409 Labs helps Korean sellers find proven products on Qoo10 Japan and Joom, turn real customer reviews into selling points, and publish localized detail pages in minutes.
Request early accessExplore productsSourcing Engine: recently sold items pulled from competitor shops, with price, sales count and reviews.
Figures from a founder-run test store on Qoo10 Japan, Feb to Jun 2025. See the case study.
Each engine started as a tool we needed in our own stores. Claude now ties them together into one workflow, with a person approving every batch.
Pull recently sold items from hundreds of reseller shops and spot products with high sales and few reviews.
Learn more →Turn Olive Young best sellers into Qoo10 Japan listings: images, price, title, category and brand, uploaded by API.
Learn more →Claude reads real reviews, writes Japanese and English copy, and fills Figma templates into finished pages.
Learn more →Rules handle the repeatable steps. Claude handles the steps that need reading and judgment: understanding reviews, writing localized copy, choosing categories and checking claims, all through tool use and MCP.
Product pages and images into clean JSON.
Buyer needs tagged with a consistent codebook.
Japanese and English pages, rule-checked.
Sheets and Figma via MCP, marketplace APIs, human approval.
Every product becomes one row. Every row becomes a finished, on-brand detail page, ready for review and upload.
Prototype: one Google Sheet syncs into a Figma template and fills a full set of detail pages at once.
We are onboarding a small group of Qoo10 Japan and Joom sellers. Tell us what you sell.