import { Tool } from '../core/types';
import { Logger } from '../utils/logger';
/**
 * A tool for web search functionality using Brave Search API
 */
export declare class BraveSearchTool implements Tool {
    name: string;
    description: string;
    logger: Logger;
    private apiKey;
    private endpoint;
    schema: {
        type: string;
        properties: {
            query: {
                type: string;
                description: string;
            };
            numResults: {
                type: string;
                description: string;
            };
            country: {
                type: string;
                description: string;
            };
        };
        required: string[];
    };
    /**
     * Creates a new Brave Search tool
     *
     * @param apiKey - Optional Brave Search API key (defaults to BRAVE_API_KEY env variable)
     */
    constructor(apiKey?: string);
    /**
     * Execute the web search using Brave Search API
     *
     * @param params - Parameters for the search
     * @returns Promise resolving to search results
     */
    execute(params: Record<string, any>): Promise<any>;
}