How to solve reCAPTCHA v3 Enterprise with CaptchaAI

reCAPTCHA v3 Enterprise is Google’s advanced, score-based bot detection system that evaluates user interactions in the background using adaptive risk analysis and behavioral signals — without interrupting the user with visible challenges. CaptchaAI simplifies the reCAPTCHA v3 Enterprise solving process by handling token generation and risk-score validation seamlessly.

Step 1: Identify & Classify the reCAPTCHA

1. Open browser DevTools (Network tab) and reload the page
2. Locate the reCAPTCHA v3 anchor request:
   https://www.google.com/recaptcha/enterprise/anchor?...

• enterprise/ indicates that this is a reCAPTCHA v3 Enterprise.

3. Extract googlekey:

• From anchor URL: k=6LdxxXXxAAAAAAcXxx...
• OR from HTML: data-sitekey="6LdxxXXxAAAAAAcXxx..."

Step 2: Submit to CaptchaAI API (in.php)

Complete request example

curl https://ocr.captchaai.com/in.php \
  -F "key=YOUR_API_KEY" \
  -F "method=userrecaptcha" \
  -F "version=v3" \
  -F "googlekey=6LdxxXXxAAAAAAcXxxXxxX91xxxxxxxx8xxOx7A" \
  -F "pageurl=https://example.com/login" \
  -F "proxy=login:password@residential-proxy.com:8080" \
  -F "proxytype=HTTP" \
  -F "enterprise=1" \
  -F "json=1"

Recommended Parameters:

• json=1: Recommended for structured response & User Agent retrieval.

Success Response

OK|1234567890

Success Response (JSON)

{"status":1,"request":"1234567890"}

Step 3: Retrieve Solution (res.php)

Wait 15-20 seconds, then every 5 second poll:

Complete request example

curl https://ocr.captchaai.com/res.php \   
-F "key=YOUR_API_KEY" \   
-F "action=get" \   
-F "id=1234567890" \   
-F "json=1"

Success Response

OK|0cAFcWeA7RO4a8OGOwOQ9...Ew9fQvkJ46JRE8w

Success Response (JSON)

{
    "status": 1,
    "result": "0cAFcWeA7RO4a8OGOwOQ9...Ew9fQvkJ46JRE8w",
    "user_agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) 144.0.7559.96 Safari/537.36"
}

⚠️ Note: Always use json=1 with reCAPTCHA v3 Enterprise to get the UserAgent used at solving process

Step 4: Inject Solution

Note: The actual captcha implementation on each website may vary. Examples below shows a very common case.

HTTP Clients (Python Example):

import requests

# Values obtained from CaptchaAI AFTER solving
CAPTCHA_TOKEN = "0cAFcWeA7RO4a8OGOwOQ9...Ew9fQvkJ46JRE8w"  # From CaptchaAI res.php response
USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) 144.0.7559.96 Safari/537.36"  # MUST be exact value from API response

# Configure session with critical headers and proxy
session = requests.Session()
session.headers.update({
    "User-Agent": USER_AGENT,
    "Referer": "https://example.com/login",
    "Origin": "https://example.com"
})

# Submit form WITH reCAPTCHA token
response = session.post(
    url="https://example.com/login",
    data={
        "email": "user@example.com",
        "password": "secure_password",
        "g-recaptcha-response-100000": CAPTCHA_TOKEN  # Injected token
    },
    timeout=30,
    allow_redirects=True
)

Step 5: Verify Success

✔️ Page loaded / Form Submitted → Success!
❌ Access denied → Re-solve (cookie may be expired or proxy/UA mismatched)

HTTP Clients (Python Example):

# Verify success (adjust checks per target site)
if response.status_code == 200 and "dashboard" in response.url:
    print("Login successful! Session established.")
else:
    print(f"Submission returned status {response.status_code}")
    print(f"Response preview: {response.text[:200]}")

That's it, we’ve successfully passed reCAPTCHA v3 Enterprise, handled verification, and confirmed a valid session, completing the full automation cycle, with CaptchaAI doing all the heavy lifting behind the scenes.

Tips

• Always use json=1 to receive User Agent value.
• Proxy consistency is non-negotiable.
• Using the returned User Agent value is highly recommend.