Why not? Anti-detect browser tampering detected, potentially a bot, access denied.

[tuyendung1]

def test_fingerprintjs(page):
"""demo.fingerprint.com/web-scraping — industry-standard bot detection."""
page.goto("https://demo.fingerprint.com/web-scraping", wait_until="domcontentloaded", timeout=30000)
time.sleep(8)

# Click search to trigger bot detection — bots get blocked, humans see flights
try:
    page.click("button:has-text('Search')", timeout=5000)
    time.sleep(5)
except Exception:
    pass

results = page.evaluate("""() => {
    const text = document.body.innerText;
    // Bots see error messages; humans see flight prices
    const hasFlights = text.includes('Price per adult') || text.includes('$');
    const isBlocked = text.includes('request was blocked') || text.includes('bot visit detected');
    return {passed: hasFlights && !isBlocked, isBlocked, hasFlights};
}""")
return results

Anti-detect browser tampering detected, potentially a bot, access denied.

[Cloak-HQ]

Thanks for the report. "Anti-detect browser tampering" maps to FPJS's tampering: true signal — their ML catching patch anomalies in rendering output.

Try this config first (consistently passes FPJS playground across #124, #193, #197):

import cloakbrowser
import time

browser = cloakbrowser.launch(
    headless=False,
    geoip=True,
    proxy="http://user:pass@residential-proxy:port",
    args=[
        "--fingerprint-noise=false",
        "--fingerprint-screen-width=1920",
        "--fingerprint-screen-height=1080",
    ],
)
page = browser.new_page()
page.goto("https://demo.fingerprint.com/web-scraping", wait_until="domcontentloaded", timeout=30000)
time.sleep(8)

Key points:

• --fingerprint-noise=false — noise is on by default and FPJS flags the variations as tampering
• headless=False — FPJS detects headless even with patches
• geoip=True + residential proxy — resolves timezone + locale from exit IP; datacenter IPs get flagged at IP reputation level before fingerprinting runs
• Use launch(), not launch_persistent_context() — FPJS still flags persistent context (demo.fingerprint.com/playground detects as bot (type: nodriver) #124)
• time.sleep() instead of page.wait_for_timeout() — wait_for_timeout sends CDP commands that anti-bot systems detect

If it still fails, share:

1. CloakBrowser version (pip show cloakbrowser) and binary version (ls ~/.cloakbrowser/) — tampering fixes landed across v0.3.26–0.3.30
2. OS / environment — native Linux / Docker / Windows / macOS (Docker triggers tampering more than native; macOS rarely does)

Related: #193, #197, #294. Let us know if this works for you.

[tuyendung1]

Regarding Cloakbrowser Manager, when running a profile it reports 512MB RAM. 4GB RAM should support 8 profiles. Why is it lagging with 3 profiles after running Cloakbrowser? Or is it because running it with Docker makes Choium run better? Or is Choium on Docker different from the Cloakbrowser Python version?

[tuyendung1]

Can multi-profile gologin be used, bro? What about launch_persistent_context_asynic(), or do I have to use launch()? And will it bypass anti-detect browsers? Vào 7:53, Th 7, 23 thg 5, 2026 Cloak-HQ ***@***.***> đã viết:

…

Thanks for the report. "Anti-detect browser tampering" maps to FPJS's tampering: true signal — their ML catching patch anomalies in rendering output. *Try this config first* (consistently passes FPJS playground across #124 <#124>, #193 <#193>, #197 <#197>): import cloakbrowserimport time browser = cloakbrowser.launch( headless=False, geoip=True, ***@***.***:port", args=[ "--fingerprint-noise=false", "--fingerprint-screen-width=1920", "--fingerprint-screen-height=1080", ], )page = browser.new_page()page.goto("https://demo.fingerprint.com/web-scraping", wait_until="domcontentloaded", timeout=30000)time.sleep(8) Key points: - --fingerprint-noise=false — noise is on by default and FPJS flags the variations as tampering - headless=False — FPJS detects headless even with patches - geoip=True + residential proxy — resolves timezone + locale from exit IP; datacenter IPs get flagged at IP reputation level before fingerprinting runs - Use launch(), not launch_persistent_context() — FPJS still flags persistent context (#124 <#124>) - time.sleep() instead of page.wait_for_timeout() — wait_for_timeout sends CDP commands that anti-bot systems detect If it still fails, share: 1. *CloakBrowser version* (pip show cloakbrowser) and *binary version* (ls ~/.cloakbrowser/) — tampering fixes landed across v0.3.26–0.3.30 2. *OS / environment* — native Linux / Docker / Windows / macOS (Docker triggers tampering more than native; macOS rarely does) Related: #193 <#193>, #197 <#197>, #294 <#294>. Let us know if this works for you. — Reply to this email directly, view it on GitHub <#299 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/A7CB2OGV2OCDW4XU4GFFLUL44DZBTAVCNFSM6AAAAACZJ5JURKVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTOMBSHAYDINY> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. You are receiving this because you authored the thread.Message ID: ***@***.***>