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Monitoring · x402 · early usage

Which x402 services actually deliver — every one paid-tested with real USDC, receipts o…

Which x402 services actually deliver — every one paid-tested with real USDC, receipts on-chain.

by 402atlas.com · discovered, not yet claimed by its owner · updated 2026-10-08

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

Which x402 services actually deliver — every one paid-tested with real USDC, receipts on-chain.

Tags: bazaar

Call contract

Method
GET
Input
query parameters
Output
json
Last paid call
2026-10-08
Input example from Bazaar metadata
{}
Output example
{
  "meta": {
    "cutoff": "2026-10-05",
    "note": "Counts are read from the payload itself at request time, not hardcoded here.",
    "published_paid_calls": 399,
    "services": 103
  },
  "reading_guide": {
    "every_record_here_is_verified": "verdict is \"verified\" for every record by construction — a service that fails as a whole is simply absent. Filtering on verdict alone tells you nothing; read \"result\" and \"endpoints_to_skip\" instead.",
    "read_this_first": "Each record is one HOST. Its \"tested\" array lists the endpoints we actually paid for, each with the request, the response, an on-chain receipt and a verdict. \"surface\" says how many payable endpoints that host declares; \"coverage\" says how many of them we bought.",
    "the_full_guide_is_in_the_response": "reading_guide at the top of the payload explains every field, including what we deliberately held back and why.",
    "we_do_not_publish_a_blacklist": "There is no avoid list in this payload. The only negative information here is attached to a service we recommend: where one of its endpoints failed our check, that endpoint is named under \"endpoints_to_skip\" with the receipt that showed it."
  },
  "services_by_category": {
    "<category>": [
      {
        "coverage": {
          "categories_tested": 9,
          "categories_total": 117,
          "endpoints_tested": 10,
          "endpoints_total": 571,
          "endpoints_total_is_lower_bound": true,
          "paid_calls": 12
        },
        "domain": "2s.io",
        "endpoints_to_skip": [
          {
            "endpoint": "GET /x402/v2/wallet-age-check",
            "receipt": "https://basescan.org/tx/0xe887d03d909addcc36f6613a36f1a8775555f7ca1f4fddd3d80e647850eff59c",
            "tested_at": "2026-09-09",
            "what_happened": "Paid and settled; the response did not meet the check registered before payment ({\"age\":0,\"date_ok\":false,\"old_enough\":false})."
          }
        ],
        "health": {
          "endpoints_problem": 0,
          "endpoints_unjudged": 0,
          "last_weekly_probe": {
            "answering_402": true,
            "date": "2026-10-05"
          },
          "safe_default": true,
          "still_answering_402": true,
          "surface_measured_on": "2026-09-21"
        },
        "priceQuotedAt": "2026-10-05",
        "priceUsd": 0.0025,
        "result": {
          "ok": 12,
          "problem": 0,
          "transport_only": 0
        },
        "surface": {
          "total": 571,
          "unit": "endpoint"
        },
        "tested": [
          {
            "description": "the seller's own description of THAT endpoint, with a pointer to where it came from",
            "endpoint": "POST /api/example",
            "note": "why that verdict, in one sentence",
            "pay": {
              "asset": "0x…",
              "network": "<caip-2>",
              "payTo": "0x…",
              "scheme": "exact"
            },
            "priceUsd": 0.001,
            "request": "<what we sent>",
            "response": "<what came back, in full unless it was too large to reproduce>",
            "result": "ok | problem | transport-only",
            "tx": "0x…",
            "txUrl": "https://basescan.org/tx/0x…"
          }
        ],
        "verdict": "verified"
      }
    ]
  }
}

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/53555.json for the price and payment options.
  3. Pay. Call GET https://402atlas.com/api/verified. 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, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price
$0.1 / request
Protocol
x402 v2
Auth
No account or API key. Pay per request.
Networks
Base
Demand
1 calls · 1 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

SchemeNetworkAssetAmountPay toTimeout
exactBase
eip155:8453
USDC$0.10x20dcca105275f53ad67e0576a5b99555bbe591e5300s
accepts[] (raw JSON)
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x20dcca105275f53ad67e0576a5b99555bbe591e5",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "100000",
    "amountUsd": 0.1,
    "maxTimeoutSeconds": 300
  }
]

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 "https://402atlas.com/api/verified"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://402atlas.com/api/verified");
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://402atlas.com/api/verified")
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
402atlas.com
Endpoint
https://402atlas.com/api/verified
Machine-readable
/resources/53555.json