Jon worked on the SchematicHQ/schematic-js repository, focusing on maintaining API stability by reverting a recent OpenAPI change. He removed the CreditGrantDetail model from the FeatureUsageResponseData, restoring the previous response contract and ensuring backward compatibility for existing API consumers. Using TypeScript and leveraging his skills in API client generation and code reversion, Jon executed a targeted rollback that minimized risk and surface area. This work addressed a potential breaking change, preserving stable feature usage payloads for integrations. Over the course of the month, Jon’s contributions demonstrated careful change-control discipline and a strong understanding of maintaining reliable API interfaces.