Mercari ProApp

Brazilians living in Japan want to sell on Mercari but hit a language wall: titles, descriptions, hashtags and customer replies have to read like a native to win impressions in the Japanese algorithm.

MercariPro turns a single photo and a Portuguese sentence into a complete Japanese listing — optimized title, on-page SEO description, hashtags and suggested price — ready to paste into the app in seconds.

• 01.

  Photo → Listing

  Upload an image; get a fully native Japanese listing pack generated by the Claude API.

• 02.

  Smart price suggestions

  Cross-references category and condition to surface the best-selling price band on Mercari.

• 03.

  Freemium with Stripe

  Three free listings, no card required; smooth upgrade for heavy use.