I was always that person who wanted to hide the read reciept of mine but still want to see if my message has been read by the other person.
So I started diving deep and found that we can actually manipulate client side signals from the obfuscated js to block read receipts.
If you want to know more:
https://github.com/Per0x1de-1337/web-whatsapp-manipulation
I run a few small scrapers on cron price trackers, a job feed, a stock watcher. Every couple of weeks one dies because a site renamed a CSS class. Patch, push, repeat. Maybe 30 min/month of pure boredom. So I spent a weekend on a fix.
Selfmend is a Playwright scraper where you describe each field in plain English (e.g. "the price in pounds, e.g. £51.77"). When a selector returns nothing, or returns something that fails the field validator, it sends the page's accessibility tree (not raw HTML) to an LLM, which proposes a new locator. A validator gate (type / regex / range) checks the result before it goes in the cache. So the LLM proposes; deterministic code accepts or rejects. That gate is the whole trick without it, the LLM silently corrupts your data over time.
You can checkout the project here: https://github.com/Per0x1de-1337/selfmend