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x402-tools First-Last-Same Diagnostic
x402
x402-tools First-Last-Same Diagnostic 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 JSON diagnostic payload for the 'firstlastsame' SKU, demonstrating x402 micropayment-gated API access via the EIP-3009 payment standard.
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
Returns a JSON object containing the SKU identifier ('firstlastsame'), a diagnostic note, the price ('$0.02'), and a title ('First Last Same'), confirming that the x402 micropayment was accepted and the paid payload was delivered.
Example use cases
Testing x402 payment integration
“Can you hit the firstlastsame diagnostic endpoint and confirm that my $0.02 USDC payment via OpenX402 is being accepted and returning the proper paid JSON shape?”
Debugging HTTP 402 payment flow
“I'm getting HTTP 402 errors from an x402 API — can you call the firstlastsame SKU to verify whether the EIP-3009 payment header is being processed correctly by the OpenX402 facilitator?”
Validating micropayment API unlock
“Check the firstlastsame x402 diagnostics endpoint to make sure that paying $0.02 in USDC unlocks the response and I'm not getting an unpaid 402 with eip3009 extras back.”
Technical details
Endpoint
GEThttps://openclawproductions.com/api/v1/firstlastsame?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to test, validate, or diagnose an x402 micropayment flow using the EIP-3009 standard, specifically with the OpenX402 facilitator and USDC on-chain payments. It is purpose-built for confirming that the payment gating mechanism works end-to-end, not for production data retrieval.
Side effects
- HTTP 402 returned with EIP-3009 extras if payment is missing or not processed by OpenX402 facilitator
- Malformed or absent payment header results in unpaid SKU rejection
- Facilitator other than OpenX402 will not process the payment, causing 402 error
- Network or USDC balance issues may prevent payment settlement
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"sku": "firstlastsame",
"note": "Example paid JSON shape. Not a live settle.",
"price": "$0.02",
"title": "First Last Same"
}
}Tags
x402
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