Japan Shopping Assistant or JSA is an extension designed for Chrome users who utilize Sendico or Buyee for purchasing items from Japan. This tool seamlessly integrates with Japan's major online marketplaces, including Yahoo Auctions, Mercari, Rakuten Rakuma, Yahoo Shopping, and Yahoo Flea Market. Whether you are a casual shopper or a dedicated collector, JSA enhances your shopping experience by enabling easy translation, saving, managing, and purchasing of items from various Japanese platforms.

The extension allows users to search across five Japanese markets directly from Sendico or Buyee, providing a convenient way to navigate and buy items from Japan. With features like instant opening of product pages, accurate marketplace search results, and additional premium features in the paid version, Japan Shopping Assistant aims to optimize the shopping process for those who rely on Sendico and Buyee for their Japanese purchases.