compliantx402

Signed offer and receipt (JWS)

A compliant x402 challenge carrying a JWS-signed offer, and a signed receipt on the paid retry. The key is named by kid and resolved from /.well-known/did.json.

Your client should Pay it, then verify the offer and the receipt against the published key.

Protocol: x402
Network: Base Sepolia
Price: 0.0001 USDC
Scheme: exact
Facilitator: x402.org
Signed artifacts: JWS
Behavior: Compliant

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

Customize this test

Your endpointcompliant

/api/x402?offerReceipt=jws

Try it

curl -i "https://test402.com/api/x402?offerReceipt=jws"

Returns 402 with a spec-compliant challenge.

The signature is minted per request and shown here as a placeholder, and the offer’s validUntil is always 300s past the moment you ask. Run the curl to see the real artifact.

Response it will return (HTTP 402)

PAYMENT-REQUIRED: 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

{
  "x402Version": 2,
  "error": "PAYMENT-SIGNATURE header is required",
  "resource": {
    "url": "https://test402.com/api/x402?offerReceipt=jws",
    "description": "test402 challenge",
    "mimeType": "application/json"
  },
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:84532",
      "amount": "100",
      "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"
    },
    "offer-receipt": {
      "info": {
        "offers": [
          {
            "format": "jws",
            "acceptIndex": 0,
            "signature": "<signed per request -- run the curl to see it>"
          }
        ]
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "type": "object",
        "properties": {
          "offers": {
            "type": "array",
            "items": {
              "type": "object",
              "properties": {
                "format": {
                  "type": "string",
                  "const": "jws"
                },
                "acceptIndex": {
                  "type": "integer"
                },
                "signature": {
                  "type": "string",
                  "description": "JWS compact serialization containing the offer payload"
                }
              },
              "required": [
                "format",
                "signature"
              ]
            }
          }
        },
        "required": [
          "offers"
        ]
      }
    }
  },
  "note": "test402 scenario. quirk=none"
}