Access to all APIv2 login endpoints for third-party and user-created applications has been officially disabled. This is the final step in phasing out APIv2 — a legacy system that had already reached its end-of-life.
This wasn’t sudden. It follows a series of updates, reminders, and the removal of APIv2 documentation from our developer portal. With this, the deprecation is now complete.
To continue using the FREE FYERS API, switch to APIv3.
You can find more details in the APIv3 documentation.