Sandbox and production share the same paths, bodies and errors: going live changes only the base URL and the key.
A USDT wallet
Top up by sending USDT to your address: it is credited automatically once it confirms. Your balance is what you can spend.
Pay any merchant QR
Get a firm USDT quote for the QR’s amount; once your user accepts, send the QR with it and it is paid at once.
Nothing real moves
The sandbox runs on a testnet (Tron Shasta) with a test token, and QRs go to the QR network’s test environment: no merchant is ever paid.
Quick start
From your sandbox key to a paid QR, in ten calls.
API reference
Every endpoint, with a playground that calls the sandbox.