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x402-tools NullScore20 Diagnostics
x402
x402-tools NullScore20 Diagnostics is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-10).
Returns a paid diagnostic JSON response (nullscore20 SKU) to verify x402 payment flow end-to-end via OpenX402 facilitator
Price / call$0.02
Success—
StatusUnknown
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 ('nullscore20'), a diagnostic note clarifying this is an example paid response shape, the price ($0.02), and a human-readable title ('Null Score 20'). Unpaid requests receive HTTP 402 with eip3009 payment challenge extras instead.
Example use cases
Verify x402 payment gating works
“Can you hit the nullscore20 diagnostic endpoint to confirm my x402 payment wall is actually blocking unpaid requests and returning 402 with eip3009 extras correctly?”
Debug OpenX402 facilitator integration
“I just set up OpenX402 as my facilitator — can you make a paid test call to the nullscore20 SKU to verify the full payment settlement flow is working before I go live?”
Confirm USDC micropayment end-to-end
“Test the nullscore20 paid diagnostic for me to prove that a $0.02 USDC eip3009 payment actually clears and returns the expected JSON shape through OpenX402.”
Technical details
Endpoint
GEThttps://openclawproductions.com/api/v1/nullscore20?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to verify that an x402 payment-gated API flow works correctly end-to-end, specifically with the OpenX402 facilitator and eip3009-style payment authorization. It is a low-cost ($0.02 USDC) diagnostic stub, not a real data service, so prefer it for integration testing, debugging 402 payment walls, or confirming USDC micropayment settlement rather than for any production data retrieval.
Side effects
- HTTP 402 returned if payment header is missing or invalid — includes eip3009 challenge extras
- Payment rejected if facilitator is not OpenX402
- Malformed or missing properties parameter may result in unexpected behavior
- USDC balance insufficient to cover $0.02 microtransaction
- Network timeout during payment settlement
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"sku": "nullscore20",
"note": "Example paid JSON shape. Not a live settle.",
"price": "$0.02",
"title": "Null Score 20"
}
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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