Table of Contents * Chapter 0: Preface: Why I Am Building This * Chapter 1: Introduction: Building the Loop * Chapter 2: Setting Up the Workspace Chapter 2: Setting Up the Workspace The first code chapter does not call a model. It does not parse a tool request. It does not know what
Table of Contents * Chapter 0: Preface: Why I Am Building This * Chapter 1: Introduction: Building the Loop * Chapter 2: Setting Up the Workspace Introduction: Building the Loop The word "agent" is already overloaded enough that it can hide more than it explains. Sometimes it means a chatbot with
Table of Contents * Chapter 0: Preface: Why I Am Building This * Chapter 1: Introduction: Building the Loop * Chapter 2: Setting Up the Workspace Preface: Why I Am Building This A few months ago, in April 2026, I wrote about reviving the avatar system from Yogurting, the game I worked on
Last Tuesday night (5/19), I went to the Computer History Museum to hear Joanna Stern talk about her new book, I Am Not a Robot: My Year of Using AI to Do (Almost) Everything. This was one of those Bay Area events that felt almost too easy to attend.
Not long after K-Pop Fireworks Night at Oracle Park, the real K-pop moment came much closer to my home. BTS came to Palo Alto. Technically, the venue was Stanford Stadium, not Palo Alto, and technically this was part of the BTS World Tour Arirang. But from our side of town,
The Giants are one of my favorite recurring topics on this blog, even when the team itself is not giving me much help. This season has been hard to watch in the usual torturous way of 2020s Giants baseball. Still, Oracle Park keeps pulling me back. Yes, that's
Last month, I got an invitation to Stripe Sessions 2026, and I still do not know exactly why. Maybe it was because my title says Director of Engineering at Toss. Maybe it was because I have been spending too much money on AI tools, and many of those payments quietly
The next book club selection with Ms. Salle was the Earthsea Cycle by Ursula K. Le Guin. The first book I read in the club was The Dispossessed, and I became almost obsessed with the beauty of her prose. I even tried to imitate her writing style for a while.
In the previous post, I set up Gemma 4 locally with MLX and connected it to my usual local-model workflow. That post was mostly about the environment itself: getting the model running, exposing it through an OpenAI-compatible endpoint, and making it usable from tools like Open WebUI. Once that was
In my previous post, I explored what it looks like to run coding agents with local LLMs on an M3 Ultra Mac Studio. That write-up was mostly about the environment itself: treating a single machine as something closer to personal infrastructure, capable of hosting multiple models and running them continuously
Introduction I started Yogurting in 2002 at Taff System, a Korean game studio that later became NTIX Soft. I began as the lead server programmer and later took on the role of producer. This post is also available on Medium. If you’re a paid Medium member and happen to
This past week, Crimson Desert has been everywhere, sitting right at the center of the conversation before launch. There were interviews, technical demos, and carefully edited gameplay clips coming out of Pearl Abyss, each one trying to show a bit more of what the game could be. And almost immediately,
