# x402-tools Receipt Chain Diagnostics

> x402-tools Receipt Chain Diagnostics is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.22/call, status unknown (last checked 2026-10-12).

Returns a paid diagnostic JSON payload demonstrating the x402 HTTP payment protocol flow, including eip3009 payment extras, for the 'receiptchain' SKU.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/receiptchain?utm_source=zero.xyz
- Price: $0.22/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-receipt-chain-diagnostics-8fa1a062
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-n2CQ4u3FmOqhc7enGY7X

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-receipt-chain-diagnostics-8fa1a062
```

Example prompt: Run the x402 receiptchain diagnostic so I can confirm that my eip3009 payment goes through and I get back the paid JSON payload from OpenX402.

## When to prefer this

Use this endpoint when you need to test, debug, or demonstrate the x402 HTTP payment protocol flow with eip3009 payment authorization extras. It is specifically useful for developers integrating paid API access via USDC micropayments who want to verify that the payment gate clears correctly using the OpenX402 facilitator. Not suitable for production data retrieval or non-diagnostic use cases.

## Known failure modes

- HTTP 402 returned with eip3009 extras if payment is not included or invalid
- Payment facilitator not recognized (only OpenX402 is supported)
- Malformed properties parameter returns an error
- Network timeout or service unavailability
- Incorrect USDC payment amount causes rejection

## 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 ('receiptchain'), a descriptive note indicating example paid JSON shape, the price ($0.22), and a title ('Receipt Chain'). This confirms that payment was accepted and the x402 paid gate was cleared successfully.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "receiptchain",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.22",
  "title": "Receipt Chain"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-receipt-chain-diagnostics-8fa1a062/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)