Short answerTo keep stock identical on Mercado Libre and your store you need one source of truth (a master stock) and every sale must update all channels instantly. You can do it by hand, with a spreadsheet, or with an integration that uses Mercado Libre's official API; beyond a few sales a day, an integration is the only way to avoid selling what you don't have.
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StockSync
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If you sell on Mercado Libre and on your own store, sooner or later a sale comes in for something that already sold on the other side.
Three ways to sync
| Method | How it works | Good until |
|---|---|---|
| By hand | After each sale, fix the other channel | A few sales a week |
| Spreadsheet | A sheet is the reference and channels get updated now and then | A few sales a day |
| Integration | A system keeps the master stock and pushes it on every sale | Any volume |
When choosing an integration, check that it updates on every sale, uses the official Mercado Libre API, and supports your store (WooCommerce, Shopify, Magento, VTEX).
Mercado Libre Integration
For sellers on Mercado Libre with their own online store
FAQ
Does Mercado Libre connect natively to WooCommerce or Shopify?
No. You need an app that uses both Mercado Libre's API and your store's API to move stock between them.
How often should stock update?
On every sale. Tools that sync hourly leave a window where you can sell the last unit twice.