x402 Playground — Live Demo

Test x402 Payments Live

Pick any tool, see the 402 response, watch the payment flow, and get integration code. Demo mode requires no wallet — or go live with real USDC.

How x402 Works

HTTP-native payments in 4 steps

The x402 protocol turns HTTP 402 into a real payment flow. Your agent pays in USDC — no human needed.

Step 01

📡

Agent Calls Tool

Normal POST request to any tool endpoint. No API key, no auth header needed.

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Step 02

💳

HTTP 402 Returned

Server returns the price in USDC, wallet address, network, and token contract.

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Step 03

🔐

Agent Pays USDC

Agent signs a USDC transfer on Base (or 14 other chains) and retries with X-Payment header.

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Step 04

✅

Tool Executes

Payment verified, tool runs, result returned. Done in <2 seconds. No human involved.

All Tools

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Click any tool to see what its 402 response looks like. Prices range from $0.001 to $0.10 USDC.

Fund your agent's wallet with USDC on Base and start making real x402 payments. Or get an API key and pay with credits.