Interactive Demo

Try X402 Live

Experience both payment schemes with real Solana devnet transactions. See exactly how the X-PAYMENT header is constructed and verified.

Payment Channel Flow

Channel Mode • /api/kitten • $0.01 per request

Understanding the Flow

Each demo creates real transactions on Solana devnet. The detailed request/response flow shows exactly how X-PAYMENT headers are constructed, sent, and verified by the server.

On-Chain: USDC transaction → X-PAYMENT header → Server verifies on blockchain

Channel: Signature → X-PAYMENT header → Server verifies signature