use LucasFidelis\MercadoLivreSdk\Client\Client;
use LucasFidelis\MercadoLivreSdk\Managers\ProductManager;

...

$itemId = 'MLB123456789';

$client = new Client($CLIENT_ID, $CLIENT_SECRET, $ACCESS_TOKEN, $REFRESH_TOKEN);
$productManager = new ProductManager($client);

$product = $productManager->findById($itemId);
$product->setPrice(123.45);
$productManager->updatePrice($product);

composer require lucasfidelis/mercado-livre-sdk

Feel free to open pull requests; we welcome contributions! However, for significant changes, it's best to open an issue beforehand. Before creating your own issue or pull request, always check to see if one already exists!

This project is not associated, authorized, endorsed by, or in any way with MercadoLibre.

MercadoLibre, as well as related names, marks, emblems and images are registered trademarks of their respective owners.