In Leon van Zyl’s latest YouTube tutorial, viewers are given a comprehensive guide on using OpenAI’s Agent Builder. Released on October 7, 2025, the video titled “Master OpenAI Agent Builder in 30 Minutes (Step-by-Step Tutorial)” has achieved a notable reception with 6,729 views, 229 likes, and 36 comments. Across a 28-minute runtime, the guide delves into the intricacies of crafting agentic workflows utilizing a visual interface, advancing from basic customer-facing assistants to sophisticated research agents capable of web exploration and report generation. It is noteworthy that Leon emphasizes that contrary to popular belief, the Agent Builder is not a replacement for tools like Zapier or N8N, but rather a companion in the creation of agent workflows. Throughout the tutorial, the deployment of agents into applications using ChatKit, real-time state management, and the integration of the Agent SDK with Next.js projects are unveiled. While the tutorial stands as a powerful resource for those new to the Agent Builder, it appears to sidestep deeper contextual experiences that might aid seasoned programmers seeking advanced insights. Still, Leon’s stepwise ecosystem explanation, such as the inclusion of guardrails for moderation and human-in-the-loop approvals, gives a solid foundation for users. The tutorial’s straightforward accessibility, while imposing limitations on the complexity newcomers might encounter, provides a launchpad for understanding OpenAI’s Agent Kit ecosystem, without overpromising capabilities beyond its realistic scope.