{"id":"opening_day","listed_week":"2026-W36","name":"The Opening Day","subtitle":"one launch check, seven days of conformance watch, and your passport page, at one URL","price_usdc":9,"pricing":"fixed","cadence":"term","term_days":7,"reads":"subject_purchase","fulfillment":"instant","description":"Name your x402 endpoint (the url query parameter) and three things happen under one certificate. First, the Launch Check: this store walks your door the way a paying stranger does — one real EIP-3009 authorization from our declared field wallet, presented at your till, settled or refused, every stage signed. Then the Conformance Watch: once a day for seven days the published preflight battery runs against the same door and signs that day's readout alone, our missed days counted against us. And your Endpoint Passport, the census's dated page for your host, linked from both. One URL serves all three, free to read forever, for a directory or a counterparty that wants more than your word. Bought apart these cost ten dollars and come as a receipt each. Not a badge, not a certification, not a guarantee your door stays up: one purchase attempt, seven daily looks, and a page that says when its reading goes stale.","sample_url":"https://scvd.store/samples/once-over.json","note_402":"Nine dollars for opening day: we buy from your till once, watch the door for a week, and put the passport beside both. Bought apart it is ten, and a receipt each.","constraints":["Give your x402 endpoint in the url query parameter: https, default port, on the public internet","The launch check is one real purchase attempt from the declared field wallet, once — never a retry loop","We pay at most $0.05 at your till; a costlier cheapest rail gets a signed record of exactly where the check stopped instead of a payment","The payTo is sanctions-screened before any payment, and no screen means no payment — the rule fails closed","The watch is one pass a day for seven days, each signed alone; it ends after seven days and never renews itself","We refuse our own hostname — a report about our own till, signed by us, would be the instrument vouching for itself","The bundle URL, the check URL and the watch history are free to read forever"],"buy_url":"https://scvd.store/api/buy/opening_day","task":"Open my x402 endpoint properly — one real purchase attempt, a week of signed daily checks, and my passport page, under one certificate at one URL","price_tiers_usdc":[9],"spec":{"capability":"The launch check's signed JSON walk record (verdict, every stage, what was paid, the settlement transaction where one came back), its evidence hash bound into the purchase certificate's attests field; a conformance watch opened on the same door for seven days, each daily pass signed alone at a history URL; the host's endpoint passport URL; and one bundle URL (/api/opening-day/{cert_id}) naming all three, free to read forever. Instant to open; the week fills in day by day and never renews itself.","why_use":"the merchant's opening day in one purchase: the launch check's real walk of your till, then seven daily signed conformance passes on the same door, then your passport page — one certificate, one URL a directory can read, all free to read forever, and cheaper than the parts bought apart.","inputs":{"properties":{"agent_name":{"type":"string","description":"Optional name to put on the certificate and patron badge, up to 80 characters."},"url":{"type":"string","format":"uri","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 (we pay at most $0.05 at your till), then seven daily signed conformance passes on the same door, then your passport page — one certificate, one URL. We refuse our own hostname."}},"required":["url"]},"outputs":{"delivery":"delivered in the purchase response, same request","always_included":["signed certificate (ed25519)","sequential patron number","badge_url","verify_url"]},"verification":{"verify_url":"https://scvd.store/api/verify/{id}","cost":"free, unlimited, forever","signing_key":"https://scvd.store/.well-known/scvd-signing-key","key_history":"https://scvd.store/.well-known/scvd-signing-key","sample_artifact_id":"cert_4dww28dx5j","sample_verify_url":"https://scvd.store/api/verify/cert_4dww28dx5j","certificate_binds":["cert_id","item","patron_number","date","paid_usdc","asset","network","payer","settlement_tx"],"certificate_binds_note":"All of these ride INSIDE the signed bytes, not beside them: paid_usdc is the total settled (not the tip), payer is the paying wallet — chain-verifiable, unlike a chosen name — and settlement_tx is the on-chain transaction, so this certificate and a Base explorer are the same fact checked twice. Any field shown but not signed is named as such in the verify response rather than left to be discovered.","rights":"https://scvd.store/rights","attestation":"Signed by the store's key, not yours: a claim the certificate carries can be checked by a third party without trusting your self-report."},"constraints":["Give your x402 endpoint in the url query parameter: https, default port, on the public internet","The launch check is one real purchase attempt from the declared field wallet, once — never a retry loop","We pay at most $0.05 at your till; a costlier cheapest rail gets a signed record of exactly where the check stopped instead of a payment","The payTo is sanctions-screened before any payment, and no screen means no payment — the rule fails closed","The watch is one pass a day for seven days, each signed alone; it ends after seven days and never renews itself","We refuse our own hostname — a report about our own till, signed by us, would be the instrument vouching for itself","The bundle URL, the check URL and the watch history are free to read forever"],"price":{"amount_usdc":9,"pricing":"fixed","tiers_usdc":[9],"currency":"USDC","network":"Base (eip155:8453)","protocol":"x402 v2"}},"what_you_can_use_it_for":"The case it was built for: open my x402 endpoint properly — one real purchase attempt, a week of signed daily checks, and my passport page, under one certificate at one URL. Nothing about the artifact restricts you to that. What you buy is yours — to read, quote, publish, or hand to somebody who does not trust us, which is the case it is actually built to survive: the verification is free forever for whoever you hand it to, needs no account, and does not route through this store. There is no use case we are reserving.","expected_outcome":"HTTP 200, the goods themselves, and an ed25519 certificate in the same response — no second call, no polling. The purchase covers a 7-day term as one payment; nothing renews it by itself, because there is no mechanism here that could. Every delivery carries a signed certificate, a sequential patron number, a badge URL and a verify URL that is free to call forever, by anyone, without asking us. The store delivers first and settles after: a delivery that fails takes no money at all, so there is nothing to refund and nothing to chase.","errors":[{"code":"payment_required","http":402,"means":"you have not paid yet. This is the door working, not a refusal: the response carries the x402 challenge with every accept you may sign against, and it carries no `code` field because it is not an error","what_to_do":"Read the PAYMENT-REQUIRED header (base64 JSON) or the body's accepts array, sign one, and call again with the payment attached. A 402 is never an error to retry unchanged.","charged":false,"code_on_the_wire":false},{"code":"target_refused","http":400,"means":"the URL you named is refused by this store's probe-target law (https, default port, no credentials, nothing private or internal) before any money moves","what_to_do":"Name a public https URL on its default port. This is a statement about US, never an observation about that host.","charged":false,"code_on_the_wire":true},{"code":"passport_refused","http":403,"means":"the door's own gate declined to issue for that subject","what_to_do":"Read the sentence beside it — it names the specific reason — and do not retry unchanged.","charged":false,"code_on_the_wire":true},{"code":"bad_request","http":400,"means":"a parameter is missing, malformed, or outside its stated bounds. The sentence names which one and what it wants","what_to_do":"Fix the named parameter and resend. Retrying unchanged fails identically and still costs nothing.","charged":false,"code_on_the_wire":true},{"code":"upstream_unavailable","http":503,"means":"something this purchase depends on did not answer, so the store refused to take money for work it could not do","what_to_do":"Retry later. Nothing was charged and no order was opened.","charged":false,"code_on_the_wire":true},{"code":"already_done","http":409,"means":"the thing you asked for already exists","what_to_do":"Read the existing record rather than buying a second copy of it.","charged":false,"code_on_the_wire":true},{"code":"retired","http":410,"means":"the item existed and was deliberately withdrawn. Gone on purpose, not missing — the body names the date, the reason, and the successor if one exists","what_to_do":"Read `folded_into` if present and buy that instead; otherwise re-read the menu. Certificates issued under the retired item verify forever: retirement changes the shelf, never the record.","charged":false,"code_on_the_wire":true},{"code":"unknown_item","http":404,"means":"no item by that id is on the shelf and none ever was. Distinguishable from `retired`, which is a 410 and carries a date","what_to_do":"Re-read the menu URL in the body. If you meant to ask for something this store does not sell, the request URL beside it is how you say so — a missing item is logged as market research rather than discarded.","charged":false,"code_on_the_wire":true},{"code":"sold_out","http":409,"means":"the week's stock is spent. An honest zero, not a queue: no order was created and nothing was reserved","what_to_do":"The body carries the waitlist URL. Do not retry the buy: a sold-out shelf refuses outright rather than taking money against stock that does not exist.","charged":false,"code_on_the_wire":true}],"security":{"what_this_does_in_your_name":"One unauthenticated outbound GET to the endpoint you name, and a real payment against it from this store's own field wallet — the strongest thing anything here does. Your money is not spent: the field wallet is ours, the cap is ours, and what you buy is the signed record of what happened when we walked your door for real. This store never asks for a credential, a key, or a wallet secret, and has no field that could hold one: payment is an x402 signature you produce, and we never see anything that could spend on your behalf.","what_it_stores_about_you":"The order — what was bought, when, the certificate minted for it, and a sequential patron number — because that record IS the artifact you paid for and the thing your verify URL resolves. An agent_name you supply is optional and appears on the certificate you asked for.","what_we_never_do":"No account, no cookie, no caller identifier, and no allocation of our budgets by IP — the buckets bound our cost rather than ranking callers, which is a trade we would rather state than hide. We do not sell, share or publish what any caller asked us about; the weekly census is a separate instrument that walks public discovery feeds, never this door's traffic.","standards":"Disclosure is private-first and symmetric: an operator hears from us before the public does, and the same rule binds us when the defect is ours. Corrections are dated and public, never silent edits. Every signed artifact verifies offline against a published key, so you never have to ask us whether a document of ours is real.","reporting":"https://scvd.store/.well-known/security.txt for a vulnerability, https://scvd.store/corrections for something we got wrong."},"guaranteed":["signature validity forever","verification free forever","price as displayed","delivery format as specified"],"not_guaranteed":["fitness for your particular task","future protocol compatibility beyond stated interfaces","human-labor turnaround faster than posted SLA"],"fulfillment_state":{"class":"instant","shutter":"open"},"markdown_note":"This same URL serves markdown when the Accept header prefers text/markdown."}