veryLowUsageThreshold: number;
    minCallsForAnalysis: number;
    reportIntervalMs: number;
}
export declare class ToolUsageAnalyzer {
    private stats;
    private config;
    private totalCalls;
    private lastReportTime;
    constructor(config?: Partial<ToolUsageAnalyzerConfig>);
    /**
     * Record a tool usage event
     */
    recordUsage(toolName: string, success: boolean, durationMs: number): void;
    /**
     * Get usage stats for a specific tool
     */
    getToolStats(toolName: string): ToolUsageStats | undefined;
    /**
     * Get all tool usage stats
     */
    getAllStats(): Map<string, ToolUsageStats>;
    /**
     * Get tools with low usage (below threshold)
     */
    getLowUsageTools(threshold?: number): string[];
    /**
     * Get tools with low success rate
     */
    getLowSuccessTools(threshold?: number): string[];
    /**
     * Get recommendations for tool optimization
     */
    getRecommendations(): ToolUsageRecommendations;
    /**
     * Generate and log usage report
     */
    generateReport(): void;
    /**
     * Get top N most used tools
     */
    getTopTools(n: number): ToolUsageStats[];
    /**
     * Get usage summary as text
     */
    getSummaryText(): string;
    /**
     * Reset all stats
     */
    reset(): void;
    /**
     * Export stats as JSON
     */
    exportStats(): string;
    /**
     * Get config
     */
    getConfig(): ToolUsageAnalyzerConfig;
    /**
     * Update config
     */
    setConfig(config: Partial<ToolUsageAnalyzerConfig>): void;
}