I built an open source library that made our API easy to use. It ended up being a deciding factor between us and competitors for some customers. The library it

I built an open source library that made our API easy to use. It ended up being a deciding factor between us and competitors for some customers. The library itself was built with a lower-level part that covered every single feature, and a higher-level part that covered the most common use-cases, including enough to build a nice demo app with it.