/**
 * Enhanced Tool Discovery Service
 *
 * Extends the base tool discovery service with additional features:
 * - Tool annotation support
 * - Multi-server coordination
 * - Advanced filtering and search
 * - Tool versioning and compatibility checking
 *
 * @module mcp/enhancedToolDiscovery
 * @since 8.39.0
 */
import { EventEmitter } from "events";
import type { Client } from "@modelcontextprotocol/sdk/client/index.js";
import type { MCPServerInfo, ToolDiscoveryResult, UnifiedTool, CompatibilityCheckResult, EnhancedToolInfo, ToolSearchCriteria, ToolSearchResult, MCPToolAnnotations } from "../types/index.js";
import { MultiServerManager } from "./multiServerManager.js";
/**
 * Enhanced Tool Discovery Service
 *
 * Provides advanced tool discovery features including annotation support,
 * multi-server coordination, and powerful search capabilities.
 *
 * @example
 * ```typescript
 * const discovery = new EnhancedToolDiscovery();
 *
 * // Discover tools with annotation inference
 * const result = await discovery.discoverToolsWithAnnotations(
 *   "github-server",
 *   client,
 * );
 *
 * // Search for tools
 * const searchResult = await discovery.searchTools({
 *   category: "file-system",
 *   annotations: { readOnlyHint: true },
 *   limit: 10,
 * });
 *
 * // Get tools by safety level
 * const safeTools = discovery.getToolsBySafetyLevel("safe");
 * ```
 */
export declare class EnhancedToolDiscovery extends EventEmitter {
    private toolRegistry;
    private serverToolsMap;
    private multiServerManager;
    private discoveryInProgress;
    constructor(multiServerManager?: MultiServerManager);
    /**
     * Discover tools with automatic annotation inference
     */
    discoverToolsWithAnnotations(serverId: string, client: Client, timeout?: number): Promise<ToolDiscoveryResult>;
    /**
     * Create enhanced tool info with annotations
     */
    private createEnhancedToolInfo;
    /**
     * Infer category from tool definition
     */
    private inferCategory;
    /**
     * Search tools with advanced criteria
     */
    searchTools(criteria: ToolSearchCriteria): ToolSearchResult;
    /**
     * Get tools by safety level
     */
    getToolsBySafetyLevel(level: "safe" | "moderate" | "dangerous"): EnhancedToolInfo[];
    /**
     * Get tools requiring confirmation
     */
    getToolsRequiringConfirmation(): EnhancedToolInfo[];
    /**
     * Get read-only tools
     */
    getReadOnlyTools(): EnhancedToolInfo[];
    /**
     * Get unified tools from all servers
     */
    getUnifiedTools(): UnifiedTool[];
    /**
     * Register a server with the multi-server manager
     */
    registerServer(server: MCPServerInfo): void;
    /**
     * Update tool annotations
     */
    updateToolAnnotations(serverId: string, toolName: string, annotations: Partial<MCPToolAnnotations>): boolean;
    /**
     * Check tool compatibility
     */
    checkCompatibility(toolName: string, serverId: string, targetVersion?: string): CompatibilityCheckResult;
    /**
     * Get tool by key
     */
    getTool(serverId: string, toolName: string): EnhancedToolInfo | undefined;
    /**
     * Get all tools
     */
    getAllTools(): EnhancedToolInfo[];
    /**
     * Get tools for a server
     */
    getServerTools(serverId: string): EnhancedToolInfo[];
    /**
     * Clear tools for a server
     */
    clearServerTools(serverId: string): void;
    /**
     * Create tool key
     */
    private createToolKey;
    /**
     * Get statistics
     */
    getStatistics(): {
        totalTools: number;
        toolsByServer: Record<string, number>;
        toolsByCategory: Record<string, number>;
        toolsBySafetyLevel: Record<string, number>;
        toolsWithAnnotations: number;
        deprecatedTools: number;
    };
}