docs(proposal): stealth patched-firefox backend via existing firefox browser_type#2001
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feder-cr wants to merge 1 commit into
Draft
docs(proposal): stealth patched-firefox backend via existing firefox browser_type#2001feder-cr wants to merge 1 commit into
feder-cr wants to merge 1 commit into
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draft / interest-check only, not a feature implementation yet. opening so the idea has somewhere concrete to land.
discussion: #2000
the recurring bot-detection wall here (cloudflare / turnstile / datadome) survives patchright + playwright-stealth because those patch chromium at the js layer, still detectable via native .toString() checks, the CDP attach signature, and chromium-shape risk weighting. a firefox build patched at the c++ source level has no js shim and no CDP signature, and presents a non-chrome engine some anti-bot stacks score more leniently.
the hook already exists: browser_manager.py already does
if browser_type == "firefox": self.browser = await self.playwright.firefox.launch(**browser_args). the only additions are letting BrowserConfig pass executable_path (point that launch at the patched binary) and firefox_user_prefs (the binary is fully pref-driven). patched firefox 150 lives at feder-cr/invisible_firefox (MPL-2), auto-downloads on first run. returned object is a normal playwright Browser, so extraction / markdown / screenshots / hooks are unchanged.this PR is just the proposal doc (docs/proposals/invisible-firefox-backend.md). honest caveats: helps the fingerprint/engine layer only, not IP reputation or a Press & Hold once it fires; firefox via playwright has no CDP so connect_over_cdp paths stay chromium-only. if in scope i'll wire the two config passthroughs + a docs example. if not, happy to close without noise.