About

Built by sellers, for sellers.

409 Labs is the product studio of Project409, a Korean cross-border e-commerce business founded in 2022. We sell on Qoo10 Japan and Joom, and we build the tools we need to sell faster.

Our story

In 2024 we wrote down one goal: semi-automate the three jobs that eat a seller's week, sourcing, listing and detail pages. We built a sourcing engine first, then an auto-listing engine, then a Sheets to Figma page prototype.

Each worked on its own. Claude is how we connect them into a single agent that reads the market, writes the page and publishes the listing, with a person approving each step.

2022Project409 founded, cross-border e-commerce
2024Sourcing Engine in daily use
2025Auto-Listing Engine runs a 5,000 product store
2025Sheets to Figma detail page prototype
2026409 Labs: one agent, built with Claude
Principles

How we build.

We sell first

Every tool starts as something we needed in our own stores, and is tested there before anyone else uses it.

Real reviews, honest copy

Selling points come from what real customers say. Copy follows marketplace and cosmetics advertising rules, with no exaggerated claims.

Human in the loop

The agent drafts, a person approves. Nothing is published to a marketplace without a review step.

Company

409 Labs is a brand of Project409 (프로젝트409)
CEO Kangmo Koo · Business Registration No. 164-24-01430
Seoul, Republic of Korea

Contact

woody@409labs.com

Selling K-beauty abroad?

We are onboarding a small group of Qoo10 Japan and Joom sellers. Tell us what you sell.

Request early access