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better-auth/docs
Gustavo Valverde c0d5aaf107 feat(ciba): add backchannel authentication plugin
Add @better-auth/ciba implementing OpenID Connect Client-Initiated
Backchannel Authentication (CIBA) with poll and ping delivery modes.

Uses the oauth-provider extension protocol to register the
urn:openid:params:grant-type:ciba grant type and contribute
backchannel_authentication_endpoint to AS metadata.

Includes agent_claims forwarding, authorization_details propagation,
and OAuth Client Attestation header passthrough to sendNotification.
2026-03-20 21:06:34 +00:00
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