First-Party Sets demo

📖 Note: Refer to the First-Party Sets documentation to understand how the API works.

Demo scenarios

👋 Make sure you follow and [PASS] the "Set-up and settings" steps below before trying the demos.

This demo uses two sites: and, which are both part of the same First-Party Set. sets a cookie named crossSite to that will be allowed in the cross-site, same-set contexts via the Storage Access API.

Set-up and settings