In this conversation, Eric Simons, founder and CEO of StackBlitz, walks through one of the fastest and most consequential pivots in modern developer tooling. After nearly seven years building deep browser infrastructure and reaching roughly $700k in ARR, the company reoriented around Bolt, effectively defining the vibe-coding category and scaling past $15M ARR in a matter of months.

We go under the hood of the WebAssembly-based architecture that lets Bolt run a full Node.js environment directly in the browser, delivering near-instant feedback and fundamentally different unit economics than cloud-hosted VMs. Eric explains the specific model breakthrough that made full-stack, one-shot app generation viable, and why this moment reordered who actually builds software inside companies.

00:00 Introduction

00:36 The 7-Year History and Pivot Point

01:01 The Original WebAssembly Vision

03:20 Near Bankruptcy: $700k ARR

10:49 Sonnet 3.5: The Vibe Coding Unlock

14:23 The $15 Million ARR Board Meeting

17:19 The Web Container/WASM Advantage

22:07 Bolt Demo: Full-Stack App from a Prompt

31:09 The Changing Role of PMs and Designers

36:23 Mitigating AI-Generated Code Security Risks

47:31 The Entrepreneurial Mindset

53:35 What Eric is Tinkering With Now

In this episode of AI Tinkerers One-Shot, Joe sits down with Andrew Baker—serial builder, former Twilio engineer, and hands-on experimenter in agentic systems—to explore the rapidly evolving frontier of browser automation and AI-driven agents.

Andrew shares how his journey began with simple scripting experiments and gradually evolved into sophisticated browser agents capable of handling complex, real-world workflows. One standout example: an airline seat selector that used browser agents to secure optimal seats for frequent flyers—highlighting both the power and the limitations of today’s tooling.

Along the way, Andrew breaks down the practical challenges builders face when working with browser agents at scale:

• Vision model accuracy and UI interpretation

• DOM complexity and brittle page structures

• Authentication hurdles and session persistence

• The real economics of running large-scale automations

The conversation then shifts to “Claude Draws,” Andrew’s playful yet technically impressive side project that brings the classic 90s app Kid Pix into the age of AI. He explains how he wired up a remote PC, streamed sound output, and carefully crafted prompts that allow Anthropic’s browser agent to control a nostalgic art application—brushes, stamps, chaos, and all. The result is both a technical deep dive and a reminder that creativity is often where agentic tooling shines most.

Joe and Andrew also zoom out to examine the broader ecosystem shaping the future of browser-native agents. They discuss why UI accessibility matters for agents, how frameworks like Stagehand and Playwright are transforming automation workflows, and why personal evaluation benchmarks are becoming essential for builders pushing these systems beyond demos and into real usage.

💡 Resources & Links

Andrew Baker: https://www.linkedin.com/in/andrewtorkbaker

AI Tinkerers: https://aitinkerers.org

Andrew’s newsletter: https://implausible.ai

What you’ll learn

• How browser automation evolved from basic scripts to autonomous agents

• Why DOM parsing, vision models, and page structure still trip up agents

• How Claude for Chrome was used to control a web-based Kid Pix experience

• The architecture behind remote execution, sound streaming, and automation hacks

• How Stagehand and Playwright support modern browser automation

• The technical, economic, and ethical considerations shaping the future of browser agents

Chapters

00:00:15 — Introduction and AI Tinkerers Community

02:49 — Twilio Origins and Browser Automation Journey

04:50 — Building the Airline Seat Selector

07:51 — Browser Agent Challenges and Vision Models

10:44 — Stagehand Framework and Browser Automation Stack

13:28 — Claude for Chrome and Authentication

16:58 — Kid Pix Origins and Demo Setup

21:33 — Technical Architecture and Playwright Tricks

29:24 — Evaluation Platform and Personal Benchmarks

37:42 — Future of Browser Agents and Web Economics

Subscribe for more conversations with the builders shaping the future of AI, automation, and agentic systems.

What happens when a lifelong tinkerer turns curiosity into two major AI companies? In this episode of AI Tinkerers One Shot, Joe talks with Lukas Biewald—founder of Weights & Biases and CrowdFlower—about how early projects like robot cars and Raspberry Pi experiments shaped his engineering mindset and entrepreneurial path.

Chapters:

00:00 — Intro & Guest Background 02:07

— Early Tinkering and CrowdFlower 03:06

— Building Robot Cars and Meeting Pete Warden 08:41

— From Tinkering to Weights & Biases 12:27

— Parenting, Vibe Coding, and Kids as Makers 21:56

— 3D Printing and Creative Play 24:25

— AI Tools, Team Structure, and Company Growth 26:43

— Agentic Coding: Opportunities and Challenges 35:40

— AI in Production: Observability and Real-World Use Cases 49:28

— The Future of AI, Fine-Tuning, and RL

https://youtu.be/S84CjOrlMcY

In this episode of AI Tinkerers One-Shot, Joe sits down with Steve Yegge—engineer and creator of the Beads framework—to explore how open source tools are transforming the way we build with AI. Steve shares the story behind Beads, a new framework that gives coding agents memory and task management, enabling them to work longer, smarter, and more autonomously. From his days at Amazon and Google to leading engineering at Sourcegraph, Steve reveals how Beads is already reshaping developer workflows and why it’s gaining hundreds of contributors in just weeks.

What you’ll learn:

- How Beads gives coding agents “session memory” and lets them manage complex, multi-step projects.

- Why Steve believes the future of engineering is about guiding and supervising AI—rather than just writing code.

- The evolution from chaotic markdown files to structured, issue-based workflows.

- Techniques for multimodal prompting, automated screenshot validation, and “landing the plane” for session cleanup.

- The challenges and breakthroughs in deploying AI tools at scale within organizations.

- How Beads and similar frameworks are making it easier for both junior and senior developers to thrive in the age of AI.

Whether you’re a developer, tinkerer, or just curious about the next wave of AI-assisted coding, this deep dive with Steve Yegge will show you what’s possible now—and what’s coming next.

💡 Resources:

Beads – https://github.com/steveyegge/beads

Steve Yegge – https://www.linkedin.com/in/steveyegge/ & https://x.com/Steve_Yegge

AI Tinkerers – https://aitinkerers.org

Subscribe for more conversations with the builders shaping the future of AI and robotics!

00:00 - Introduction to Steve Yegge and Beads Framework

02:10 - Steve's Background and Source Graph AMP

08:00 - Building a React Game Client with AI Agents

15:36 - Multimodal Prompting and Screenshot Validation

23:16 - Code Review Techniques and Agent Confidence

32:01 - The Evolution of Beads: From Markdown Chaos to Issue Tracking

43:11 - Landing the Plane: Automated Session Cleanup

52:09 - Deploying AI Tools in Organizations

58:59 - Code Review Bottlenecks and Graphite Solution

01:02:57 - Closing Thoughts on AI-Assisted Development

What if your home robot didn’t just clean, but felt alive — learning, adapting, and becoming part of your family?

In this episode of AI Tinkerers One-Shot, Joe talks with Axel Peytavin, Co-founder & CEO of Innate, about his mission to create robots that aren’t just functional, but truly responsive companions. From his early start coding at age 11 to building one of the first GPT-4 Vision-powered robots, Axel shares how his team is creating an open-source robotics kit and one of the first agentic frameworks for robots — giving developers the tools to teach, customize, and build the next generation of embodied AI.

What you’ll learn:

- Why Axel believes “robots that feel alive” are the future — beyond flashy demos of backflips and kung fu.

- How Innate is making robotics accessible with an open-source hardware and SDK platform.

- The breakthroughs (and roadblocks) in fine motor manipulation, autonomy, and real-time learning.

- How teleoperation, deep learning, and reinforcement learning are shaping the next era of household robots.

- Axel’s vision for robots as companions: cleaning, tidying, assisting — and even calling for help in emergencies.

Whether you’re a tinkerer, developer, or just curious about how soon robots will fold your laundry, this deep dive shows what’s possible now — and what’s coming next.

💡 Resources:

- Innate Robotics – https://innate.bot/

- Axel Peytavin’s Twitter – https://x.com/ax_pey/

- AI Tinkerers – https://aitinkerers.org

Subscribe for more conversations with the builders shaping the future of AI and robotics!

0:00 Axel’s mission — building robots that feel alive

00:57 The open-source kit that lets any tinkerer train new behaviors

05:00 Why applied mathematics is the foundation for AI + robotics

08:17 Early projects: Minecraft plugins with 200K+ downloads

11:04 Innate’s vision for teachable household robots

12:01 Why fine-motor manipulation is the real breakthrough, not backflips

15:19 How deep learning is driving rapid robotics progress

17:11 Teleoperation as the engine for data collection and training

23:21 Why tidying up, laundry, and dishes are the killer apps for home robots

32:24 Live teleoperation demo of Maurice in action

36:08 Breaking down the system architecture — Wi-Fi, WebSockets, Python SDK

41:40 Maurice shows delicate fine-motor skills with object pickup

43:53 How Innate built one of the first agentic frameworks for robots

49:50 The rise of an open-source robotics community around Maurice

57:03 Viral GPT-4 Vision robot demo — and what it revealed about the future

Learn how to demystify large language models by building GPT-2 from scratch — in a spreadsheet. In this episode, MIT engineer Ishan Anand breaks down the inner workings of transformers in a way that’s visual, interactive, and beginner-friendly, yet deeply technical for experienced builders.

What you’ll learn:

• How GPT-2 became the architectural foundation for modern LLMs like ChatGPT, Claude, Gemini, and LLaMA.

• The three major innovations since GPT-2 — mixture of experts, RoPE (rotary position embeddings), and advances in training — and how they changed AI performance.

• A clear explanation of tokenization, attention, and transformer blocks that you can see and manipulate in real time.

• How to implement GPT-2’s core in ~600 lines of code and why that understanding makes you a better AI builder.

• The role of temperature, top-k, and top-p in controlling model behavior — and how RLHF reshaped the LLM landscape.

• Why hands-on experimentation beats theory when learning cutting-edge AI systems.

Ishan Anand is an engineer, MIT alum, and prolific AI tinkerer who built a fully functional GPT-2 inside a spreadsheet — making it one of the most accessible ways to learn how LLMs work. His work bridges deep technical insight with practical learning tools for the AI community.

Key topics covered:

• Step-by-step breakdown of GPT-2 architecture.

• Transformer math and attention mechanics explained visually.

• How modern LLMs evolved from GPT-2’s original design.

• Practical insights for training and fine-tuning models.

• Why understanding the “old” models makes you better at using the new ones.

This episode of AI Tinkerers One-Shot goes deep under the hood with Ishan to show how LLMs really work — and how you can start building your own.

💡 Resources:

• Ishan Anand LinkedIn – https://www.linkedin.com/in/ishananand/

• AI Tinkerers – https://aitinkerers.org

• One-Shot Podcast – https://one-shot.aitinkerers.org/

👍 Like this video if you found it valuable, and subscribe to AI Tinkerers One-Shot for more conversations with innovators building the future of AI!

In this episode of AI Tinkerers Global Stage, we go deep with Steve Krenzel, founder of LogicLoop and ex-CTO office at Brex. Steve shows us how his company turns standard operating procedures (SOPs) into fully functioning APIs—complete with schema generation, test cases, structured outputs, and backtesting—within seconds.

We break down:

1. Why Steve avoids agentic frameworks

2. How Logic automates 100K+ tasks/month for real customers

3. The power of structured output for reasoning and reliability

4. How prompt caching and append-only templates unlock scale

5. His open-source coding agent that builds software from scratch

6. How they achieved less than 2% error rates beating human teams

7. His famous Prompt Engineering Guide that went viral in 2023

If you’re building with LLMs, designing autonomous workflows, or just want to see what the future of developer productivity looks like—this is a must-watch.

Discover how Robert Lukoszko, CEO of Stormy AI, is building the future of AI-powered marketing by automating influencer outreach end-to-end. This interview goes deep into his journey from viral AI demos to Y Combinator, revealing critical insights for AI builders and founders.

You’ll learn:

• The surprising challenges and limitations of building AI applications that deeply integrate with operating systems.

• Why local AI models, despite their appeal, often struggle to compete with cloud-based solutions for real-world business cases.

• Robert’s unique approach to AI-assisted development, leveraging tools like Claude 3.7 for rapid prototyping and efficient coding.

• How Stormy AI uses advanced AI to find niche influencers, analyze engagement, and automate outreach, transforming traditional marketing.

• The strategic importance of distribution and market fit over pure technological innovation for venture-scale AI companies.

Robert Lukoszko, previously co-founder of Fixkey AI (acquired) and an alumnus of Y Combinator (S24 with Stormy AI, W22 with ngrow.ai), shares his extensive experience in applying AI to new modalities and building high-growth startups.

This episode of AI Tinkerers One-Shot offers a practical look at the technical and entrepreneurial realities of building in the generative AI space.

💡 Resources:

• Stormy AI - https://stormy.ai

• Robert Lukoszko’s LinkedIn - linkedin.com/in/robert-lukoszko

• AI Tinkerers - https://aitinkerers.org

• One-Shot Podcast - https://one-shot.aitinkerers.org/

Social Media:

@AITinkerers

@stormy_hq

@Karmedge

👍 Like this video if you found it valuable, and subscribe to AI Tinkerers One-Shot for more conversations with innovators building the future of AI!

00:00 – Introduction & Background

02:38 – Visual AI, Demos & Startup Idea

06:27 – Local vs. Cloud Models

10:07 – Desktop AI App & Context Importance

14:11 – Building the App & OS Integration

23:13 – Ambient AI & Contextual Vision

32:17 – Stormy AI Pivot & Demo

38:35 – AI Mindset & Content Creation

43:57 – AI Model Comparison & Cost