https://community.developer.cybersource.com/t5/cybersource-APIs/Is-JWT-now-fully-supported-for-the-Unified-Checkout-REST/m-p/95406#M4255 <P>Earlier this year, we developed a quick proof-of-concept application to get a feel for converting our legacy Cybersource implementation to the new REST-based Unified Checkout system.&nbsp; At the time of this initial effort, JWT authentication wasn't yet testable and ready to go on Cybersource's side -- so we built it out using the deprecated HTTP Signature approach.</P><P>As we're now looking to begin the production work, is anyone able to confirm whether this is now resolved?&nbsp; &nbsp;Does Cybersource now fully support the recommended REST/JWT approach in their test and production environments?&nbsp; If not, is there a formal timeline for this?</P><P>Appreciate any insight!</P> Mon, 15 Jun 2026 17:10:34 GMT timfoster 2026-06-15T17:10:34Z https://community.developer.cybersource.com/t5/cybersource-APIs/Is-JWT-now-fully-supported-for-the-Unified-Checkout-REST/m-p/95406#M4255 <P>Earlier this year, we developed a quick proof-of-concept application to get a feel for converting our legacy Cybersource implementation to the new REST-based Unified Checkout system.&nbsp; At the time of this initial effort, JWT authentication wasn't yet testable and ready to go on Cybersource's side -- so we built it out using the deprecated HTTP Signature approach.</P><P>As we're now looking to begin the production work, is anyone able to confirm whether this is now resolved?&nbsp; &nbsp;Does Cybersource now fully support the recommended REST/JWT approach in their test and production environments?&nbsp; If not, is there a formal timeline for this?</P><P>Appreciate any insight!</P> Mon, 15 Jun 2026 17:10:34 GMT https://community.developer.cybersource.com/t5/cybersource-APIs/Is-JWT-now-fully-supported-for-the-Unified-Checkout-REST/m-p/95406#M4255 timfoster 2026-06-15T17:10:34Z