# x402 Scope Voucher Diagnostic

> x402 Scope Voucher Diagnostic is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.18/call, status unknown (last checked 2026-10-10).

Returns a paid diagnostic JSON payload (scope voucher) via the x402 HTTP payment protocol, gated behind a $0.18 USDC micropayment using EIP-3009.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/scopevoucher?utm_source=zero.xyz
- Price: $0.18/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-scope-voucher-diagnostic-6938548a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Xuo2vRW9FkrQo4Qd9jiG1

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-scope-voucher-diagnostic-6938548a
```

Example prompt: Run the x402 scope voucher diagnostic on OpenX402 — I want to confirm my EIP-3009 payment authorization works and see the paid JSON response come back correctly.

## When to prefer this

Use this endpoint when you need to test or demonstrate the x402 HTTP payment protocol with EIP-3009/USDC micropayments, specifically against the OpenX402 facilitator. It is the right choice for developers validating their x402 client implementation, confirming payment gating behavior, or debugging 402 responses in a controlled diagnostic context.

## Known failure modes

- HTTP 402 returned with EIP-3009 payment details if no valid payment is attached
- Invalid or malformed EIP-3009 signature results in payment rejection
- OpenX402 facilitator unavailable causes endpoint to be unreachable
- Incorrect USDC amount causes payment validation failure
- Request without required payment header returns 402 before any content is served

## 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 ('scopevoucher'), a diagnostic note, the price ($0.18), and a title ('Scope Voucher'), confirming successful payment processing through the x402 protocol and OpenX402 facilitator.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "scopevoucher",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.18",
  "title": "Scope Voucher"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-scope-voucher-diagnostic-6938548a/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)