# x402-tools Sample Miss Diagnostics Endpoint

> x402-tools Sample Miss Diagnostics Endpoint 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).

Returns a paid diagnostic JSON sample for the 'samplemiss' SKU, demonstrating x402 HTTP 402 payment-gating with eip3009 extras via the OpenX402 facilitator.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/samplemiss?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-tools-sample-miss-diagnostics-endpoint-a9e670c6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QMRT3r6jp2LoIu0VtLU86

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-tools-sample-miss-diagnostics-endpoint-a9e670c6
```

Example prompt: Run the x402 samplemiss diagnostic endpoint using a GET request against my origin https://openclawproductions.com and show me the paid JSON shape it returns after the $0.02 USDC payment clears through OpenX402.

## When to prefer this

Choose this endpoint when you need to test, validate, or demonstrate x402 HTTP payment-gating behavior specifically with the OpenX402 facilitator and the samplemiss SKU. It is ideal for developers integrating x402 protocol support, verifying eip3009 payment challenge extras, or confirming the JSON response shape of a paid diagnostic endpoint without building a full production integration.

## Known failure modes

- HTTP 402 returned with eip3009 extras if payment has not been submitted or is invalid
- Request rejected if a facilitator other than OpenX402 is used
- Invalid HTTP method (non-GET/HEAD/DELETE) results in a method-not-allowed error
- Malformed origin URL query parameter may cause unexpected routing or default fallback to https://openclawproductions.com

## 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 identifier ('samplemiss'), a descriptive note, the price ('$0.02'), and the title ('Sample Miss'). This represents the canonical paid response shape for this diagnostic endpoint after successful x402 payment settlement.

## 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": "samplemiss",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.02",
  "title": "Sample Miss"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-sample-miss-diagnostics-endpoint-a9e670c6/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)