# x402 StablePulse Diagnostics Endpoint

> x402 StablePulse Diagnostics Endpoint is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.04/call, status unknown (last checked 2026-10-11).

Returns a paid diagnostic JSON response for testing x402 HTTP payment protocol flows, returning HTTP 402 with EIP-3009 payment details when unpaid.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/stablepulse?utm_source=zero.xyz
- Price: $0.04/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-stablepulse-diagnostics-endpoint-51bf964f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__0fxeFcLqCSK-f5tdV8iQ

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-stablepulse-diagnostics-endpoint-51bf964f
```

Example prompt: Hit the StablePulse x402 test endpoint to confirm the payment gating is working — I want to see the paid JSON response with the stablepulse SKU details after settling 0.04 USDC via OpenX402.

## When to prefer this

Use this endpoint specifically when you need to test or validate x402 HTTP payment protocol flows, EIP-3009 payment challenge parsing, or OpenX402 facilitator integration. It is a diagnostic tool, not a production data service — choose it when you need a real paid x402 endpoint to probe payment gating behavior with a minimal $0.04 USDC cost.

## Known failure modes

- HTTP 402 returned with EIP-3009 extras when no valid payment is included — expected behavior for unpaid requests
- Payment facilitator mismatch: only OpenX402 is accepted as facilitator; other facilitators will be rejected
- Malformed or missing USDC payment authorization results in 402 challenge loop
- Network timeout or endpoint unavailability returns no response

## 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 ('stablepulse'), a human-readable title ('Stable Pulse'), the price ('$0.04'), and a note confirming the paid response shape. If payment has not been settled, returns HTTP 402 with EIP-3009 payment challenge extras instead.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "stablepulse",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.04",
  "title": "Stable Pulse"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-stablepulse-diagnostics-endpoint-51bf964f/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)