# x402-tools Pub Score Null Diagnostic

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

Returns a paid diagnostic JSON response for the 'pubscorenull' SKU, demonstrating x402 HTTP 402 payment flow with eip3009 extras via OpenX402 facilitator.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/pubscorenull?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-pub-score-null-diagnostic-64835c90
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OAZkQ4mm-9eJHsOgAbR2A

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-pub-score-null-diagnostic-64835c90
```

Example prompt: Can you call the pubscorenull diagnostic on openclawproductions.com and show me what a paid x402 JSON response looks like, including the SKU title and price fields?

## When to prefer this

Use this endpoint when you need to test or demonstrate the x402 HTTP 402 payment protocol flow, specifically with the OpenX402 facilitator and eip3009 payment extras. Prefer this for diagnosing paid SKU behavior, validating payment gating, or confirming the shape of a paid JSON response in a development or integration context.

## Known failure modes

- HTTP 402 returned if payment header is missing or invalid — includes eip3009 extras for payment negotiation
- Facilitator other than OpenX402 will be rejected
- Malformed properties input may result in unexpected behavior
- Network timeout if facilitator settlement is slow

## 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 ('pubscorenull'), a descriptive note, the price ('$0.02'), and a title ('Pub Score Null'). If payment is not provided, the endpoint returns HTTP 402 with eip3009 payment challenge extras.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "pubscorenull",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.02",
  "title": "Pub Score Null"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-pub-score-null-diagnostic-64835c90/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)