# x402 Bench Card Diagnostics Endpoint

> x402 Bench Card Diagnostics Endpoint is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.2/call, status unknown (last checked 2026-10-02).

Returns a paid JSON diagnostic payload (bench card) to validate x402 micropayment flow and EIP-3009 payment handling via OpenX402 facilitator

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/benchcard?utm_source=zero.xyz
- Price: $0.2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-bench-card-diagnostics-endpoint-81a9ef21
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AZpxtoiizUNHPiqTnWHcp

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-bench-card-diagnostics-endpoint-81a9ef21
```

Example prompt: Run the x402 bench card diagnostic against the OpenX402 facilitator — I want to confirm my EIP-3009 USDC micropayment flow is working end to end and see the paid JSON response come back cleanly.

## When to prefer this

Use this endpoint when you need to validate that an x402 micropayment pipeline — specifically using the OpenX402 facilitator and EIP-3009 USDC authorization — is functioning correctly. Ideal for agent developers testing wallet integrations, debugging 402 payment flows, or confirming end-to-end USDC micropayment compliance before deploying to production paid endpoints.

## Known failure modes

- HTTP 402 returned with EIP-3009 extras when no valid payment header is provided
- Payment rejected if facilitator is not OpenX402
- Invalid or expired EIP-3009 authorization token causes payment failure
- Network timeout if OpenX402 facilitator is unreachable
- Malformed response if payment is partially processed

## 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: sku (identifier 'benchcard'), note (diagnostic description), price ('$0.20'), and title ('Bench Card'). This confirms a successful x402 micropayment was processed via the OpenX402 facilitator and EIP-3009 authorization was accepted.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "benchcard",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.20",
  "title": "Bench Card"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-bench-card-diagnostics-endpoint-81a9ef21/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)