# x402-tools Listed Gate Diagnostics

> x402-tools Listed Gate Diagnostics is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-11).

Returns a paid x402 diagnostic JSON payload for the 'listedgate' SKU, demonstrating the HTTP 402 payment-gated API flow via OpenX402 facilitator.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/listedgate?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-tools-listed-gate-diagnostics-f96c6731
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Mvc4OfLoxvhBgMcLi2tEX

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-listed-gate-diagnostics-f96c6731
```

Example prompt: Run the x402 listedgate diagnostic for me — I want to confirm the paid JSON response comes back correctly after settling $0.02 USDC through OpenX402.

## When to prefer this

Choose this endpoint when you need to test, diagnose, or demonstrate the x402 HTTP payment-gating protocol with a real listed SKU backed by the OpenX402 facilitator. It is ideal for verifying that an agent's USDC micropayment flow (eip3009) is correctly formed before integrating with production x402 gates.

## Known failure modes

- HTTP 402 returned when no valid x402 payment header is included — response contains eip3009 payment details
- Payment settled outside OpenX402 facilitator results in rejected or unrecognized payment
- Malformed properties parameter may return 400 or unexpected shape
- Network timeout or service unavailability returns 5xx

## 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 ('listedgate'), a diagnostic note explaining this is an example paid shape, the price ('$0.02'), and a title ('Listed Gate'). Unpaid requests return 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": "listedgate",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.02",
  "title": "Listed Gate"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-listed-gate-diagnostics-f96c6731/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)