# x402-tools WWW Match 221 Diagnostic

> x402-tools WWW Match 221 Diagnostic is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-14).

Returns a paid diagnostic JSON response for SKU wwwmatch221, demonstrating the x402 HTTP payment protocol with eip3009 extras on unpaid requests.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/wwwmatch221?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-tools-www-match-221-diagnostic-38122590
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JYNMLR3zQGHtoeYra5cMt

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-www-match-221-diagnostic-38122590
```

Example prompt: Run the x402 diagnostic for SKU wwwmatch221 on OpenX402 and show me the paid JSON response including the SKU name, price, and title fields.

## When to prefer this

Choose this endpoint when you need to test, validate, or demonstrate the x402 HTTP payment protocol specifically with the OpenX402 facilitator and eip3009 payment authorization. It is purpose-built for x402 integration diagnostics rather than delivering real business data, making it ideal for developers probing micropayment flows or verifying that their x402-capable agent can handle 402 challenges and settle $0.02 USDC payments correctly.

## Known failure modes

- HTTP 402 returned when no valid x402 payment header is provided — includes eip3009 extras with payment instructions
- Invalid or missing 'properties' parameter may result in malformed request
- Facilitator unavailability (OpenX402 down) may prevent payment settlement and block access
- SKU not found if endpoint path is incorrect

## 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 ('wwwmatch221'), a diagnostic note, the price ('$0.02'), and the title ('Www Match 221'). If the request is unpaid, the endpoint returns HTTP 402 with eip3009 payment-required extras specifying how to authorize the $0.02 USDC charge via the OpenX402 facilitator.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "wwwmatch221",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.02",
  "title": "Www Match 221"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-www-match-221-diagnostic-38122590/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)