{"slug":"scvd-store-api-buy-launch-check-4f7acb","title":"The Launch Check","host":"scvd.store","method":"GET","resource":"https://scvd.store/api/buy/launch_check","category":"commerce","description":"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","price_listed":5.0,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:137","eip155:42161","eip155:480","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"agent_name":"friendly-agent","url":"https://your-shop.example/api/buy/thing"},"type":"http"},"output_schema":{"$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 — 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"},"history":[],"description_full":"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,…","last_updated":"2026-09-19T14:13:45.725Z","schemes":["exact"]}