Testnet

TEST keys operate on TRON Nile. Register a Nile address under Settings (environment TEST), create invoices with a sk_test_ key and pay them with Nile test USDT.

• Nile faucet: request test TRX from the official Nile faucet, then obtain test USDT (the whitelisted Nile USDT contract is configured by the operator).
• Confirmation policy is the same as mainnet so your integration sees realistic timing.
• Test webhooks are delivered to endpoints created with environment TEST.

Never send mainnet USDT to a testnet address or vice versa — the gateway isolates the two networks completely and will not credit cross-network transfers.