chatday

A developer known as rynaqrtz created an open-source Node.js library called chatday that provides programmatic access to the Chatday.ai API. The library handles anonymous authentication, model listing, and streaming chat completions with randomized user agents and languages. It supports multiple models including 'openai/gpt-5.5' and returns responses in a structured format.

| import crypto from 'node:crypto'; | | | const BASE = 'https://www.chatday.ai'; | | | const UAS = | | | 'Mozilla/5.0 Linux; Android 10; K AppleWebKit/537.36 KHTML, like Gecko Chrome/137.0.0.0 Mobile Safari/537.36', | | | 'Mozilla/5.0 Linux; Android 14; Pixel 8 Pro AppleWebKit/537.36 KHTML, like Gecko Chrome/149.0.0.0 Mobile Safari/537.36', | | | 'Mozilla/5.0 iPhone; CPU iPhone OS 18 2 like Mac OS X AppleWebKit/605.1.15 KHTML, like Gecko Version/18.2 Mobile/15E148 Safari/604.1', | | | 'Mozilla/5.0 Windows NT 10.0; Win64; x64 AppleWebKit/537.36 KHTML, like Gecko Chrome/149.0.0.0 Safari/537.36', | | | 'Mozilla/5.0 Macintosh; Intel Mac OS X 14 7 1 AppleWebKit/605.1.15 KHTML, like Gecko Version/18.2 Safari/605.1.15', | | | 'Mozilla/5.0 X11; Linux x86 64 AppleWebKit/537.36 KHTML, like Gecko Chrome/148.0.0.0 Safari/537.36' | | | ; | | | const LANGS = 'id','en','es','fr','de','ja','ko','pt','vi','th','it','nl' ; | | | const pick = a = a Math.floor Math.random a.length ; | | | const sleep = ms = new Promise r = setTimeout r, ms ; | | | async function signIn { | | | await sleep 300 + Math.random 800 ; | | | const r = await fetch ${BASE}/api/auth/sign-in/anonymous , { | | | method: 'POST', | | | headers: { | | | 'User-Agent': pick UAS , | | | Origin: BASE, | | | Referer: ${BASE}/chat , | | | 'Content-Type': 'application/json', | | | 'Accept-Language': pick LANGS | | | }, | | | body: '{}' | | | } ; | | | if r.ok throw new Error 'Auth gagal: ' + r.status ; | | | const setCookie = r.headers.getSetCookie?. ?? r.headers.get 'set-cookie' .filter Boolean ; | | | return { cookie: setCookie.map c = c.split ';' 0 .join '; ' , ... await r.json }; | | | } | | | async function listModels { | | | const { cookie } = await signIn ; | | | const r = await fetch ${BASE}/api/v2/models , { | | | headers: { | | | 'User-Agent': pick UAS , | | | Origin: BASE, | | | Referer: ${BASE}/chat , | | | Cookie: cookie, | | | 'Accept': 'application/json', | | | 'Accept-Language': pick LANGS | | | } | | | } ; | | | if r.ok return { creator: 'rynaqrtz', error: Gagal mengambil models: ${r.status} }; | | | const data = await r.json ; | | | const models = data.models || data || .map m = { | | | id: m.id || m, | | | name: m.name || m.id || m, | | | provider: m.provider || null, | | | tier: m.tier || null, | | | capabilities: m.capabilities || null | | | } ; | | | return { creator: 'rynaqrtz', status: 200, total: models.length, models }; | | | } | | | async function chat prompt, model = 'openai/gpt-5.5' { | | | const { cookie } = await signIn ; | | | const vid = crypto.randomUUID .replace /-/g, '' ; | | | const cid = Array 16 .fill 0 .map = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789' Math.floor Math.random 36 .join '' ; | | | const r = await fetch ${BASE}/api/v2/chat/anonymous , { | | | method: 'POST', | | | headers: { | | | 'User-Agent': pick UAS , | | | Origin: BASE, | | | Referer: ${BASE}/chat , | | | 'Content-Type': 'application/json', | | | Cookie: cookie, | | | Accept: 'text/event-stream', | | | 'Accept-Language': pick LANGS | | | }, | | | body: JSON.stringify { content: prompt, model, visitorId: vid, conversationId: cid } | | | } ; | | | if r.ok return { creator: 'rynaqrtz', status: r.status, error: await r.text .substring 0, 300 }; | | | const reader = r.body.getReader ; | | | const decoder = new TextDecoder ; | | | let buf = '', full = ''; | | | while true { | | | const { value, done } = await reader.read ; | | | if done break; | | | buf += decoder.decode value, { stream: true } ; | | | const lines = buf.split '\n' ; | | | buf = lines.pop ; | | | for const line of lines { | | | if line.startsWith 'data:' continue; | | | const payload = line.slice 5 .trim ; | | | if payload continue; | | | try { | | | const evt = JSON.parse payload ; | | | if evt.type === 'text-delta' && typeof evt.delta === 'string' full += evt.delta; | | | } catch {} | | | } | | | } | | | return { creator: 'rynaqrtz', status: 200, model, response: full.trim }; | | | } | | | async function testAllModels prompt { | | | const { models } = await listModels ; | | | if models return; | | | const results = ; | | | for const m of models { | | | const r = await chat prompt, m.id ; | | | results.push r ; | | | } | | | return results; | | | } | | | if process.argv 1 ?.includes 'chatday.js' { | | | const cmd = process.argv 2 ; | | | const arg1 = process.argv 3 ; | | | const arg2 = process.argv 4 ; | | | if cmd === 'models' { | | | const result = await listModels ; | | | console.log JSON.stringify result, null, 2 ; | | | } else if cmd === 'testall' { | | | const prompt = arg1 || 'Sebutkan modelmu dalam 3 kata'; | | | const results = await testAllModels prompt ; | | | console.log JSON.stringify { creator: 'rynaqrtz', total: results.length, results }, null, 2 ; | | | } else if cmd === 'chat' || cmd { | | | const prompt = arg1 || 'Halo, perkenalan singkat'; | | | const model = arg2 || 'openai/gpt-5.5'; | | | const result = await chat prompt, model ; | | | console.log JSON.stringify result, null, 2 ; | | | } else { | | | const result = await chat cmd, arg1 || 'openai/gpt-5.5' ; | | | console.log JSON.stringify result, null, 2 ; | | | } | | | } |