Worked on maintaining API stability for the SchematicHQ/schematic-js repository by reverting recent OpenAPI changes that had introduced the CreditGrantDetail model into the FeatureUsageResponseData. Using TypeScript and leveraging skills in API client generation and code reversion, restored the previous response contract to ensure backward compatibility for existing integrations. This targeted rollback addressed a potential breaking change for API consumers, preserving stable feature usage payloads and minimizing risk. The approach demonstrated careful change-control discipline, focusing on a minimal and precise update to the codebase. The work emphasized reliability and continuity for downstream users relying on the established API structure.