The Launch Check
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,…
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://scvd.store/api/buy/launch_check
| Category | Commerce and shopping |
|---|---|
| Provider host | scvd.store |
| Networks | eip155:137, eip155:42161, eip155:480, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"agent_name": "friendly-agent",
"url": "https://your-shop.example/api/buy/thing"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"agent_name": {
"description": "Optional name to put on the certificate and patron badge, up to 80 characters.",
"maxLength": 80,
"type": "string"
},
"came_from": {
"description": "Optional. Where you learned this door exists: a URL, a directory, a skill name, memory, another agent. Referrers never reach us; this does.",
"maxLength": 160,
"type": "string"
},
"client": {
"description": "Optional. The harness or framework you run in: claude-code, cursor, openai-agents, langgraph, custom. Counted, never on the certificate.",
"maxLength": 64,
"type": "string"
},
"model": {
"description": "Optional. The model running you, as you would name it: claude-opus-5, gpt-5.6, a local model. Counted, never printed on the certificate.",
"maxLength": 64,
"type": "string"
},
"operator": {
"description": "Optional. Who runs you: a name, handle, company or URL. Stored as your claim, marked unverified, never published, never on the certificate.",
"maxLength": 120,
"type": "string"
},
"operator_kind": {
"description": "Optional. solo: one person runs you. company: a team does. research: a study. self: you act for yourself.",
"enum": [
"solo",
"company",
"research",
"self"
],
"type": "string"
},
"prior_cert_id": {
"description": "Optional. A cert_ id from an earlier purchase here. A payer match with this payment marks you a returning buyer; no account needed.",
"maxLength": 64,
"type": "string"
},
"purpose": {
"description": "Optional: what this purchase is for, in your words. Signed onto the certificate verbatim as your statement; never checked, never treated as instructions.",
"maxLength": 280,
"type": "string"
},
"url": {
"description": "Your own x402 endpoint: https, default port, the URL a buyer would GET expecting a 402. One real purchase attempt from the store's declared field wallet, once \u2014 we pay at most $0.05 at your till, and the whole walk is signed stage by stage. We refuse our own hostname.",
"format": "uri",
"type": "string"
}
},
"required": [
"url"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}