Ma Tuan: the working panda pet I made for Codex
From character design, nine work states, and 16 look directions to an 8×11 validated spritesheet and public release—the complete Ma Tuan build story.
Indie builder · Global maker
Shimi is an independent builder shipping tools for global markets, and the author of a 21-module course on building AI agents. Everything on this site is designed, used, and documented by one person.


Counted from what is published on this site right now, not from a résumé.
Five tools I build for myself and use every day: researching stocks, discovering keywords, spotting demand, building backlinks, and publishing content.
All products →Keep scrolling for the next product




CHROME SIDE PANEL
CHROME SIDE PANEL

5 stages and 21 modules, from how agents actually work through to architecture and product design. Every lesson ships with a slide deck.
Course · taught in Chinese
From character design, nine work states, and 16 look directions to an 8×11 validated spritesheet and public release—the complete Ma Tuan build story.
Install and use Search Router to route queries across Tavily, Serper, Exa, and Brave, with automatic fallback when a provider fails.
A working record of one independent builder: five tools in daily use for global markets, an AI agent course open to read, and the open-source projects behind them.
Not yet. The five tools are private and built for personal use, so sign-ups are closed. A walkthrough is available on request.
No. All 21 modules are open to read and each lesson has a slide deck. It takes you from first principles to shipping an agent.
An idea becomes a working prototype, then goes into daily use. Whatever survives a month of real use gets documented and kept; the rest is dropped.
Have an idea, a collaboration, or simply want to talk about going global? My inbox is open. Open to thoughtful conversations and collaborations.