x402 Payments Playground

Configure payment request parameters and run an end to end paid API call.

Documentation

Configuration

Amount in USD quoted for payment requirements.

Blockchain timestamp receipt

Paid API Call
$0.01 USDC

Pay for access with USDC on Base.

API Call Response

Ready for a paid API request.

Use custom URL

Default playground endpoint: https://api.relai.fi/api/playground/premium?network=base&asset=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&amountUsd=0.01&payTo=0x1892f72fdB3A966b2AD8595aA5f7741Ef72d6085&waitUntil=simulated&paymentScheme=exact

Enable the switch to unlock this field.