# x402-tools StubShare41 Diagnostic Endpoint

> x402-tools StubShare41 Diagnostic Endpoint is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-12).

Returns a paid example JSON stub (SKU stubshare41) to test x402 micropayment flow and EIP-3009 payment mechanics via OpenX402 facilitator.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/stubshare41?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-tools-stubshare41-diagnostic-endpoint-e27de6a1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_E10dNxfzmypuVS4ieoF5t

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-stubshare41-diagnostic-endpoint-e27de6a1
```

Example prompt: Run a diagnostic call against the x402 stubshare41 paid endpoint to confirm my EIP-3009 payment authorization and OpenX402 facilitator setup are working correctly.

## When to prefer this

Use this endpoint when you need to test or debug an x402 micropayment integration end-to-end, specifically targeting the OpenX402 facilitator with EIP-3009 authorization. It is a known stub with predictable output, making it ideal for smoke tests, CI checks, and client library validation. Prefer this over live production endpoints when you only need to confirm payment flow mechanics rather than real data.

## Known failure modes

- HTTP 402 returned if no valid EIP-3009 payment authorization is included — response includes payment requirement extras
- Payment authorization invalid or expired — facilitator rejects and returns 402
- OpenX402 facilitator unreachable — connection timeout or 503
- Malformed properties parameter — may return 400 or unexpected response
- Insufficient USDC balance — payment cannot be processed by facilitator

## 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 ('stubshare41'), a descriptive note confirming this is an example paid shape, the price ('$0.02'), and the title ('Stub Share 41'). On unpaid requests, returns HTTP 402 with EIP-3009 payment extras specifying how to authorize payment.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "stubshare41",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.02",
  "title": "Stub Share 41"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-stubshare41-diagnostic-endpoint-e27de6a1/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)