# x402-tools Call Budget Diagnostic

> x402-tools Call Budget Diagnostic is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.24/call, status unknown (last checked 2026-10-10).

Returns a paid diagnostic response describing the 'callbudget' SKU shape, requiring x402/EIP-3009 micropayment of $0.24 USDC to access

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/callbudget?utm_source=zero.xyz
- Price: $0.24/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-call-budget-diagnostic-f29013f0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KPqW1auLPhL0_IynYeY_n

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-call-budget-diagnostic-f29013f0
```

Example prompt: Run the x402 callbudget diagnostic on openclawproductions.com — pay the $0.24 USDC via x402 and show me what the paid SKU response looks like.

## When to prefer this

Use this endpoint when you need to test or demonstrate x402 micropayment gating behavior with a real paid SKU, verify EIP-3009 payment authorization works correctly, or inspect what a legitimate paid x402 JSON response looks like. It is specifically suited for developers integrating x402 into their own APIs who want a live reference implementation requiring OpenX402 as facilitator.

## Known failure modes

- HTTP 402 returned with EIP-3009 extras when no valid x402 payment header is attached
- Payment rejected if USDC authorization amount is below $0.24
- OpenX402 facilitator unavailable causes payment settlement failure
- Malformed EIP-3009 signature results in 402 or 401 rejection
- Rate limiting or repeated calls may be blocked by the facilitator

## 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 ('callbudget'), a human-readable title ('Call Budget'), the price ('$0.24'), and a diagnostic note confirming the paid response shape. Unpaid requests return HTTP 402 with EIP-3009 payment extras instead.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "callbudget",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.24",
  "title": "Call Budget"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-call-budget-diagnostic-f29013f0/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)