kwakseongjae/oh-my-design: Give your AI coding agent a design system. One command installs 500+ quality-graded company DESIGN.md references + skills into Claude Code, Codex, Cursor, and OpenCode. Free, MIT, zero AI calls.

A DESIGN.md archive and frontend skills for CJK screens.

English · 한국어 · 日本語 · 繁體中文

Your coding agent writes good React. It has no idea what “Toss-style” means, and it will happily break 있어요 across two lines.

oh-my-design fixes both.

!One screen rebuilt from three DESIGN.md files: Toss, freee and 104

_{One screen, three DESIGN.md files: Toss (Korea), freee (Japan), 104 (Taiwan). Every value on it comes from the archive. Try it at oh-my-design.kr.}

npx oh-my-design-cli@latest

Works in Claude Code, Codex, OpenCode and Cursor. No API key, no MCP server: your agent brings the brain, we bring the receipts.

Two halves

The archive. DESIGN.md files for 500+ real products: Toss, Stripe, LINE, pixiv, Linear and the rest. Each one is graded by how well its values are sourced, and the rule is simple: if nobody could confirm a value, it stays blank. Browse it, or let your agent fetch oh-my-design.kr//design.md.

The skills. Frontend skills written CJK-first. Korean that wraps between words, never inside one. Korean, Japanese and Chinese display type that stays real, selectable text. Copy that reads native in five languages. Plus the usual polish, with numbers attached: interface feel, restraint, slop audits. All skills →

Your first 60 seconds

1. Install (above), then restart your agent so it loads the skills.
2. Send:

1. Then:

Not a Toss person? Swap in any company from the archive.

More

• Skills: what each one does, and how to install just one
• Install: each agent, global installs, Cursor, doctor, update
• DESIGN.md: both formats, how a system gets derived, omd book
• Docs · Changelog

MIT. Each DESIGN.md in the archive describes a company's design, which belongs to that company; it is reproduced here for educational reference.