x402 developer tool
x402 developer tool. Use to find out whether an x402 seller is listed in Coinbase CDP Bazaar and, if not, why. GET with required url (host or https URL). Reads CDP discovery and the host's /.well-known/x402, then sends one unpaid request per route; never pays. Returns JSON: verdict, per-route indexed status and networks (Base, Solana), and fail/warn findings each with a fix line. https only; private targets blocked. Errors are not charged.
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://horizonpulse.dev/api/bazaar-check
| Category | Code and developer |
|---|---|
| Provider host | horizonpulse.dev |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"url": "horizonpulse.dev"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"url": {
"description": "Seller host (e.g. example.com) or https URL (required). A URL path is also probed as a route. https only; private/localhost blocked.",
"type": "string"
}
},
"required": [
"url"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"description": "Horizon Pulse CDP Bazaar index check with lint findings. The example is a trimmed real response recorded from GET /api/demo/bazaar-check at 2026-10-09T16:38Z UTC; live values differ on every call.",
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}