ERC-20 USDT and USDC payment gateway

Create an invoice with USDT_ERC20 or USDC_ERC20 on eth-mainnet. The response carries a one-time deposit address, the amount due and the confirmations required.

POST /v1/invoices

{
  "referenceId": "order_10231",
  "fiat": { "amount": "1200.00", "currency": "USD" },
  "crypto": { "asset": "USDC_ERC20", "chainId": "eth-mainnet" }
}

ETH, USDT, USDC, DAI, WBTC, SHIB and PEPE, with deposits and withdrawals both supported. GET /v1/chains has the live list.

Network fees are set by the network and are typically higher on Ethereum mainnet than on Tron, BNB Smart Chain, Polygon or Arbitrum. That makes it a better fit for larger payments, where the fee is a small share of the amount, or for customers who already hold their balance there. For small baskets, offer a cheaper network alongside it — the comparison goes through the trade-offs.

• The invoice moves pending → detected → confirming → confirmed; your ledger is credited and a signed webhook fires. See crypto payment confirmations.
• The deposit is swept to your Ethereum wallet before it becomes withdrawable.
• Moving a token costs ETH. Where the gas station covers Ethereum you hold none; otherwise keep ETH in your wallet. Read gasSponsored on the wallet — see network fees and the gas station.