Developer Testing

Sandbox & Testnet Testing

Test real blockchain transactions using crptoX Sandbox. Follow our network-specific guides to obtain test tokens, send payments, and verify invoice processing.

Testnet tokens only

Sandbox uses blockchain test networks. Testnet tokens have no monetary value. Never send real mainnet assets to a Sandbox payment address.

Supported Test Networks

Choose a blockchain network to view its wallet setup, faucet resources, token transfer instructions, and payment verification guide.

TRON TRC-20

TRON Shasta

Use TronLink to send test payments. Native gas token: TRX.

usdt

View testing guide →

EVM ERC-20

Ethereum Sepolia

Use Rabby to send test payments. Native gas token: ETH.

usdt usdc

View testing guide →

EVM BEP-20

BNB Smart Chain Testnet

Use Rabby to send test payments. Native gas token: BNB.

usdt

View testing guide →

EVM ERC-20

Polygon Amoy

Use Rabby to send test payments. Native gas token: POL.

usdt usdc

View testing guide →

End-to-End Testing Workflow

1
Create a dedicated test wallet and select the correct test network.
2
Obtain the native testnet token required for transaction fees.
3
Obtain supported test USDT or USDC tokens using the correct contract.
4
Create an invoice using your crptoX Sandbox API secret.
5
Transfer the test tokens to the payment address returned by the API.
6
Verify the transaction, invoice status, and webhook delivery.

Create Your First Test Invoice

Use the Create Invoice API endpoint with a Sandbox API secret. Select a supported network and asset combination.

Create Invoice