DuckDuckGo Search MCP

import axios from 'axios'; import { randomUUID } from 'crypto'; import { getRandomUserAgent } from './user_agents.js'; class MonicaClient { constructor(timeout = 60000) { this.apiEndpoint = "https://monica.so/api/search_v1/search"; this.timeout = timeout; this.clientId = randomUUID(); this.sessionId = ""; this.headers = { "accept": "*/*", "accept-encoding": "gzip, deflate, br, zstd", "accept-language": "en-US,en;q=0.9", "content-type": "application/json", "dnt": "1", "origin": "https://monica.so", "referer": "https://monica.so/answers", "sec-ch-ua": '"Microsoft Edge";v="135", "Not-A.Brand";v="8", "Chromium";v="135"', "sec-ch-ua-mobile": "?0", "sec-ch-ua-platform": '"Windows"', "sec-fetch-dest": "empty", "sec-fetch-mode": "cors", "sec-fetch-site": "same-origin", "sec-gpc": "1", "user-agent": getRandomUserAgent(), "x-client-id": this.clientId, "x-client-locale": "en", "x-client-type": "web", "x-client-version": "5.4.3", "x-from-channel": "NA", "x-product-name": "Monica-Search", "x-time-zone": "Asia/Calcutta;-330" }; // Axios instance this.client = axios.create({ headers: this.headers, timeout: this.timeout, withCredentials: true }); } formatResponse(text) { // Clean up markdown formatting let cleanedText = text.replace(/\*\*/g, ''); // Remove any empty lines cleanedText = cleanedText.replace(/\n\s*\n/g, '\n\n'); // Remove any trailing whitespace return cleanedText.trim(); } async search(prompt) { const taskId = randomUUID(); const payload = { "pro": false, "query": prompt, "round": 1, "session_id": this.sessionId, "language": "auto", "task_id": taskId }; const cookies = { "monica_home_theme": "auto" }; // Convert cookies object to string const cookieString = Object.entries(cookies).map(([k, v]) => `${k}=${v}`).join('; '); try { const response = await this.client.post(this.apiEndpoint, payload, { headers: { ...this.headers, 'Cookie': cookieString }, responseType: 'stream' }); let fullText = ''; return new Promise((resolve, reject) => { response.data.on('data', (chunk) => { const lines = chunk.toString().split('\n'); for (const line of lines) { if (line.startsWith('data: ')) { try { const jsonStr = line.substring(6); const data = JSON.parse(jsonStr); if (data.session_id) { this.sessionId = data.session_id; } if (data.text) { fullText += data.text; } } catch (e) { // Ignore parse errors } } } }); response.data.on('end', () => { resolve(this.formatResponse(fullText)); }); response.data.on('error', (err) => { reject(err); }); }); } catch (error) { throw new Error(`Monica API request failed: ${error.message}`); } } } /** * Search using Monica AI * @param {string} query - The search query * @returns {Promise<string>} The search results */ export async function searchMonica(query) { const client = new MonicaClient(); return await client.search(query); }