During January 2026, work focused on enhancing authentication and subscription management for organization accounts in the sst/opencode repository. The developer implemented support for the ChatGPT-Account-Id header, enabling extraction of account IDs from JWT tokens to facilitate accurate entitlement checks and improve subscription visibility. This feature addressed requirements for organization subscriptions, directly impacting billing and reporting accuracy. The technical approach involved integrating API endpoints using TypeScript and full stack development practices, with comprehensive tests added to validate token parsing and account ID extraction. The work demonstrated attention to robust authentication flows and thorough testing, contributing to more reliable subscription management.