Johannes Nicolai is a long-time open-source enthusiast and contributor. He is interested in all things API design, IssueOps, integrations, CI/CD, and generative AI - check out his GitHub profile (@jonico) to learn more about his projects. In his current role at Postman, he is helping customers in central Europe to adopt API-first best practices and developer workflows established from his time at GitHub and PlanetScale. Before GitHub, he led the local version control teams at CollabNet - the founders of Subversion and SourceForge - so branching and merging everywhere he goes.

The talk is 90 percent a live demo (what could possibly go wrong :-), where we first explore the Postman Public API network to find interesting AI API workspaces like OpenAI and Aleph Alpha (and then find Waldo with the help of AI). We will try out the examples in those workspaces, including Postman's ability to visualize API responses programatically (this is where the lego comes in), use credential helpers for popular APIs and introduce request chaining for more powerful automation ideas. We will close with a Harry Potter-API based example on how to generate non trivial API test cases using postbot - Postman's built-in AI based helper. All functionalities demoed are available in Postman's free plans, so no hidden sales pitches coming ;-)