LibLab, which bills itself as an "SDK-as-a-service" platform for engineers, today announced that it raised $42 million in Series A funding from Insight Partners with participation from Zeev Ventures, Stepstone, Sheva, and Rainfall. Co-founder and CEO Sagiv Ofek said that the new capital will be put toward building out the company's core service while expanding LibLab's private beta. Companies release software developer kits, or SDKs, to enable developers to use their API-based services. But creating an SDK can be arduous work. Each language and operating system has sets of requirements, and there's the potential that security vulnerabilities and bugs crop up in the course of development.