This document discusses an introduction to API documentation. It provides an agenda that includes explaining what an API publisher is and introducing documentation. It discusses the importance of documentation for user onboarding. The learning objectives are to explain how documentation influences user onboarding, develop documentation checklists, generate documentation from OpenAPI specifications, build sample workflows, publish documentation, and share it. It demonstrates documentation and recaps the learning objectives. Additional resources on documentation best practices and the Postman community are provided.