From the source
You can now add "Sign in with X" to your application using the new X / Twitter (OAuth 2.0) provider in Supabase Auth.
What's new # The new provider uses X's OAuth 2.0 implementation, replacing the legacy OAuth 1.0a flow.
OAuth 2.0 offers a more modern authentication experience with better security practices, including PKCE support.
Getting started # Setting up X / Twitter authentication takes a few steps: Create an OAuth 2.0 app in the X Developer Portal Enable "Request email from users" in your app's authentication settings Add your callback URL from the Supabase dashboard Copy your Client ID and Client Secret from the "Keys and tokens" section Enter these credentials in Authentication > Providers > X / Twitter (OAuth 2.0) in the Supabase dashboard Once configured, you can use the Supabase client libraries to authenticate users via X / Twitter: For a complete guide on setting up X / Twitter authentication, see the full documentation .
Migration note # If you're currently using the legacy Twitter (OAuth 1.0a) provider, we recommend migrating to the new OAuth 2.0 provider.
The legacy provider will remain available while X / Twitter continues to support OAuth 1.0a.
…
