# x402 PipeCheck Diagnostics

> x402 PipeCheck Diagnostics is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-10).

Probes a public URL (or catalog endpoints) for x402 payment-gated API compliance, returning diagnostic JSON with eip3009 payment extras on unpaid requests.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/pipecheck?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-pipecheck-diagnostics-accecd5f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3etvzEHwkFlCi2Rz_8sXI

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402-pipecheck-diagnostics-accecd5f
```

Example prompt: Can you probe https://example.com/api/premium and check whether it's properly set up for x402 payment gating — specifically whether it returns the right HTTP 402 with eip3009 payment details?

## When to prefer this

Choose this endpoint when you need to verify, debug, or validate that a specific public URL correctly implements the x402 HTTP payment protocol, particularly checking for well-formed HTTP 402 responses with eip3009 payment authorization extras. It is specifically useful for developers building or auditing x402-gated APIs using the OpenX402 facilitator. Prefer this over generic HTTP testing tools when x402 protocol compliance and eip3009 metadata correctness are the primary concern.

## Known failure modes

- Non-public or unreachable URL returns connection error or timeout
- URL does not implement x402, returning unexpected status codes other than 402
- Facilitator mismatch — endpoint uses a facilitator other than OpenX402, resulting in incomplete or missing eip3009 metadata
- Malformed URL input causes 400 Bad Request
- Rate limiting or access restrictions on the target URL prevent probing

## How this service works

Paid x402 diagnostics. Unpaid paid-SKU requests return HTTP 402 with eip3009 extras. Facilitator: OpenX402 only.

## Output

Returns a JSON diagnostic report indicating whether the probed URL (or catalog endpoints) correctly implements x402 payment gating, including the HTTP 402 response details, eip3009 payment extras such as token address and authorization parameters, and overall compliance status. Unpaid requests intentionally trigger the 402 flow to surface the payment metadata for inspection.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "url": {
       "type": "string",
       "description": "Optional public URL to probe. Omit to scan catalog endpoints."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  },
  "inputSchema": {
   "type": "object",
   "required": [
    "type",
    "properties"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "object"
    },
    "required": {
     "type": "array",
     "items": {
      "type": "string"
     }
    },
    "properties": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "pipecheck",
  "url": "https://openclawproductions.com/api/v1/settleproof",
  "note": "Example paid Pipe Check JSON. Never invents a live 402.",
  "results": [
   {
    "url": "https://openclawproductions.com/api/v1/settleproof",
    "class": "http_402",
    "reason": "Example shape only. Live class comes from the paid probe."
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-pipecheck-diagnostics-accecd5f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from openclawproductions.com](https://www.zero.xyz/host/openclawproductions.com/llms.txt)