Developing an API description, particularly for OpenAPI, can be challenging, especially when starting from scratch or adapting an existing API. The blog post discusses the author's experience with the Museum API project, emphasizing the role of Redocly's open-source tools in facilitating the development process. Redocly's VS Code extension and CLI tools significantly improved productivity by providing real-time validation, code completion, and the ability to preview API documentation as it would appear to end users. These tools helped streamline the process of building accurate example payloads and implementing custom linting rules, such as enforcing sentence casing for operation summaries. The post highlights how Redocly's tools enhance the developer experience by offering flexibility and unexpected value in OpenAPI projects, encouraging users to experiment and explore further resources like the Museum OpenAPI spec and Redocly's GitHub page.