# x402-tools Quote Guard Diagnostics

> x402-tools Quote Guard Diagnostics 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 JSON diagnostic payload for the 'quotaguard' SKU via the x402 HTTP payment protocol, returning HTTP 402 with EIP-3009 payment details if unpaid.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/quotaguard?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-tools-quote-guard-diagnostics-c1b6d2d7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RiEwaFrALXu0_T6HPh4gA

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-quote-guard-diagnostics-c1b6d2d7
```

Example prompt: Run the x402-tools Quote Guard diagnostic to check that my x402 payment setup works — I want to see the paid JSON response for the quotaguard SKU at $0.18 USDC.

## When to prefer this

Choose this endpoint when you need to test or validate an x402 micropayment flow end-to-end, specifically using the OpenX402 facilitator and EIP-3009 payment authorization. It is ideal for developers building x402-aware agents who need a live sandbox-like paid endpoint to confirm their payment logic works before integrating with production services. Not suitable for non-x402 payment methods or general API quota management.

## Known failure modes

- HTTP 402 returned with EIP-3009 extras if payment not provided or invalid
- Payment token rejected by OpenX402 facilitator — check facilitator compatibility
- Malformed properties parameter may result in unexpected response
- Network timeout if OpenX402 facilitator is unreachable
- Non-x402-aware client may not handle 402 response correctly

## 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 ('quotaguard'), a diagnostic note, the price ('$0.18'), and the title ('Quote Guard'). If payment has not been made, returns HTTP 402 with EIP-3009 payment metadata including facilitator details for settlement via OpenX402.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-quote-guard-diagnostics-c1b6d2d7/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)