Kevin expanded the developer documentation for the Dashboard API endpoints in the axiomhq/docs repository, focusing on create, update, delete, and retrieve operations. He used Markdown and JSON to ensure the documentation accurately reflected the current API surface, leveraging OpenAPI Specification and RESTful services best practices. The work, delivered through a co-authored, traceable commit, aimed to improve API discoverability and accelerate integration for new users. By aligning the documentation with the evolving API, Kevin reduced onboarding time and support requests, demonstrating a collaborative approach and attention to detail in technical writing and version control within a cross-functional team environment.