An abrupt outage hit Claude.ai across all platforms, forcing developers to scramble. Users on Hacker News reported a 403 permission error and an inability to access the service, citing account‑token mismatches. The disruption cut off chat, code, and demo sessions for many.

The failure appears linked to Claude’s subscription system. One commenter noted the Max20 plan cancellation might have triggered the lockout, while another mentioned the payment API remained online. The outage stalled code‑review workflows and demo prep for teams relying on Claude.

With the status page still showing “Major outage,” developers have reverted to manual coding and alternative tools. The incident underscores the fragility of AI‑as‑a‑service models when payment and authentication collide. Claude’s reliability now hangs on the stability of its subscription backend.