Solve reCAPTCHA Invisible with Node.js and CaptchaAI

Invisible reCAPTCHA v2 operates without user interaction — no checkbox, no image challenge (unless suspicious behavior is detected). It executes programmatically on form submit or button click. When submitting to CaptchaAI, you must include the invisible=1 parameter.

Prerequisites

Item	Value
CaptchaAI API key	From captchaai.com
Node.js	14+
Libraries	`axios`, `puppeteer`

Step 1: Detect the site key

const puppeteer = require('puppeteer');
const axios = require('axios');

const browser = await puppeteer.launch();
const page = await browser.newPage();
await page.goto('https://example.com/login');

// Extract site key and check if invisible
const siteKey = await page.$eval('[data-sitekey]', (el) => el.getAttribute('data-sitekey'));
const isInvisible = await page.$eval('[data-sitekey]', (el) => el.getAttribute('data-size') === 'invisible');
console.log(`Site key: ${siteKey}, Invisible: ${isInvisible}`);

Step 2: Submit to CaptchaAI

const API_KEY = 'YOUR_API_KEY';
const sleep = (ms) => new Promise((r) => setTimeout(r, ms));

const { data: submitData } = await axios.get('https://ocr.captchaai.com/in.php', {
  params: {
    key: API_KEY,
    method: 'userrecaptcha',
    googlekey: siteKey,
    pageurl: page.url(),
    invisible: 1,
    json: 1,
  },
});

if (submitData.status !== 1) throw new Error(submitData.request);
const taskId = submitData.request;
console.log(`Task submitted: ${taskId}`);

Step 3: Poll for the token

await sleep(15000);

let token;
for (let i = 0; i < 30; i++) {
  const { data: pollData } = await axios.get('https://ocr.captchaai.com/res.php', {
    params: { key: API_KEY, action: 'get', id: taskId, json: 1 },
  });

  if (pollData.status === 1) {
    token = pollData.request;
    console.log(`Token: ${token.slice(0, 50)}...`);
    break;
  }
  if (pollData.request !== 'CAPCHA_NOT_READY') {
    throw new Error(pollData.request);
  }
  await sleep(5000);
}

Step 4: Inject and submit

// Inject the token
await page.evaluate((t) => {
  document.getElementById('g-recaptcha-response').innerHTML = t;
}, token);

// Check for callback and execute if present
const hasCallback = await page.evaluate(() => {
  const el = document.querySelector('[data-callback]');
  return el ? el.getAttribute('data-callback') : null;
});

if (hasCallback) {
  await page.evaluate((cb, t) => window[cb](t), hasCallback, token);
}

// Submit the form
await page.click('form [type="submit"]');
console.log('Form submitted with solved invisible reCAPTCHA');
await browser.close();

Complete working example

const puppeteer = require('puppeteer');
const axios = require('axios');

const API_KEY = 'YOUR_API_KEY';
const sleep = (ms) => new Promise((r) => setTimeout(r, ms));

async function solveInvisibleRecaptcha() {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.goto('https://example.com/login');

  // 1. Get site key
  const siteKey = await page.$eval('[data-sitekey]', (el) => el.getAttribute('data-sitekey'));

  // 2. Submit to CaptchaAI
  const { data: submit } = await axios.get('https://ocr.captchaai.com/in.php', {
    params: {
      key: API_KEY, method: 'userrecaptcha', googlekey: siteKey,
      pageurl: page.url(), invisible: 1, json: 1,
    },
  });
  const taskId = submit.request;

  // 3. Poll for token
  await sleep(15000);
  let token;
  for (let i = 0; i < 30; i++) {
    const { data: poll } = await axios.get('https://ocr.captchaai.com/res.php', {
      params: { key: API_KEY, action: 'get', id: taskId, json: 1 },
    });
    if (poll.status === 1) { token = poll.request; break; }
    if (poll.request !== 'CAPCHA_NOT_READY') throw new Error(poll.request);
    await sleep(5000);
  }

  // 4. Inject and submit
  await page.evaluate((t) => {
    document.getElementById('g-recaptcha-response').innerHTML = t;
  }, token);
  await page.click('form [type="submit"]');
  console.log('Solved invisible reCAPTCHA');
  await browser.close();
}

solveInvisibleRecaptcha().catch(console.error);