Choose the payment source

Select the source when creating the invoice

{
  "usd_amount": "25.00",
  "asset": "EURC_SOLANA"
}

Offer your buyer the supported sources you accept, then create the invoice with their selection and a stable Idempotency-Key. Use usd_amount for a dollar price or amount for a price in the selected source coin.

Merchant preferences

Select accepted sources under Settings → Accepted coins. The default accepts all available sources. Creation APIs reject a source that is disabled for your account.

Live instructions do not switch

Live checkouts do not have a coin picker. The legacy allow_asset_selection option does not enable live switching, even before payment. To change the source, create a new invoice with a new order identity. Preserve the old invoice when reconciling any payment already sent to its address.

Show the returned payment_instructionsto the payer. These identify the source coin and amount; the invoice's financial fields and merchant settlement use USDC on Base.

Card purchases

Card purchase is available only when the new checkout's source is USDC_BASE. It uses the existing invoice address and does not switch another source to USDC. Other Bridge sources do not show a card option. See Buy with card.