Audit any public x402 endpoint
Audit any public x402 endpoint: one unpaid probe → 402 validity, x402 version, decoded price/network/asset, payTo type (EOA vs contract), discovery-metadata hints, pass/warn/fail checks; SSRF-safe; never pays
Answeringour last check, 2026-10-01
1 of 1checks answered this week
249 msmedian answer time
$0.01listed price per call
$0.01price 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://horizonpulse.dev/api/x402-check
| Category | Code and developer |
|---|---|
| Provider host | horizonpulse.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-01 | valid payment request | 402 | $0.01 | 249 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"method": "GET",
"url": "https://horizonpulse.dev/api/pulse"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
"body": {
"description": "Optional JSON body (<=8KB, URL-encoded) sent with a POST probe, for endpoints that validate input before returning 402. Implies POST.",
"type": "string"
},
"method": {
"description": "HTTP method for the unpaid probe: GET (default; one POST retry on 405) or POST.",
"type": "string"
},
"url": {
"description": "Absolute http(s) URL of the x402 endpoint to audit (required). 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 x402 endpoint audit report",
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}