Hamza Badar developed a cURL generation utility for HTTP requests within the square/okhttp repository, focusing on enhancing debugging and request reproducibility for developers. He implemented the toCurl() method on the Request class using Java and Kotlin, enabling engineers to generate accurate cURL commands from HTTP requests, including those with complex bodies and binary payloads. Hamza ensured reliability by writing comprehensive unit tests that covered both typical and edge-case scenarios. His work improved the efficiency of issue diagnosis and support workflows, contributing maintainable code and clear documentation that strengthened OkHttp’s developer tooling around API development, network programming, and testing.