Payments · x402 · early usage

TESTNET / MOCK

TESTNET / MOCK. Amazon.co.jp eGift card, JPY 1,000 face value, for 6.67 USDC on Base Sepolia (demo rate 1 USDC = JPY 150). POST with no body; the 402 is the quote. Returns a MOCK code that is not a real gift card.

by gift-by-crypto-agent.kitano787.workers.dev · discovered, not yet claimed by its owner · updated 2026-10-13

30d calls9

30d payers3

MethodPOST

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Tags: gift-card · amazon-japan · egift · testnet · mock · bazaar · offer-receipt

Call contract

Method: POST
Input: json
Output: json
Last paid call: 2026-10-13

Input example from Bazaar metadata

{}

Output example

{
  "code": "MOCK-0123456789abcdef",
  "explorer": "https://sepolia.basescan.org/tx/0x0000000000000000000000000000000000000000000000000000000000000000",
  "faceValue": {
    "amount": 1000,
    "currency": "JPY"
  },
  "mock": true,
  "notice": "TESTNET / MOCK: Base Sepolia test USDC only. Codes are mocks, not real Amazon gift cards.",
  "payer": "0x0000000000000000000000000000000000000000",
  "price": {
    "amount": "6.67",
    "asset": "USDC",
    "network": "eip155:84532"
  },
  "product": "Amazon.co.jp eGift card JPY 1000 (MOCK)",
  "sku": "amazon-jp-1000",
  "testnet": true,
  "tx": "0x0000000000000000000000000000000000000000000000000000000000000000"
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/33217.json for the price and payment options.
Pay. Call GET https://gift-by-crypto-agent.kitano787.workers.dev/v1/egift/amazon-jp/1000. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base Sepolia, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: see accepts
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base Sepolia
Demand: 9 calls · 3 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base Sepolia eip155:84532	USDC	6670000	0x8aC20aB2AF691b85c0eff1D39bb4ebFEF164aE28	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:84532",
    "payTo": "0x8aC20aB2AF691b85c0eff1D39bb4ebFEF164aE28",
    "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
    "amount": "6670000",
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "code": {
          "description": "Mock gift code (not redeemable)",
          "pattern": "^MOCK-[0-9a-f]{16}$",
          "type": "string"
        },
        "explorer": {
          "description": "Settlement tx on Sepolia Basescan",
          "format": "uri",
          "type": "string"
        },
        "faceValue": {
          "properties": {
            "amount": {
              "type": "integer"
            },
            "currency": {
              "type": "string"
            }
          },
          "type": "object"
        },
        "mock": {
          "const": true,
          "type": "boolean"
        },
        "notice": {
          "type": "string"
        },
        "payer": {
          "description": "EIP-3009 signer address",
          "type": "string"
        },
        "price": {
          "properties": {
            "amount": {
              "type": "string"
            },
            "asset": {
              "type": "string"
            },
            "network": {
              "type": "string"
            }
          },
          "type": "object"
        },
        "product": {
          "type": "string"
        },
        "receipt": {
          "description": "Signed receipt (x402 offer-receipt extension, also in PAYMENT-RESPONSE): an EdDSA JWS over resourceUrl, payer, network, issuedAt and transaction, signed by the key published at /.well-known/did.json",
          "properties": {
            "format": {
              "const": "jws",
              "type": "string"
            },
            "signature": {
              "description": "JWS compact serialization",
              "type": "string"
            }
          },
          "type": "object"
        },
        "sku": {
          "type": "string"
        },
        "testnet": {
          "const": true,
          "type": "boolean"
        },
        "tx": {
          "description": "Settlement tx hash (the order ID); also in PAYMENT-RESPONSE",
          "pattern": "^0x[0-9a-fA-F]{64}$",
          "type": "string"
        }
      },
      "required": [
        "testnet",
        "mock",
        "sku",
        "code"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {
    "code": "string",
    "explorer": "https://example.com",
    "faceValue": {
      "amount": 0,
      "currency": "string"
    },
    "mock": true,
    "notice": "string",
    "payer": "string",
    "price": {
      "amount": "string",
      "asset": "string",
      "network": "string"
    },
    "product": "string",
    "receipt": {
      "format": "string",
      "signature": "string"
    },
    "sku": "string",
    "testnet": true,
    "tx": "string"
  },
  "type": "string"
}

Examples

curl

curl "https://gift-by-crypto-agent.kitano787.workers.dev/v1/egift/amazon-jp/1000"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://gift-by-crypto-agent.kitano787.workers.dev/v1/egift/amazon-jp/1000");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://gift-by-crypto-agent.kitano787.workers.dev/v1/egift/amazon-jp/1000")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: gift-by-crypto-agent.kitano787.workers.dev
Endpoint: https://gift-by-crypto-agent.kitano787.workers.dev/v1/egift/amazon-jp/1000
Machine-readable: /resources/33217.json