compliantx402

Zero-value charge

A well-formed challenge asking for 0 USDC on Base Sepolia.

Your client should Refuse to sign a zero-value payment.

Protocol: x402
Network: Base Sepolia
Price: 0 USDC
Scheme: exact
Facilitator: x402.org
Behavior: Compliant

A well-formed challenge. Your client should pay it.

Customize this test

Your endpointcompliant

/api/x402?amount=0

Try it

curl -i "https://test402.com/api/x402?amount=0"

Returns 402 with a spec-compliant challenge.

Response it will return (HTTP 402)

PAYMENT-REQUIRED: eyJ4NDAyVmVyc2lvbiI6MiwiZXJyb3IiOiJQQVlNRU5ULVNJR05BVFVSRSBoZWFkZXIgaXMgcmVxdWlyZWQiLCJyZXNvdXJjZSI6eyJ1cmwiOiJodHRwczovL3Rlc3Q0MDIuY29tL2FwaS94NDAyP2Ftb3VudD0wIiwiZGVzY3JpcHRpb24iOiJ0ZXN0NDAyIGNoYWxsZW5nZSIsIm1pbWVUeXBlIjoiYXBwbGljYXRpb24vanNvbiJ9LCJhY2NlcHRzIjpbeyJzY2hlbWUiOiJleGFjdCIsIm5ldHdvcmsiOiJlaXAxNTU6ODQ1MzIiLCJhbW91bnQiOiIwIiwiYXNzZXQiOiIweDAzNkNiRDUzODQyYzU0MjY2MzRlNzkyOTU0MWVDMjMxOGYzZENGN2UiLCJwYXlUbyI6IjB4MDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDQwMiIsIm1heFRpbWVvdXRTZWNvbmRzIjozMDAsImV4dHJhIjp7Im5hbWUiOiJVU0RDIiwidmVyc2lvbiI6IjIiLCJhc3NldFRyYW5zZmVyTWV0aG9kIjoiZWlwMzAwOSJ9fV0sImV4dGVuc2lvbnMiOnsiaHR0cHM6Ly90ZXN0NDAyLmNvbS9leHRlbnNpb25zL2ZhY2lsaXRhdG9yIjp7ImlkIjoieDQwMm9yZyIsInVybCI6Imh0dHBzOi8veDQwMi5vcmcvZmFjaWxpdGF0b3IifX19

{
  "x402Version": 2,
  "error": "PAYMENT-SIGNATURE header is required",
  "resource": {
    "url": "https://test402.com/api/x402?amount=0",
    "description": "test402 challenge",
    "mimeType": "application/json"
  },
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:84532",
      "amount": "0",
      "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
      "payTo": "0x0000000000000000000000000000000000000402",
      "maxTimeoutSeconds": 300,
      "extra": {
        "name": "USDC",
        "version": "2",
        "assetTransferMethod": "eip3009"
      }
    }
  ],
  "extensions": {
    "https://test402.com/extensions/facilitator": {
      "id": "x402org",
      "url": "https://x402.org/facilitator"
    }
  },
  "note": "test402 scenario. quirk=none"
}