# x402-tools Stub Hold 41 Paid Diagnostic

> x402-tools Stub Hold 41 Paid 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 stub (SKU stubhold41) via HTTP GET, gated by x402 micropayment of $0.02 USDC using EIP-3009; unpaid requests receive HTTP 402 with payment challenge details.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/stubhold41?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-stub-hold-41-paid-diagnostic-49fb3839
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_s_1ZaqPYyi9enbMvdBRdC

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-stub-hold-41-paid-diagnostic-49fb3839
```

Example prompt: Run the x402 stub diagnostic for SKU stubhold41 — I want to confirm my EIP-3009 payment authorization is working and see what the paid JSON response looks like after settling the $0.02 USDC fee.

## When to prefer this

Choose this endpoint when you need to test or validate an x402 micropayment integration end-to-end against a live paid SKU, specifically with the OpenX402 facilitator and EIP-3009 authorization. It is a diagnostic stub, not a production data service, so prefer it for protocol verification and developer debugging rather than real data retrieval.

## Known failure modes

- HTTP 402 returned when no valid x402 payment header is provided — expected behavior, includes eip3009 payment challenge extras
- Invalid EIP-3009 authorization causes facilitator rejection before response is served
- OpenX402 facilitator unavailable results in gateway error
- Malformed properties parameter may be ignored silently as schema is loosely typed

## How this service works

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

## Output

On successful payment: a JSON object with fields sku ('stubhold41'), note (example paid shape description), price ('$0.02'), and title ('Stub Hold 41'). On missing or invalid payment: HTTP 402 with EIP-3009 payment challenge extras specifying how to authorize the micropayment.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "stubhold41",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.02",
  "title": "Stub Hold 41"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-stub-hold-41-paid-diagnostic-49fb3839/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)