Is it groundbreaking? 1Password hasn't done this for some time now?
For that matter, 1Password offers site devs an ability to accept passkeys:
https://passage.1password.com/product/passkey-complete
This isn't last generation's 1Password "app", they've been on a tear last few years in turning into a "platform". Explore the dev docs for CLI tooling, integrations, more, and it all works for teams (including with SSO no less) not just individuals.