/**
 * Tool Chain Tracker - Tracks tool call chains and execution flow
 *
 * Based on Agent Harness theory: "Every production-grade Agent converges
 * on this core loop: while(model returns tool calls): execute tool →
 * capture result → append to context"
 */
export interface ToolCallNode {
    id: string;
    toolName: string;
    params: Record<string, unknown>;
    result?: unknown;
    error?: string;
    durationMs: number;
    timestamp: number;
    children: ToolCallNode[];
    metadata?: Record<string, unknown>;
}
export interface ToolChain {
    sessionKey: string;
    startTime: number;
    endTime?: number;
    nodes: ToolCallNode[];
    totalCalls: number;
    successfulCalls: number;
    failedCalls: number;
    totalDurationMs: number;
}
export interface ToolChainTrackerConfig {
    enabled: boolean;
    maxChainsPerSession: number;
    maxNodesPerChain: number;
    trackParams: boolean;
    trackResults: boolean;
    autoPrune: boolean;
}
export declare class ToolChainTracker {
    private chains;
    private currentChainId;
    private config;
    constructor(config?: Partial<ToolChainTrackerConfig>);
    /**
     * Start a new tool chain for a session
     */
    startChain(sessionKey: string): string;
    /**
     * Record a tool call in the chain
     */
    recordCall(sessionKey: string, toolName: string, params: Record<string, unknown>, durationMs?: number): string;
    /**
     * Record tool call result
     */
    recordResult(sessionKey: string, nodeId: string, result?: unknown, error?: string, durationMs?: number): void;
    /**
     * End the current chain for a session
     */
    endChain(sessionKey: string): void;
    /**
     * Get chain summary as text
     */
    getChainSummary(sessionKey: string): string;
    /**
     * Get chain visualization (ASCII tree)
     */
    getChainVisualization(sessionKey: string): string;
    /**
     * Get all chains for a session
     */
    getSessionChains(sessionKey: string): ToolChain[];
    /**
     * Get current active chain
     */
    getCurrentChain(sessionKey: string): ToolChain | undefined;
    /**
     * Get chain statistics
     */
    getStats(): {
        totalChains: number;
        activeChains: number;
        totalToolCalls: number;
        avgSuccessRate: number;
    };
    /**
     * Export chains as JSON
     */
    exportChains(sessionKey?: string): string;
    /**
     * Reset all chains
     */
    reset(): void;
    /**
     * Get config
     */
    getConfig(): ToolChainTrackerConfig;
    /**
     * Update config
     */
    setConfig(config: Partial<ToolChainTrackerConfig>): void;
    private generateChainId;
    private generateNodeId;
    private calculateSuccessRate;
    private pruneChain;
    private pruneOldChains;
}