x402 validator

x402 validator: will Coinbase Bazaar list your x402 endpoint, and can a client pay it? Why will Coinbase not list your x402 endpoint, and can a standard client pay it? Pass ?url= (and &method=POST for a POST route). We read its 402 as a client does, check what Coinbase's facilitator and Bazaar enforce (accepts[0] network, the $0.001 minimum, descriptions over 500 characters, a bazaar schema that must describe info, query numbers typed as strings, routeTemplate, exposed headers), and ask…

Answeringour last check, 2026-09-27

1 of 1checks answered this week

559 msmedian answer time

$0.005listed price per call

$0.005price it asked us

Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.

Endpoint

GET https://apexfaucet.xyz/api/x402/x402-endpoint-doctor

Category	Everything else
Provider host	apexfaucet.xyz
Networks	eip155:5042, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
Payment schemes	exact
Self-reported calls, 30 days	4 from 1 payers (the provider's figure, not ours)

Our checks, last 30 days

Day	Result	HTTP	Asked	Time
2026-09-27	valid payment request	402	$0.005	559 ms

Example input (from the provider)

{
  "discoverable": true,
  "method": "GET",
  "queryParams": {
    "method": "GET",
    "url": "https://api.onesource.io/api/chain/erc20-balance"
  },
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "method": {
              "description": "Optional. A GET that answers 405 is re-checked as POST automatically.",
              "enum": [
                "GET",
                "POST"
              ],
              "type": "string"
            },
            "url": {
              "description": "The x402 endpoint to examine (public http/https URL).",
              "type": "string"
            }
          },
          "required": [
            "url"
          ],
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "queryParams"
      ],
      "type": "object"
    },
    "output": {
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

This page as JSON