Automated bot for monitoring and booking clients for rare slots. Automated Bot for Monitoring and Booking Clients for Rare Slots
The company faced significant challenges in booking clients for online system slots. The main problems included:
- Rarity and fast disappearance of slots – available slots were infrequent and filled almost instantly.
- Strong anti-automation protection – the website used hidden Google reCAPTCHA, blocking automation tools like Selenium, SeleniumBase, Playwright, and Puppeteer, preventing form filling and access to the user account.
- Short user sessions – after logging in, users had limited time before the system automatically logged them out.
- Account blocking after multiple attempts – exceeding three unsuccessful login attempts resulted in account suspension.
- Lack of effective monitoring – the company could not track slot availability and register clients efficiently.
To automate the monitoring and booking process, a Python-based system was developed that:
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Successfully bypassed Google hidden reCAPTCHA, enabling automated login and session maintenance.
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Session maintenance and slot monitoring
The system periodically sent POST and GET requests with dynamic headers and time delays to prevent premature session termination. However, since frequent requests still triggered server blocking, a method was implemented to retrieve data every 2 seconds over an extended period without triggering restrictions.
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Due to account deletions over a short period, a fully automated system was developed to create new accounts, bypassing CAPTCHA, retrieving the activation code from an email inbox, and activating the account for immediate use.
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Bypassed CAPTCHA and automated client booking
When a free slot was detected:
- The system sent CAPTCHA challenges to a third-party API for resolution.
- Received a token and used it to bypass protection.
- Automatically booked the client.
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Automated client booking process.
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Sent real-time notifications via a Telegram bot, providing clients with slot availability and successful booking confirmations.
Programming Language: Python
Development Environment: PyCharm
Database: SQLite
Main Libraries and Tools:
- Parsing and Automation:
selenium,beautifulsoup4,requests,httpx - Telegram Integration:
aiogram,telethon - Asynchronous Operations:
asyncio,aiosqlite - CAPTCHA Solving: Third-party API services
- Web Data Processing:
lxml,cssselect - Proxy and Anti-blocking Measures:
PySocks,proxy-rotation - Logging and Debugging:
logging,pylint
At the first stage, the system successfully bypassed Google hidden reCAPTCHA through an internally developed method, without relying on third-party CAPTCHA-solving services or automation tools like Selenium. This innovative approach allowed automated login and session maintenance.
The system periodically sent POST and GET requests with dynamic headers and delays to prevent premature session termination.
Since accounts were blocked after a few days, an automated mechanism was developed to:
- Register a new account on the website.
- Retrieve the activation link from the email inbox.
- Confirm account activation.
The system checked for available slots every 2 seconds, using optimized parsing techniques to reduce server load and avoid detection.
If a free slot was found:
- The system sent the CAPTCHA to a third-party API.
- Retrieved a token and used it to bypass the challenge.
- Automatically booked the client.
Clients interacted with the system via a Telegram bot:
- Entering login credentials.
- Receiving notifications about available slots.
- Getting confirmation of successful booking.
The developed tool fully automated the monitoring and booking process for rare slots, significantly improving the company’s efficiency and eliminating manual work. The system successfully handled complex challenges such as CAPTCHA bypass, session maintenance, proxy rotation, and dynamic blocking prevention.