Fetch a public API origin and audit x402 discovery, OpenAPI, pricing, llms.txt,
Fetch a public API origin and audit x402 discovery, OpenAPI, pricing, llms.txt, robots, sitemap, MCP metadata, health, endpoint counts, payment schemes, and buyer-readiness signals. This deterministic endpoint does not call an upstream model. GET variant for agents, crawlers, and wallets that prefer query parameters over a JSON body. Pay up to $0.001 per request with x402 USDC on Base.
Asked 2.0x its listed price for its own exampleour last check, 2026-09-24
1 of 1checks answered this week
384 msmedian answer time
$0.001listed price per call
$0.002price 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://gpt55.558686.xyz/v1/tools/x402-site-audit
| Category | Code and developer |
|---|---|
| Provider host | gpt55.558686.xyz |
| Networks | eip155:8453 |
| Payment schemes | exact, upto |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.002 | 384 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"url": "https://example.com"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"anyOf": [
{
"required": [
"url"
]
},
{
"required": [
"base_url"
]
}
],
"properties": {
"base_url": {
"maxLength": 2048,
"minLength": 1,
"type": "string"
},
"include_optional": {
"type": "boolean"
},
"max_bytes": {
"maximum": 1048576,
"minimum": 4096,
"type": "integer"
},
"timeout_ms": {
"maximum": 10000,
"minimum": 1000,
"type": "integer"
},
"url": {
"maxLength": 2048,
"minLength": 1,
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": true,
"properties": {
"fetchedAt": {
"type": "string"
},
"ok": {
"type": "boolean"
},
"tool": {
"type": "string"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}