export declare class DiscoveryEngine {
    private ragEngine;
    private tools;
    private toolPatterns;
    private toolsByDescription;
    constructor();
    /**
     * Get the embedding model for external use (e.g., IntentExecutor param matching)
     */
    getEmbeddingModel(): any;
    initialize(currentConfig?: any): Promise<void>;
    findBestTool(description: string, confidenceThreshold?: number): Promise<{
        name: string;
        confidence: number;
        reason: string;
    } | null>;
    /**
     * Find multiple relevant tools using RAG discovery
     */
    findRelevantTools(description: string, limit?: number, confidenceThreshold?: number): Promise<Array<{
        name: string;
        confidence: number;
        reason: string;
    }>>;
    private findPatternMatch;
    private findSimilarityMatch;
    private calculateSimilarity;
    private findKeywordMatch;
    findRelatedTools(toolName: string): Promise<any[]>;
    /**
     * Index a tool using RAG embeddings
     */
    indexTool(tool: any): Promise<void>;
    /**
     * Index tools from an MCP using RAG
     */
    indexMCPTools(mcpName: string, tools: any[]): Promise<void>;
    /**
     * Fast indexing for optimized cache loading
     */
    indexMCPToolsFromCache(mcpName: string, tools: any[]): Promise<void>;
    /**
     * Get RAG engine statistics
     */
    getRagStats(): {
        isInitialized: boolean;
        totalEmbeddings: number;
        queuedTasks: number;
        isIndexing: boolean;
        isReindexing: boolean;
        cacheSize: string;
        disabledMCPs: string[];
        activeIndex: string;
    };
    /**
     * Clear RAG cache
     */
    clearRagCache(): Promise<void>;
    /**
     * Force refresh RAG cache
     */
    refreshRagCache(): Promise<void>;
    /**
     * Extract meaningful patterns from a tool description
     */
    private extractPatternsFromDescription;
    /**
     * Extract patterns from tool name
     */
    private extractPatternsFromName;
    /**
     * Check if description is a git operation that should be routed to Shell
     */
    private checkGitOperationOverride;
    /**
     * Check if description is a single file operation that should go to read_file
     */
    private checkSingleFileOperationOverride;
    /**
     * Get statistics about indexed tools
     */
    getStats(): any;
}
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