Utilities · x402 · early usage

What are agents asking for that they cannot buy yet, aggregated over 30 days

by agentdata-api.sander-van-aard.workers.dev · discovered, not yet claimed by its owner · updated 2026-10-08

30d calls2

30d payers2

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

What are agents asking for that they cannot buy yet, aggregated over 30 days. From our own measurements: calls we rejected on an uncovered value where the caller had already presented payment (kind is typically coin, country, vies_country, monitor_host or sms_service — free-form values possible), free requests filed by agents, and settled $0.01 intents. Demand at one provider, not a network-wide picture. Aggregates only: no wallets, no free text, no subject ids.

Tags: bazaar

Call contract

Method: POST
Input: json
Output: json
Last paid call: 2026-10-08

Input example from Bazaar metadata

{}

Output example

{
  "checked_at": "2026-07-29T08:00:00.000Z",
  "coverage": {
    "first_measurement": "<timestamp of our oldest observation, or null>",
    "sources": [
      "unmet-demand telemetry from rejected calls that carried a verified payment proof",
      "free coverage requests",
      "settled paid intents"
    ],
    "window_days": 30
  },
  "disclaimer": "Demand as observed at ONE provider, shaped by what we happen to sell and who happens to find us. Absence of demand here is not evidence of absence of a market.",
  "filed_requests": [
    {
      "distinct_days": 0,
      "distinct_senders": 0,
      "kind": "country",
      "requests": 0,
      "value": "XX"
    }
  ],
  "methodology": "Illustrative placeholder values, not a measurement. Real responses carry the full methodology: only rejections after a verified payment proof count, external traffic only, per-sender spread beside every count, and price stats withheld below 3 named price points.",
  "paid_wants": {
    "distinct_wallets": 0,
    "max_price_usd": {
      "avg": null,
      "max": null,
      "min": null
    },
    "total": 0,
    "with_price": 0
  },
  "unmet_demand": [
    {
      "calls": 0,
      "distinct_days": 0,
      "distinct_wallets": 0,
      "kind": "coin",
      "value": "EXAMPLE-COIN"
    }
  ]
}

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/40091.json for the price and payment options.
Pay. Call GET https://agentdata-api.sander-van-aard.workers.dev/x402/demand-report. 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, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.05 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base
Demand: 2 calls · 2 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.05	0xb0ae6a9bd7a573ddda58db6c28622417e8ca2099	120s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xb0ae6a9bd7a573ddda58db6c28622417e8ca2099",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "50000",
    "amountUsd": 0.05,
    "maxTimeoutSeconds": 120
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

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

{
  "example": {},
  "type": "string"
}

Examples

curl

curl -X POST 'https://agentdata-api.sander-van-aard.workers.dev/x402/demand-report' -H 'Content-Type: application/json' --data '{}'
# -> 402 Payment Required; read PAYMENT-REQUIRED
# retry the identical request with PAYMENT-SIGNATURE

JavaScript

const res = await fetch("https://agentdata-api.sander-van-aard.workers.dev/x402/demand-report", {
  "method": "POST",
  "headers": {
    "content-type": "application/json"
  },
  "body": "{}"
});
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
import json
res = httpx.request("POST", "https://agentdata-api.sander-van-aard.workers.dev/x402/demand-report", json=json.loads("{}"))
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: agentdata-api.sander-van-aard.workers.dev
Endpoint: https://agentdata-api.sander-van-aard.workers.dev/x402/demand-report
Machine-readable: /resources/40091.json