STUDIO001 — Selected Work
From sketch to launch, built to keep running.
A design and engineering studio in Seoul. Products people sign up for, AI that answers from real data, public-data apps.
Six of them, picked. What each one is, and what went into it.
- STUDIO001 / Measured, rebuilt. Measured to the pixel, rebuilt on Vite and GSAP. Our own images, six gates on every deploy.
- Jocoding AX Talent War 2026 / Audit agent for support ops. Channel Talk track finalist. A working audit agent for support ops, not a deck.
- STUDIO001 / in progress / Tycoon in 30 days. A browser zombie tycoon on a 30-day clock. Economy and waves designed first, then built feature by feature.
- Open source / yeongjunyoo / Ask data plainly. On-prem MCP server routing questions to vector search, NL2SQL or a graph. 68-question gold set, hit@5 0.985.
- Three universities / Grading the thinking. Grades how students use AI, not just the answer. Co-built, run across 11 exams at 3 universities, 441 sittings.
- Korea tourism open data / Past first review. Built on Korea’s open tourism data, past the contest’s first review. Public APIs as a product, not a demo.
Designed and built by the same hands. No handoff, so it can be fixed while it is being made.
- Design: Editorial systems, Interface design, Art direction, Design systems, Typography, Motion, Prototyping
- Build: Web products, AI agents, Data interfaces, Front-end development, Back-end development, Retrieval and RAG, Automation pipelines, Performance
- Ship: Public API apps, Open-source entries, Working prototypes, Deployment and hosting, Analytics, Documentation, Maintenance, Contest entries
Measured before built, tested before shipped. The record stays in the open.
Send the problem, not a spec. You get back scope, time and a first working piece. hello@studio001.co.kr
STUDIO 001 is a sole proprietorship founded in January 2026 and run by its representative, Yeongjun Yoo.
Korean business registration 899-15-02775, registered 2026-01-22 (VAT general taxpayer). Mail-order business report No. 2026-Seoul Mapo-0271.
Address: 196 World Cup-ro, Mapo-gu, Seoul, South Korea. Contact: hello@studio001.co.kr. Code: github.com/yeongjunyoo.
We build with Claude Code every day and have been paying Claude Max subscribers since January 2026.