Welcome to Ted’s Content Factory#

Everything published here—books, apps, and everything else—is content. I’ll keep adding new kinds of content over time.
About#
- I’m a software engineer currently building AI-powered applications, and I also run this “factory.”
- Profile: iamted.kim
Content#
- Books: Serialized and organized “books.” (Go to Books)
- Apps: Notes on apps I’ve personally built, launched, and operated. (Go to Apps)
- Widgets: Experimental tools / mini games built with just HTML and JavaScript. (Go to Widgets)
- Notes: General posts that don’t fit under Books/Apps (tech, life, opinions). (Go to Notes)
- News: Short curated briefings on AI and technology updates worth checking. (Go to News)
Latest Content

How Product Development Processes Should Change in the Age of AI Agents
An essay on how product teams should handle code changes created directly by planners using AI agents, with a focus on intent transfer, review, and harnesses.

Math Track
A single-player mental-math trainer: roll a die, move around a square track, and keep a running total of the operations at each cell. Enter the correct final value when your pawn returns to the start to advance to the next level.

How to Add Coding Runtimes to an AI Agent Web Service
This essay explores how an AI agent web service can adopt coding runtimes such as Claude Code, Codex, and Gemini CLI, which tools are worth evaluating first, and where the real product moat likely lives.

Hermes Agent — Is It the Luxury Brand of AI Agents? A First Impression
A record of getting to know Nous Research's Hermes Agent. From analyzing a teammate's Pulumi deployment, to installing it locally on a Mac and connecting it to Slack, to a first impression and the operational questions worth following up on.

Claude Managed Agents — Can It Replace Your Existing Agent System?
A practical comparison of Anthropic's Managed Agents with existing multi-agent systems, covering architecture design, Memory Store, and governance considerations for real-world adoption.

In the AI Era, How Will Work Be Divided Again?
An essay on how AI and internal harness environments are changing the way work is divided inside companies, and why ownership and quality systems matter more than rigid job titles.

Where Should You Use Codex? A Guide to CLI, App, Cursor, and Claude Code
A beginner-friendly guide to the different environments for using OpenAI Codex, what stays the same across them, what differs, and when each option makes the most sense.

Harness Engineering — A Practical Guide to Safe AI Agent Operations
A practical guide covering the concepts, components, and project-type-specific application methods of harness engineering for reliably integrating AI agents into projects.

In the AI Era, What Should Developers Own?
An essay on the excitement and anxiety I felt as a developer in the AI era, and how I came to believe that ownership matters more than the mere ability to produce.
Latest News
2026-05-12 AI News Brief
OpenAI Deployment Company, Google's AI misuse security report, GitHub MCP secret scanning GA, Copilot cloud agent configuration, and NVIDIA's 2026 AI adoption report.
2026-05-09 AI News Brief
OpenAI's new Realtime API voice models, GPT-5.5-Cyber, Anthropic's SpaceX compute deal, Cursor 3.3, and GitHub Copilot VS Code updates.
2026-05-02 AI News Brief
Cursor team marketplaces, GitHub Copilot model deprecations, Claude Security, Pentagon AI deals, and an Anthropic MCP video.
2026-04-30 AI News Brief
Cursor SDK, OpenAI on AWS, Symphony, Nemotron 3 Nano Omni, and Ask YouTube.