Worked on enhancing the OpenAPI Generator within the Effect-TS/effect-smol repository by adding robust support for application/x-www-form-urlencoded request bodies in the httpclient output format. This involved implementing parsing and generation logic to ensure form-based request bodies are correctly handled and not dropped, directly improving API client reliability for downstream integrations. The work was delivered with clear commit-level traceability and collaborative input from the team. Leveraged TypeScript for both API development and testing, focusing on code quality and maintainability. The contribution addressed a specific integration pain point, resulting in smoother handling of form-based endpoints for client applications.