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SCVD General Store — Launch Check (x402 Conformance Audit)
x402
SCVD General Store — Launch Check (x402 Conformance Audit) is a paid API for AI agents from scvd.store, paid per call via x402, $5/call, status unknown (last checked 2026-10-27).
Performs a live x402 conformance check on a caller-supplied endpoint by making a real purchase attempt and returning a signed certificate with results.
Price / call$5
Success—
StatusUnknown
How this service works
The Launch Check. REQUIRES ?url= on the paid request — a signed request without it is refused before the gate and no money moves. A signed JSON walk record — verdict (settled, payment_refused, no_payment_gate, malformed_challenge, unpaid_by_rule or unreachable), every stage with its detail (approach, challenge, terms, screen, payment, settle, delivery), what this store paid and to whom, the settlement transaction where the seller returned one, the paying field wallet, dated,…
Output
A JSON object containing a signed ed25519 certificate (cert_id, date, item, patron_number), a badge SVG URL, a verification URL, the full conformance report as text in the 'deliverable' field, the USDC amount paid, and an optional tip amount. The certificate can be independently verified at the returned verify_url.
Example use cases
Pre-launch x402 endpoint audit
“Before I go live, can you run the SCVD Launch Check against my x402 endpoint at https://api.acmecorp.com/data and get me a signed certificate? Name it 'Acme Data Feed' on the cert.”
Conformance badge for API marketplace listing
“I'm listing my agent API on a marketplace and they want proof of x402 conformance — run a Launch Check on https://tools.myservice.io/analyze and put 'MyService Analytics' as the agent name so the badge matches.”
Debugging a broken 402 payment flow
“My x402 endpoint at https://dev.robotfactory.ai/endpoint seems to be rejecting payments incorrectly — can you run a live conformance probe against it through the SCVD store and show me what the signed report says?”
Technical details
Endpoint
GEThttps://scvd.store/api/buy/launch_check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need an authoritative, signed, third-party attestation that an x402 endpoint is conformant — especially before launching an API, listing on a marketplace, or providing proof-of-compliance to partners. It is the only endpoint that combines a live real-money probe with a Bitcoin-anchored signed certificate and a shareable badge. Prefer it over self-testing because the result is independently verifiable and patron-numbered.
Side effects
- Endpoint URL uses scvd.store's own hostname — refused by policy
- Endpoint URL is not HTTPS or uses a non-default port — rejected at input validation
- Target endpoint does not respond with a 402 before payment — conformance failure noted in deliverable
- Payment attempt exceeds the $0.05 cap at the target till — probe aborted
- Invalid URL format in the url query parameter — schema validation error
- Target endpoint unreachable or times out during probe — network error returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"item_id": "launch_check",
"message": "Pleasure doing business. Here's your goods, warm off the shelf.",
"tip_usdc": 0,
"badge_url": "https://scvd.store/badges/41.svg",
"paid_usdc": 5,
"signature": "<128 hex chars, ed25519>",
"verify_url": "https://scvd.store/api/verify/<your cert_id>",
"certificate": {
"date": "2026-07-22T15:04:05.000Z",
"item": "launch_check",
"cert_id": "<cert_ + 12 chars, minted when this purchase settles>",
"patron_number": 41
},
"deliverable": "<the The Launch Check itself, as text>",
"patron_number": 41
}
}Tags
x402
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