Capium

Capium is Capzy's licensed stealth browser SDK: a patched Chromium that rewrites fingerprint surfaces at the source, driven by stock Playwright. This is a short overview. The full documentation lives at docs.capiumbrowser.com.

What it is

Capium ships a stealth Chromium binary that rewrites fingerprint surfaces (User-Agent and Client Hints, canvas, WebGL, audio, screen, fonts, WebRTC, and more) in Chromium's own source, so there is no injected JavaScript for detectors to catch. You drive it with the standard Playwright API you already know.

Install

Install the package, then let Playwright pull its system dependencies. The stealth binary itself auto-downloads on first launch.

pip install capium
python -m playwright install-deps

License

Get a license key from the Capzy dashboard and set it in the environment as CAPIUM_LICENSE_KEY (optionally CAPIUM_LICENSE_SERVER), or pass license_key= to launch. Licensing is session-tier, based on concurrent sessions, and billed on capzy.ai.

Minimal launch

seed picks a coherent, repeatable device persona, and humanize=True gives human-like input. That is enough for a working stealth session:

from capium import launch_context

browser, ctx, page = launch_context(
    seed=200123,
    headless=False,
    humanize=True,
    url="https://example.com",
)
print(page.title())
browser.close()