import { BaseRetrievalTool, RetrievalToolOptions } from './BaseRetrievalTool';
import { ToolContext } from '../ToolContext';
/**
 * Options for creating a web search tool
 */
export interface WebSearchToolOptions extends RetrievalToolOptions {
    /**
     * API key for the search engine
     */
    apiKey?: string;
    /**
     * Search engine ID
     */
    searchEngineId?: string;
}
/**
 * Search result interface
 */
export interface SearchResult {
    /**
     * Title of the result
     */
    title: string;
    /**
     * URL of the result
     */
    url: string;
    /**
     * Snippet/description of the result
     */
    snippet: string;
}
/**
 * Web search tool for retrieving information from the web
 */
export declare class WebSearchTool extends BaseRetrievalTool {
    /**
     * API key for the search engine
     */
    private apiKey?;
    /**
     * Search engine ID
     */
    private searchEngineId?;
    /**
     * Create a new web search tool
     *
     * @param options Options for the web search tool
     */
    constructor(options?: Partial<WebSearchToolOptions>);
    /**
     * Retrieve information from the web
     *
     * @param query The query to search for
     * @param maxResults Maximum number of results to return
     * @param context The context for the retrieval
     * @returns The search results
     */
    protected retrieve(query: string, maxResults: number, context: ToolContext): Promise<SearchResult[]>;
}