AI Inference · x402 · early usage

Catch drift when everything still looks green

by datasourcepulse.com · 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

Catch drift when everything still looks green. Check available Apify Actor run history and sampled output for schema drift and unexpected empty results. Additional checks cover HTTP responses, credential validity and available quota. One paid call returns a timestamped verdict and supporting details. A successful run or valid credential does not guarantee useful data. This endpoint checks once; it does not send alerts.

Tags: x402 · monitoring · reliability · agents · data-quality · bazaar

Call contract

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

Input example from Bazaar metadata

{
  "type": "credential",
  "url": "https://example.com",
  "vendor": "generic_http"
}

No output exampleProvider did not publish one in Bazaar metadata.

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/52575.json for the price and payment options.
Pay. Call GET https://datasourcepulse.com/api/x402/check. 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: $0.02 / 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	$0.02	0x7cCb91a3ad4c45097bDA4C3C29d2Cc89fA93Ab36	90s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x7cCb91a3ad4c45097bDA4C3C29d2Cc89fA93Ab36",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "20000",
    "amountUsd": 0.02,
    "maxTimeoutSeconds": 90
  }
]

Examples

curl

curl -X POST 'https://datasourcepulse.com/api/x402/check' -H 'Content-Type: application/json' --data '{"type":"credential","url":"https://example.com","vendor":"generic_http"}'
# -> 402 Payment Required; read PAYMENT-REQUIRED
# retry the identical request with PAYMENT-SIGNATURE

JavaScript

const res = await fetch("https://datasourcepulse.com/api/x402/check", {
  "method": "POST",
  "headers": {
    "content-type": "application/json"
  },
  "body": "{\"type\":\"credential\",\"url\":\"https://example.com\",\"vendor\":\"generic_http\"}"
});
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://datasourcepulse.com/api/x402/check", json=json.loads("{\"type\":\"credential\",\"url\":\"https://example.com\",\"vendor\":\"generic_http\"}"))
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: datasourcepulse.com
Endpoint: https://datasourcepulse.com/api/x402/check
Machine-readable: /resources/52575.json