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Payments · x402 · early usage

Trading card deal finder for card-investor and card-collector agents

Trading card deal finder for card-investor and card-collector agents. Returns eBay sold-vs-listed gap analysis to surface underpriced listings for arbitrage.

by gamepulse.theaslangroupllc.com · discovered, not yet claimed by its owner · updated 2026-09-25

30d calls1
30d payers1
MethodGET
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

Trading card deal finder for card-investor and card-collector agents. Returns eBay sold-vs-listed gap analysis to surface underpriced listings for arbitrage.

Tags: card-deals · ebay-arbitrage · sold-vs-listed · underpriced · card-investor-agent · bazaar · builder-code

Call contract

Method
GET
Input
query parameters
Output
json
Last paid call
2026-09-25
Input example from Bazaar metadata
{
  "game": "pokemon"
}
Output example
{
  "errors": {},
  "example": {},
  "type": "string"
}

Use with an agent

  1. Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
  2. Inspect. Fetch /resources/29004.json for the price and payment options.
  3. Pay. Call GET https://gamepulse.theaslangroupllc.com/api/cards/deal. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
  4. 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, Solana, Polygon, Arbitrum One, eip155:480, eip155:143, eip155:196, eip155:999, algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k, xrpl:0, eip155:56, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price
$0.15 / request
Protocol
x402 v2
Auth
No account or API key. Pay per request.
Networks
Base, Solana, Polygon, Arbitrum One, eip155:480, eip155:143, eip155:196, eip155:999, algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k, xrpl:0, eip155:56
Demand
1 calls · 1 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

SchemeNetworkAssetAmountPay toTimeout
exactBase
eip155:8453		USDC$0.150x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc300s
exactBase
eip155:8453		USDC$0.150x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc604900s
exactSolana
solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp		USDC$0.15985iFjbnGQ3dJcwXnfRCMSrH4Jnc3kW1N6msR64B5KX1300s
exactPolygon
eip155:137		USDC$0.150x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc300s
exactArbitrum One
eip155:42161		USDC$0.150x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc300s
exacteip155:480
eip155:480		0x79A02482A880bCe3F13E09da970dC34dB4cD24D11500000x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc300s
exacteip155:143
eip155:143		0x754704Bc059F8C67012fEd69BC8A327a5aafb6031500000x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc300s
exacteip155:196
eip155:196		0x779ded0c9e1022225f8e0630b35a9b54be7137361500000x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc300s
exacteip155:999
eip155:999		0xb88339CB7199b77E23DB6E890353E22632Ba630f1500000x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc300s
exactalgorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k
algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k		3156670415000062A253YPATFNJCPRKID3FKD77MYJFNTVRYRP4B4JWG36EGLPY7UXFWGI7I300s
exactxrpl:0
xrpl:0		XRP150000rMnHeutYALco8RYFVcmuU4BCgSzBpPEh32300s
exactxrpl:0
xrpl:0		524C5553440000000000000000000000000000000.15rMnHeutYALco8RYFVcmuU4BCgSzBpPEh32300s
exacteip155:56
eip155:56		0x8d0D000Ee44948FC98c9B98A4FA4921476f08B0d1500000000000000000x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc300s
accepts[] (raw JSON)
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "150000",
    "amountUsd": 0.15,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "150000",
    "amountUsd": 0.15,
    "maxTimeoutSeconds": 604900
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "985iFjbnGQ3dJcwXnfRCMSrH4Jnc3kW1N6msR64B5KX1",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "150000",
    "amountUsd": 0.15,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "150000",
    "amountUsd": 0.15,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "150000",
    "amountUsd": 0.15,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:480",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0x79A02482A880bCe3F13E09da970dC34dB4cD24D1",
    "amount": "150000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:143",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
    "amount": "150000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:196",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0x779ded0c9e1022225f8e0630b35a9b54be713736",
    "amount": "150000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:999",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0xb88339CB7199b77E23DB6E890353E22632Ba630f",
    "amount": "150000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k",
    "payTo": "62A253YPATFNJCPRKID3FKD77MYJFNTVRYRP4B4JWG36EGLPY7UXFWGI7I",
    "asset": "31566704",
    "amount": "150000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "xrpl:0",
    "payTo": "rMnHeutYALco8RYFVcmuU4BCgSzBpPEh32",
    "asset": "XRP",
    "amount": "150000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "xrpl:0",
    "payTo": "rMnHeutYALco8RYFVcmuU4BCgSzBpPEh32",
    "asset": "524C555344000000000000000000000000000000",
    "amount": "0.15",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:56",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0x8d0D000Ee44948FC98c9B98A4FA4921476f08B0d",
    "amount": "150000000000000000",
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)
{
  "properties": {
    "errors": {
      "additionalProperties": {
        "properties": {
          "description": {
            "type": "string"
          },
          "example": {
            "type": "object"
          }
        },
        "required": [
          "description"
        ],
        "type": "object"
      },
      "description": "Documented error responses, keyed by HTTP status code",
      "type": "object"
    },
    "example": {
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}
Example shape — generated from the schema, not a captured live response
{
  "errors": {},
  "example": {},
  "type": "string"
}

Examples

curl
curl "https://gamepulse.theaslangroupllc.com/api/cards/deal"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://gamepulse.theaslangroupllc.com/api/cards/deal");
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://gamepulse.theaslangroupllc.com/api/cards/deal")
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
gamepulse.theaslangroupllc.com
Endpoint
https://gamepulse.theaslangroupllc.com/api/cards/deal
Machine-readable
/resources/29004.json