/**
 * Jina URL to Markdown
 *
 * This tool integrates with Jina (https://jina.ai/), a web scraping
 * and crawling service designed to turn websites into LLM-ready data.
 *
 * Jina allows you to extract clean, well-formatted markdown or structured data
 * from websites, making it ideal for AI applications, particularly those using
 * Large Language Models (LLMs).
 *
 * Key features of Jina:
 * - Scrapes and crawls websites, even those with dynamic content
 * - Converts web content into clean, LLM-ready markdown
 * - Handles challenges like rate limits, JavaScript rendering, and anti-bot mechanisms
 * - Offers flexible pricing plans, including a free tier for small-scale use
 *
 * Usage:
 * const tool = new JinaUrlToMarkdown();
 * const result = await tool._call({ url: 'https://example.com' });
 * or
 * const tool = new JinaUrlToMarkdown({ apiKey: 'your-api-key', options: { 'targetSelector': ['body', '.class', '#id'], 'retainImages': 'none' } });
 * const result = await tool._call({ url: 'https://example.com' });
 *
 * For more information about Jina, visit: https://jina.ai/, https://r.jina.ai/docs
 */
import { StructuredTool } from '@langchain/core/tools';
import { z } from 'zod';
import ky from 'ky';
/**
 * Configuration options for the Jina URL to Markdown conversion
 * @interface JinaUrlToMarkdownOptions
 * @property {string[]} [targetSelector] - CSS selectors to target specific elements for extraction
 * @property {string} [retainImages] - Image handling strategy ('all', 'none', or specific selectors)
 * @example
 * {
 *   targetSelector: ['article', '.content', '#main'],
 *   retainImages: 'none'
 * }
 */
type JinaUrlToMarkdownOptions = {
    targetSelector?: string[];
    retainImages?: string;
};
/**
 * Input parameters for the Jina URL to Markdown tool
 * @interface JinaUrlToMarkdownInput
 * @property {string} url - The URL of the webpage to convert to markdown
 * @example
 * {
 *   url: "https://example.com/blog/post"
 * }
 */
type JinaUrlToMarkdownInput = {
    url: string;
};
/**
 * Constructor parameters for the JinaUrlToMarkdown tool
 * @interface JinaUrlToMarkdownFields
 * @property {string} [apiKey] - Jina API key for authentication
 * @property {JinaUrlToMarkdownOptions} [options] - Configuration options for the conversion
 */
interface JinaUrlToMarkdownFields {
    apiKey?: string;
    options?: JinaUrlToMarkdownOptions;
}
/**
 * Successful response containing markdown content
 * @typedef {string} JinaUrlToMarkdownResult
 * @example
 * "# Article Title\n\nThis is the content of the article..."
 */
type JinaUrlToMarkdownResult = string;
/**
 * Error message returned when the conversion fails
 * @typedef {string} JinaUrlToMarkdownError
 * @example
 * "API request failed: Client Error (404)"
 */
type JinaUrlToMarkdownError = string;
/**
 * Response type that can either be markdown content or an error message
 * @typedef {JinaUrlToMarkdownResult | JinaUrlToMarkdownError} JinaUrlToMarkdownResponse
 */
type JinaUrlToMarkdownResponse = JinaUrlToMarkdownResult | JinaUrlToMarkdownError;
export declare class JinaUrlToMarkdown extends StructuredTool {
    name: string;
    description: string;
    apiKey?: string;
    options: JinaUrlToMarkdownOptions;
    headers: Record<string, string>;
    schema: z.ZodObject<{
        url: z.ZodString;
    }, "strip", z.ZodTypeAny, {
        url: string;
    }, {
        url: string;
    }>;
    httpClient: typeof ky;
    constructor(fields?: JinaUrlToMarkdownFields);
    _call(input: JinaUrlToMarkdownInput): Promise<JinaUrlToMarkdownResponse>;
}
export {};