The Startup Ideas Podcast
The Startup Ideas Podcast

I got a private lesson on OpenAI's NEW Agent Builder

October 8, 2025

AI Summary

5 min read

Amir recently attended OpenAI’s dev day and came away with a clear, practical take: the new Agent Builder, ChatKit, and Widgets are designed to lower the barrier for non-technical people to build and deploy multi-agent workflows. In this episode, he walks through building a working customer support and lead capture chatbot from scratch, using only the visual interface and a few lines of embed code. The goal is to show exactly how these pieces fit together and what it takes to get a custom agent live on a website without a full engineering team.

The three new pieces: Agent Builder, ChatKit, and Widgets

The core update is the Agent Builder, a visual drag-and-drop interface for creating multi-agent workflows. Instead of writing code to orchestrate parallel or sequential agent steps, you now connect nodes that represent actions: collecting input, adding tools (like web search or file retrieval), setting logic conditions, and transforming data. You can also add guardrails for safety and quality, such as hiding personal information or moderating harmful inputs. The key psychological shift here is that it reduces the barrier for non-technical people to build agent workflows, much like graphical user interfaces made computers accessible to people who didn't want to use a command line.

Continue reading the full summary in the app — free to try.

Read Full Summary →

Free • No credit card required

What you'll learn

  • 1 (00:00) **Episode Introduction & Goal** - Amir and Greg set up the episode: they will build a demo chatbot using OpenAI's new Agent Builder, Chat Kit, and Widgets.
  • 2 (00:59) **Three Big Updates from Dev Day** - Amir breaks down the three key releases: Agent Builder, Chat Kit, and Widgets.
  • 3 (03:57) **Building the Workflow in Agent Builder** - Amir walks through the visual node-based interface for creating a multi-agent workflow.
  • 4 (07:09) **How to Write Agent Instructions** - Amir explains how to create prompts for each agent, including using ChatGPT to generate prompts and the built-in "enhance" button.
  • 5 (10:00) **Minimal vs. High Reasoning** - Amir clarifies the trade-off between speed/cost and task complexity when choosing reasoning levels for each agent.
  • 6 (11:14) **What is an MCP?** - A quick layman's explanation of the Model Context Protocol (MCP) for connecting LLMs to external tools.
  • 7 (12:17) **Guardrails and Iteration** - Amir emphasizes the importance of guardrails for input/output moderation, jailbreak prevention, and hallucination control.

+ Full timestamped outline available in the app

Show Notes

Join me as I chat with Amir about how to use OpenAI's new Agent Builder to create a multi-agent chatbot workflow that can classify user inquiries, provide customer support, and capture lead information. The video showcases how to build a complete solution using vector stores for context, logic nodes for decision-making, and ChatKit for website integration, all without requiring extensive coding knowledge.

Timestamps:

00:00 - Intro

00:57 - Overview of Agent Builder

02:13 - Overview of ChatKit

03:05 - Overview of Widgets

03:57 - Building a workflow with classifier and support/lead agents

13:57 - Demo of support/lead agents

16:29 - Integration with ChatKit to embed the chatbot on websites

19:23 - Differences between Agent Builder vs other alternatives

20:48 - Key Takeaways

25:25 -Opportunities for founders

Key Points:

• OpenAI released three major tools: Agent Builder (visual workflow creator), ChatKit (SDK for embedding chatbots), and Widgets (dynamic UI components)

• Agent Builder allows non-technical users to create multi-agent workflows with a drag-and-drop interface

• The demo shows how to build a chatbot that classifies users as leads or existing customers and responds accordingly

• ChatKit enables easy integration of these workflows into websites without developer dependency

The #1 tool to find startup ideas/trends - https://www.ideabrowser.com

LCA helps Fortune 500s and fast-growing startups build their future - from Warner Music to Fortnite to Dropbox. We turn 'what if' into reality with AI, apps, and next-gen products https://latecheckout.agency/

Boringmarketing - Vibe Marketing for Companies: boringmarketing.com 

The Vibe Marketer - Join the Community and Learn: thevibemarketer.com

Startup Empire - get your free builders toolkit to build cashflowing business -

The Startup Ideas Podcast