# OpenClaw x402 Replay Cass Diagnostics

> OpenClaw x402 Replay Cass Diagnostics is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.15/call, status unknown (last checked 2026-10-11).

Returns a paid x402 diagnostic JSON payload for the 'replaycass' SKU, demonstrating the HTTP 402 payment-gated API flow with eip3009 extras.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/replaycass?utm_source=zero.xyz
- Price: $0.15/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/openclaw-x402-replay-cass-diagnostics-ba441388
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MX82SRTnGPv7cehMGbwz2

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 openclaw-x402-replay-cass-diagnostics-ba441388
```

Example prompt: Run the replaycass x402 diagnostics endpoint and show me the paid JSON response — I want to confirm the eip3009 payment flow is working correctly with OpenX402 as the facilitator.

## When to prefer this

Use this endpoint when you need to test or demonstrate the x402 HTTP payment protocol, specifically the eip3009 authorization flow with OpenX402 as facilitator. It is a diagnostic/test SKU rather than a production data service — prefer it for integration testing, protocol validation, or exploring x402 payment-gated API mechanics with a live but low-cost ($0.15 USDC) example.

## Known failure modes

- HTTP 402 returned when no valid x402 payment header is provided, with eip3009 extras describing required payment
- Payment header malformed or wrong amount causes facilitator rejection
- OpenX402 facilitator unavailable returns service error
- Invalid 'properties' parameter may result in unexpected response shape

## 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 ('replaycass'), a diagnostic note explaining this is an example paid JSON shape, the price ('$0.15'), and the title ('Replay Cass'). Unpaid requests receive HTTP 402 with eip3009 payment extras instead.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "replaycass",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.15",
  "title": "Replay Cass"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/openclaw-x402-replay-cass-diagnostics-ba441388/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)