Auth0's Passkey APIs let you build passkey sign-in directly into your own UI instead of redirecting to Universal Login. Wrote up how the two fit together, hand-rolled vs pre-built self-service passkey management, and one Allowed Origins (CORS) setting worth checking before you go chasing a WebAuthn bug that isn't there. https://tobytes.com/articles/building-embedded-passkey-login-with-auth0 #auth0 #passkeys #identity