# PATCH shop/cart > Changes the quantity or data of an item in the cart. - Source: `api/routes/cart.php#L78` ```js fetch('/api/shop/cart', { method: 'PATCH', headers: { 'Accept': 'application/json', 'Content-Type': 'application/json', }, body: JSON.stringify({ "key": "products/cozy-socks", "quantity": 3 }), }); ``` ## API model `Wagnerwagner\Merx\Cart` ## Return type `Wagnerwagner\Merx\Cart` The cart including the updated item. ## Example response `PATCH /api/shop/cart` ```json { "code": 200, "data": { "checkout": { "title": "Checkout", "url": "https://shop.test/checkout" }, "isFromPrice": false, "isOrderable": true, "products": { "items": [ { "data": { "size": "42" }, "key": "products/nice-shoes", "page": { "template": "product", "url": "https://shop.test/products/nice-shoes", "uuid": "page://Yk4fR7tNq2Lm9VxC" }, "price": { "price": "€89.90", "priceIncludingTax": true, "priceNet": "€75.55", "priceNetRaw": 75.5499999999999971578290569595992565155029296875, "priceRaw": 89.900000000000005684341886080801486968994140625, "tax": { "price": "€14.35", "priceRaw": 14.3499999999999996447286321199499070644378662109375, "rate": "19%", "rateRaw": 0.190000000000000002220446049250313080847263336181640625 } }, "quantity": 1, "thumb": null, "title": "Nice Shoes", "total": { "price": "€89.90", "priceIncludingTax": true, "priceNet": "€75.55", "priceNetRaw": 75.5499999999999971578290569595992565155029296875, "priceRaw": 89.900000000000005684341886080801486968994140625, "tax": { "price": "€14.35", "priceRaw": 14.3499999999999996447286321199499070644378662109375, "rate": "19%", "rateRaw": 0.190000000000000002220446049250313080847263336181640625 } }, "type": "product", "url": "https://shop.test/products/nice-shoes" }, { "data": null, "key": "products/cozy-socks", "page": { "template": "product", "url": "https://shop.test/products/cozy-socks", "uuid": "page://bP3wZs8HdE6uJa1Q" }, "price": { "price": "€12.50", "priceIncludingTax": true, "priceNet": "€10.50", "priceNetRaw": 10.5, "priceRaw": 12.5, "tax": { "price": "€2.00", "priceRaw": 2, "rate": "19%", "rateRaw": 0.190000000000000002220446049250313080847263336181640625 } }, "quantity": 3, "thumb": null, "title": "Cozy Socks", "total": { "price": "€37.50", "priceIncludingTax": true, "priceNet": "€31.51", "priceNetRaw": 31.510000000000001563194018672220408916473388671875, "priceRaw": 37.5, "tax": { "price": "€5.99", "priceRaw": 5.9900000000000002131628207280300557613372802734375, "rate": "19%", "rateRaw": 0.190000000000000002220446049250313080847263336181640625 } }, "type": "product", "url": "https://shop.test/products/cozy-socks" } ], "total": { "price": "€127.40", "priceIncludingTax": true, "priceNet": "€107.06", "priceNetRaw": 107.06000000000000227373675443232059478759765625, "priceRaw": 127.400000000000005684341886080801486968994140625, "tax": { "price": "€20.34", "priceRaw": 20.339999999999999857891452847979962825775146484375, "rate": "19%", "rateRaw": 0.190000000000000002220446049250313080847263336181640625 } } }, "quantity": 4, "shippings": { "items": [ { "data": null, "key": "shipping", "page": null, "price": { "price": "€4.90", "priceIncludingTax": null, "priceNet": "€4.12", "priceNetRaw": 4.12000000000000010658141036401502788066864013671875, "priceRaw": 4.9000000000000003552713678800500929355621337890625, "tax": { "price": "€0.78", "priceRaw": 0.7800000000000000266453525910037569701671600341796875, "rate": "19%", "rateRaw": 0.190000000000000002220446049250313080847263336181640625 } }, "quantity": 1, "thumb": null, "title": "Shipping", "total": { "price": "€4.90", "priceIncludingTax": null, "priceNet": "€4.12", "priceNetRaw": 4.12000000000000010658141036401502788066864013671875, "priceRaw": 4.9000000000000003552713678800500929355621337890625, "tax": { "price": "€0.78", "priceRaw": 0.7800000000000000266453525910037569701671600341796875, "rate": "19%", "rateRaw": 0.190000000000000002220446049250313080847263336181640625 } }, "type": "shipping", "url": null } ], "total": { "price": "€4.90", "priceIncludingTax": null, "priceNet": "€4.12", "priceNetRaw": 4.12000000000000010658141036401502788066864013671875, "priceRaw": 4.9000000000000003552713678800500929355621337890625, "tax": { "price": "€0.78", "priceRaw": 0.7800000000000000266453525910037569701671600341796875, "rate": "19%", "rateRaw": 0.190000000000000002220446049250313080847263336181640625 } } }, "taxRates": [ { "price": "€21.12", "priceRaw": 21.120000000000000994759830064140260219573974609375, "rate": "19%", "rateRaw": 0.190000000000000002220446049250313080847263336181640625 } ], "total": { "price": "€132.30", "priceNet": "€111.18", "priceNetRaw": 111.18000000000000682121026329696178436279296875, "priceRaw": 132.30000000000001136868377216160297393798828125 } }, "status": "ok", "type": "model" } ```