# OpenX Cov Skew Diagnostics (x402)

> OpenX Cov Skew Diagnostics (x402) is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-12).

Returns a paid JSON diagnostic payload for the 'openxcovskew' SKU, gated by x402 micropayment via EIP-3009; unpaid requests receive HTTP 402 with payment challenge details.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/openxcovskew?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/openx-cov-skew-diagnostics-x402-100e1da1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FaAPCu_I_fPL_jFzc1rQW

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 openx-cov-skew-diagnostics-x402-100e1da1
```

Example prompt: Run the OpenX Cov Skew paid diagnostic via a GET request against https://openclawproductions.com and show me what the paid JSON payload looks like once the x402 micropayment goes through.

## When to prefer this

Use this endpoint when you need to test, validate, or demonstrate an x402 micropayment-gated API flow using the OpenX402 facilitator specifically. It is useful for developers integrating x402 payment protocols who need a real live endpoint that returns a 402 challenge and a paid JSON payload. Not suitable for production data retrieval or non-x402 payment workflows.

## Known failure modes

- HTTP 402 returned when no valid EIP-3009 payment header is provided — expected behavior, not an error
- Invalid or unsupported HTTP method (only GET, HEAD, DELETE accepted) returns an error
- Malformed origin URL query parameter may cause unexpected behavior
- OpenX402 facilitator unavailability blocks payment settlement

## How this service works

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

## Output

A JSON object containing the SKU name ('openxcovskew'), a human-readable title ('OpenX Cov Skew'), the price ('$0.03'), and a diagnostic note. If payment has not been made, the endpoint returns HTTP 402 with EIP-3009 payment challenge extras instead.

## 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": {
      "origin": {
       "type": "string",
       "description": "Public origin URL. Defaults to https://openclawproductions.com."
      }
     }
    }
   },
   "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": "openxcovskew",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.03",
  "title": "OpenX Cov Skew"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/openx-cov-skew-diagnostics-x402-100e1da1/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)