Insomnia Designer, a new addition to the Insomnia suite of open-source developer tools, offers a collaborative environment for editing REST and GraphQL APIs, facilitating a spec-first approach to software design. Acquired by Kong, Insomnia Designer is crafted to align with modern DevOps practices, enabling developers to manage APIs as first-class citizens in microservices architectures. This tool integrates seamlessly with Kubernetes and Kong, automating configuration processes to reduce risk and improve workflow efficiency. It features a Document Listing for easy API spec discovery and management, ensuring effective version control. Additionally, it allows users to embed Kong Gateway policies directly within API specifications using Insomnia Plugins, streamlining the development process by consolidating design, development, and QA workflows into a single source of truth.