How to bypass captcha in OpenBullet

This article shows how to integrate a captcha solving API into OpenBullet, allowing automated bypass of reCAPTCHA and other challenges during request execution.

What You’ll Need

• 2Captcha account and API key
• OpenBullet (or OpenBullet 2)
• A config that targets a page with a CAPTCHA

General Workflow

1. Detect CAPTCHA and extract parameters like sitekey and websiteURL
2. Send a task to 2Captcha API
3. Poll until a token is ready
4. Use the solved token in your request block

This can be done in C# block, JS block, or external helper script.

Example: reCAPTCHA v2

Step 1: Create a Solve Task

Send a POST request to:

https://api.2captcha.com/createTask

Headers:

Content-Type: application/json

Body:

{
  "clientKey": "YOUR_API_KEY",
  "task": {
    "type": "RecaptchaV2TaskProxyless",
    "websiteKey": "6Lc_aXkUAAAAA...",
    "websiteURL": "https://target.com"
  }
}

Store taskId from the response.

Step 2: Poll for Result

Use a POST request to:

https://api.2captcha.com/getTaskResult

Body:

{
  "clientKey": "YOUR_API_KEY",
  "taskId": "TASK_ID"
}

Repeat every 5 seconds until you get:

{
  "status": "ready",
  "solution": {
    "gRecaptchaResponse": "TOKEN_HERE"
  }
}

Step 3: Insert into Request

In your config, modify the request to include the solved token:

g-recaptcha-response=TOKEN_HERE

Inject it in body, URL param, or header depending on the target.

Tips

• Use JS/C# block to perform the 2Captcha interaction
• Set appropriate timeouts — sometimes solving takes 20–30 seconds
• Debug token position in HTTP request using Burp or Fiddler

Supported CAPTCHA Types

Besides reCAPTCHA v2, 2Captcha also supports:

• reCAPTCHA v3 / Enterprise / Invisible
• Cloudflare Turnstile
• GeeTest v3/v4
• Arkose FunCaptcha
• hCaptcha
• Image, coordinate, rotate, grid captchas
• Audio captchas

Full reference: 2Captcha API Docs

Conclusion