TL;DR: My web-agent runs sannysoft.com anti-bot tests. vanilla playwright passes 19/32, with playwright-stealth it's 21/32, but patchright (claimed stronger) — still 19/32, identical to vanilla. The reason: patchright's patches all sit in the launch phase, but I take over already-launched Chrome via connect_over_cdp — entirely bypassed.
8 chapters + 3 mermaid figures (xychart bar comparison + 2 decision flowcharts).
Full version (with reproducible spike commands):
https://github.com/franciseliang99-dot/web-agent/blob/main/docs/blog-drafts/2026-05-patchright-nogo-final-en.md
Project repo (MIT, ⭐ welcome):
https://github.com/franciseliang99-dot/web-agent
Anti-detection layered model: JS injection / CDP / TLS / IP reputation. Architecture decisions decide which layers are off the menu.
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