How to Get and Set Cookies in Vibium

To get and set cookies in Vibium, call vibe.cookies() to read the current cookies and vibe.set_cookies([...]) to write them. Cookies live at the context level — each browser context has its own isolated cookie jar — and Vibium reads and writes them through the WebDriver BiDi storage.getCookies and storage.setCookie commands, so you work with the live browser state rather than parsing document.cookie. cookies() returns a list of dictionaries, each with fields like name, value, domain, path, secure, and httpOnly. set_cookies() takes a list of those dictionaries and installs them, which lets you pre-seed an authentication cookie and skip the login screen entirely. clear_cookies() wipes the jar to start from a clean, logged-out state. This makes cookies the fastest way to reuse a session across runs or to set up test fixtures.

How do I read the current cookies?

Call vibe.cookies() after navigating, and Vibium returns a list of cookie dictionaries reflecting the live browser state. Each entry includes the standard cookie attributes.

from vibium import browser_sync as browser
 
vibe = browser.launch()
vibe.go("https://example.com")
 
cookies = vibe.cookies()
for c in cookies:
    print(c["name"], "=", c["value"])
 
# Each cookie is a dict: name, value, domain, path, secure, httpOnly, ...
print(cookies[0])
 
vibe.quit()

Because Vibium reads cookies through BiDi's storage.getCookies rather than document.cookie, you also see httpOnly cookies that JavaScript can't access — exactly the ones that usually carry the session token. That makes cookies() reliable for inspecting auth state during a test.

How do I set a cookie before loading a page?

Pass a list of cookie dictionaries to vibe.set_cookies(). Each cookie needs at least name, value, and domain; add path, secure, or httpOnly as needed.

from vibium import browser_sync as browser
 
vibe = browser.launch()
vibe.go("https://example.com")  # establish the domain first
 
# Pre-seed a session cookie, then reload to apply it.
vibe.set_cookies([
    {
        "name": "session",
        "value": "abc123token",
        "domain": "example.com",
        "path": "/",
    }
])
 
vibe.reload()
# The page now loads as if you were already logged in.
 
vibe.quit()

Pre-seeding a cookie is the classic way to bypass a slow login flow: grab a valid session value once, then inject it on every run so your script lands straight on the authenticated page. Navigate to the domain first so the cookie's domain matches, then reload() (or go() again) so the request carries the cookie.

How do I clear cookies for a clean start?

Call vibe.clear_cookies() to delete the cookies in the current context, resetting session and tracking state. This is ideal for guaranteeing a test starts logged out.

from vibium import browser_sync as browser
 
vibe = browser.launch()
vibe.go("https://example.com")
 
vibe.clear_cookies()
vibe.reload()
# The page now behaves as a brand-new, logged-out visitor.
 
vibe.quit()

Clearing cookies is a quick reset, but for strong test isolation prefer a separate browser context: each context Vibium creates has its own cookie jar and storage, so parallel tests never leak state into one another. Reach for clear_cookies() for a quick within-context reset and contexts for true isolation.

How do I reuse a saved session across runs?

Read the cookies at the end of one run, save them to disk, and load them back at the start of the next — turning a one-time login into a reusable fixture.

import json
from vibium import browser_sync as browser
 
# Run 1: log in, then save cookies.
vibe = browser.launch()
vibe.go("https://example.com")
# ... perform login here ...
with open("session.json", "w") as f:
    json.dump(vibe.cookies(), f)
vibe.quit()
 
# Run 2: restore cookies and skip the login UI.
vibe = browser.launch()
vibe.go("https://example.com")
with open("session.json") as f:
    vibe.set_cookies(json.load(f))
vibe.reload()
vibe.quit()

This pattern pairs perfectly with the automate a login flow guide: log in once with the UI, persist the cookies, and every later run restores the session in a single set_cookies() call.

Next steps

• How to Automate a Login Flow with Vibium
• How to Execute JavaScript in Vibium
• What is Vibium?