Reliable Exam-Slot Booking Automation

Prometric exam-slot booking bot

Context

Auto-grabs scarce Prometric exam slots. One headed Chrome per user on a Windows VPS (Playwright/patchright).
Detects slots two ways: Continuous (poll API via proxies) or Watch (fire on a Telegram slot alert). Then drives the browser: eligibility → date+CAPTCHA → Search → click date → click time → pay.
Main problem — the grab self-throttles into a 403

In Watch mode, the bot reacts to Telegram alerts within seconds but consistently fails to load any availability — every search comes back "No Availability," so it never reaches a bookable slot.
Even when Telegram reports a real slot, the browser Search gets 403'd by Akamai.
Cause: each alert triggers 6 rapid Search clicks → the browser's own IP gets flagged. The 403s line up exactly with the moments it tries to grab.
A 403 renders "No Availability" even if a slot exists → the bot is blind, and can't even confirm whether the slot was still there.

i want a stable system that can automate the booking flow