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# No API key. Payment is the auth.
$ curl "https://api.syntalic.com/v1/shopper/best-price?q=quest+protein+bar"
402 Payment Requiredx402
{
"tool": "best_price",
"q": "quest protein bar",
"payment": "USDC micropayment"
}
✓ 200 OK
{
"query": "quest protein bar",
"best_price": {
"retailer": "walmart",
"product_name": "Quest Nutrition Protein Bar, Cookies & Cream, 12 ct",
"price": 24.98,
"currency": "USD"
},
"other_prices": [
{ "retailer": "amazon", "price": 26.49 },
{ "retailer": "target", "price": 27.99 }
]
}