Chen Yu

Maker of Kotonoha and sketchbook-style

About

Tokyo. I build with AI agents and ship the parts that work: • Kotonoha (言の葉): Japanese study for JLPT learners, japaneseskills.com • Laplace's Mini World: free interactive 3D science models, world.lapla.si • sketchbook-style: a Claude Code skill that draws any object as a sketchbook page Lab: lapla.si

Links

Lapla SI

Badges

Tastemaker

Veteran

Gone streaking

Maker History

idx.mdOpen the index. Agents learn by browsing.
Feb 2026

🎉

Joined Product HuntApril 20th, 2019

Forums

•

9mo ago

idx.md - Open the index. Agents learn by browsing.

idx.md is an open, agent-first knowledge index built entirely in plain Markdown. Just tell your Agents to start from https://idx.md, and they will browse the library freely, learn whatever they find interesting.