export interface WebTool {
    name: string;
    description: string;
    inputSchema: {
        type: string;
        properties: Record<string, any>;
        required: string[];
    };
}
export interface WebToolResult {
    success: boolean;
    output?: string;
    error?: string;
}
export declare class WebTools {
    private static instance;
    private constructor();
    static getInstance(): WebTools;
    /**
     * Get available web tools
     */
    getTools(): WebTool[];
    /**
     * Execute a web tool
     */
    executeTool(toolName: string, args: any): Promise<WebToolResult>;
    /**
     * Search the web using DuckDuckGo
     */
    private toolSearch;
    /**
     * Fetch content from a URL
     */
    private toolFetch;
    /**
     * Scrape structured data from a webpage
     */
    private toolScrape;
    /**
     * Format tools for AI system prompt
     */
    formatToolsForPrompt(): string;
    /**
     * Convert tools to OpenAI tools array format
     * Used when sending tools parameter in chat completion requests
     */
    toOpenAITools(): any[];
    /**
     * Parse tool call from AI response
     * Supports multiple formats:
     * 1. JSON: {"tool": "web_search", "args": {...}}
     * 2. Function tags: <function=web_search={...}</function>
     */
    parseToolCall(response: string): {
        tool: string;
        args: any;
    } | null;
}
/**
 * Usage Example:
 *
 * const webTools = WebTools.getInstance();
 *
 * // Search the web
 * const searchResult = await webTools.executeTool('web_search', {
 *     query: 'latest TypeScript features',
 *     max_results: 5
 * });
 *
 * // Fetch webpage content
 * const fetchResult = await webTools.executeTool('web_fetch', {
 *     url: 'https://example.com',
 *     selector: 'article'
 * });
 *
 * // Scrape structured data
 * const scrapeResult = await webTools.executeTool('web_scrape', {
 *     url: 'https://example.com/products',
 *     selectors: {
 *         title: 'h1',
 *         prices: '.price',
 *         descriptions: '.description'
 *     }
 * });
 */
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