export declare class RubberDuckServer {
    private server;
    private configManager;
    private pricingService;
    private usageService;
    private guardrailsService?;
    private providerManager;
    private enhancedProviderManager?;
    private conversationManager;
    private healthMonitor;
    private mcpClientManager?;
    private approvalService?;
    private functionBridge?;
    private mcpEnabled;
    private taskManager;
    constructor();
    private initializeMCPBridge;
    private toolResult;
    private toolErrorResult;
    /**
     * Build a Zod enum from configured provider names.
     * Falls back to z.string() when no providers are configured (z.enum([]) would throw).
     */
    private providerEnum;
    private registerTools;
    private registerPrompts;
    private registerUIResources;
    private handleAskDuckWithMCP;
    private handleCompareDucksWithMCP;
    private handleDuckCouncilWithMCP;
    private formatEnhancedDuckResponse;
    start(): Promise<void>;
    stop(): Promise<void>;
}
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