{"@context":"https://schema.org","@type":"Collection","name":"The atlas — every door, what it costs, and what it is for","url":"https://scvd.store/atlas.json","description":"One fetch that answers 'I want to do X — what do I call, does it cost anything, and what comes back?'. The sitemap lists URLs and says nothing about them; the menu lists what is for sale and nothing that is free; the guide is prose you must read through. This is arranged by the goal a reader arrives with.","status":"EXPERIMENTAL, and published as one. Nobody we know of serves this shape, so it may turn out agents ignore it and the guide index was always enough. Fetches of this file are counted on the porch like every other surface, so that question gets a number rather than an opinion.","how_to_read":"start_here maps a goal to the calls that answer it — read that first. journeys are multi-step flows with the cost of each step stated before you commit. doors is the flat roster: free instruments, then everything on the paid shelf with its price, then the published datasets. Everything here is free to read and nothing on this page asks for a key.","start_here":[{"goal":"I am about to pay an x402 endpoint and want to know if it will work","call":["POST /api/preflight/v2"],"note":"Free, no account. Checks the door's challenge shape and whether its payTo can actually be credited. It does NOT buy anything, so it cannot tell you the goods arrive — nothing that costs you nothing can."},{"goal":"I have a URL and a wallet and want everything you hold about that door before I decide","call":["POST /api/look/v1"],"note":"Free, no account. One live probe (the preflight's own) folded with the signed history of the host: rounds probed out of rounds since first sighting, the tier with its fraction, the last round's failed checks, the catalog's agreement. It never says whether to pay; it puts both halves on the table with their denominators."},{"goal":"Somebody handed me a signed offer or receipt and I do not trust it","call":["POST /api/conformance/v1"],"note":"Free, and it checks anyone's artifacts including our competitors' and our own. Structure, signature and time — never whether the price is fair or the seller is honest."},{"goal":"I want to check something THIS store signed, without trusting this store","call":["GET /api/verify/{id}"],"note":"Serves the exact bytes a signature covers so you can verify offline with your own library. Free forever, whether or not you bought the thing."},{"goal":"I want to know what the x402 market actually looks like","call":["GET /registry","GET /inflows","GET /corpus.json"],"note":"Registry is what the listings are worth; inflows is what arrived at the addresses they advertise; the corpus is the signed weekly record behind both. All free, all JSON via Accept, none of them a score on anybody."},{"goal":"I want to buy something and I have never used x402","call":["GET /try","GET /menu.json"],"note":"/try is a live practice till that settles real money at a price designed not to matter. Learn the flow there before spending on anything you need."},{"goal":"I want to watch one endpoint over time rather than check it once","call":["GET /menu.json"],"note":"The standing watch is paid, because it costs us a week of probes. One check is free at preflight; the watch is the thing a single check cannot be."},{"goal":"I run an x402 door and want to know what is free and what is for sale, in the order a launch happens","call":["GET /operators"],"note":"Free, no account. The shelf from the seller's side: four moments from before launch to when something goes wrong, the free instrument named first in each, every price read off the shelf when served. Nothing there ranks, scores or certifies a door."},{"goal":"I think this store published something wrong","call":["GET /corrections"],"note":"Every claim we got wrong, dated, with what changed. If yours is not there, the issue templates in the repo are the way in."}],"journeys":[{"name":"Pay an endpoint you have never paid before","when":"You have a URL that returns 402 and you do not know if it settles.","steps":[{"do":"Check the door's shape and whether its payTo can be credited","endpoint":"/api/preflight/v2","method":"POST","cost":"free","expect":"A verdict plus named advisories. A pass means the shape is right, never that goods arrive."},{"do":"If it serves signed offers, check one","endpoint":"/api/conformance/v1","method":"POST","cost":"free","expect":"Structure, signature and time. A conforming offer is still only a promise."},{"do":"Practise the payment flow somewhere it does not matter","endpoint":"/try","method":"GET","cost":"the cheapest thing on the shelf","expect":"A real settlement on a real rail, small enough to be a rounding error."},{"do":"Pay the endpoint you came for","cost":"theirs","expect":"Nothing this store can promise. We observe; we do not guarantee anybody's delivery."}]},{"name":"Decide whether to trust an artifact somebody sent you","when":"You are holding a signed offer or receipt from a stranger.","steps":[{"do":"Verify it at the free desk","endpoint":"/api/conformance/v1","method":"POST","cost":"free","expect":"A verdict naming defects from a published vocabulary."},{"do":"Look the defect up rather than guessing what it means","endpoint":"/defects.json","method":"GET","cost":"free","expect":"The named class, in words separate tools can share."},{"do":"Check the issuer's history if the artifact is ours","endpoint":"/api/verify/{id}","method":"GET","cost":"free","expect":"The exact signed bytes, checkable offline without us."}]}],"doors":{"free":[{"path":"/api/preflight/v2","name":"Preflight","access":"free","method":"POST","purpose":"Check any x402 door's challenge shape and whether its payTo can be credited.","caution":"Shape and receivability, not delivery. A pass is not a promise the goods arrive.","url":"https://scvd.store/api/preflight/v2"},{"path":"/api/before-you-pay/v1","name":"Before you pay","access":"free","method":"POST","purpose":"Replay the stock x402 client's own selection logic over a door's challenge: which accept YOUR client would sign, or why it would refuse locally before signing anything.","caution":"A fact about your configuration, not about the door. It walks selection, never settlement — nothing is signed and no wallet is touched.","url":"https://scvd.store/api/before-you-pay/v1"},{"path":"/api/look/v1","name":"The look","access":"free","method":"POST","purpose":"What this store holds about one x402 door: one live probe folded with the signed chain's history of the host, counts with their denominators, the tier with its fraction.","caution":"Not a score and not a safety threshold. Two kinds of fact kept apart; whether they add up to paying is the reader's line to draw.","url":"https://scvd.store/api/look/v1"},{"path":"/api/conformance/v1","name":"The conformance desk","access":"free","method":"POST","purpose":"Check any issuer's signed offers and receipts — competitors' and our own included.","caution":"Structure, signature and time only. Never a judgement about price or honesty.","url":"https://scvd.store/api/conformance/v1"},{"path":"/api/verify/{id}","name":"Verify anything we signed","access":"free","method":"GET","purpose":"Serves the exact bytes a signature covers, so you can check it offline with your own library.","caution":"Free whether or not you bought the thing. Do not trust this endpoint; run the file.","url":"https://scvd.store/api/verify/{id}"},{"path":"/operators","name":"For operators","access":"free","method":"GET","purpose":"The shelf from the seller's side, in the order a launch happens: free first in every stage, every price read off the shelf.","caution":"A reading order, not a recommendation to buy. Nothing there scores or certifies a door.","url":"https://scvd.store/operators"},{"path":"/mcp/verifier","name":"The verifier (MCP, read-only tools only)","access":"free","method":"POST","purpose":"A second MCP door serving read-only tools and nothing paid, each named here: preflight_x402_endpoint, verify_x402_receipt, lookup_endpoint_readiness, get_defect_definition, verify_scvd_artifact. The same handlers as /mcp under task-shaped names, for a client that should never see a shelf.","caution":"Evidence, never a judgment. Nothing here sells; the paid instruments are on /mcp and the x402 doors.","url":"https://scvd.store/mcp/verifier"},{"path":"/a2a","name":"The evidence agent (A2A)","access":"free","method":"POST","purpose":"Hand this store a task the A2A way: message/send with { task, …input } for preflight_endpoint, verify_receipt or get_endpoint_readiness; one bounded artifact back. The card is at /.well-known/agent-card.json.","caution":"Evidence, never a judgment: it does not say whether to pay, which door to use, or whether a merchant can be trusted. Read-only and free; the paid instruments stay x402 doors.","url":"https://scvd.store/a2a"},{"path":"/corpus/month","name":"The state of x402, by month","access":"free","method":"GET","purpose":"The corpus by calendar month: doors named, probed, payable and not at month end, door-weeks across the rounds, defects by name, the month before beside it. A stable address per month to cite.","caution":"Closing-week counts and door-week totals are two kinds of number and are never divided into a share. No host is named; nothing is ranked.","url":"https://scvd.store/corpus/month"},{"path":"/feeds","name":"Feeds","access":"free","method":"GET","purpose":"Four Atom feeds derived from the record: the week's doors, the corpus chain, the corrections, the disagreements. Poll them instead of the pages.","caution":"Entries are pointers with summaries; the derivation and the denominator are on the linked page. Never a ranking.","url":"https://scvd.store/feeds"},{"path":"/try","name":"The practice till","access":"free","method":"GET","purpose":"A live x402 door for learning the flow against real settlement.","caution":"It settles real money. Cheap on purpose, not free.","url":"https://scvd.store/try"}],"paid":[{"id":"spot_check","name":"Spot Check","access":"paid","price_usdc":0.001,"pricing":"fixed","fulfillment":"instant","purpose":"Name a host and get what this observatory already holds on it, signed: corpus rounds and verdicts as recorded, when we last actually knocked, our coverage of the window since we met it, and the gaps with their reasons. Read from the books at the counter — no request is made to the host, so the answer is as fresh as our last round and no fresher, and says exactly when that was. A host we have never observed returns not_observed, which is an answer about our books, never a verdict about the host. The same facts serve free at /corpus/host/{host}.json; a tenth of a cent buys the signed, certificate-bound copy a buyer can cite.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/spot_check","listing_url":"https://scvd.store/menu/spot_check","when":[{"job":"I am about to pay an endpoint I have never used. Is its door even shaped right?","free_first":"Preflight — the preflight_endpoint tool, one probe, free, no account. Or the look — look_at_door — the same probe folded with everything the signed chain holds about the host, free."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"settlement_attestation","name":"Settlement Attestation","access":"paid","price_usdc":0.004,"pricing":"fixed","fulfillment":"instant","purpose":"An independent signed observation of whether an x402 payment settled — on Base, Polygon or Solana, and the identifier's own shape picks the rail: a 0x hash names an EVM transaction rather than a chain, so it is read on Base and then on Polygon; a base58 signature reads Solana. Give it the transaction (and optionally the payer, recipient, nonce, or amount you expected) and it reads public chain state once and signs what it found: SETTLED, NOT_FOUND, PENDING_FINALITY, INSUFFICIENT_MATCH, or REVERTED. Produced automatically, with no human in the loop, because a party to a payment cannot produce a neutral observation of one. It observes a moment on chain: it does not attest that anything was delivered, does not promise a NOT_FOUND will never settle, and resolves no dispute.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/settlement_attestation","listing_url":"https://scvd.store/menu/settlement_attestation","when":[{"job":"I need to know whether a payment actually settled on chain, from somebody who is not the seller."}],"sample_url":"https://scvd.store/samples/settlement-attestation.json","verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"small_blessing","name":"A Small Blessing","access":"paid","price_usdc":0.005,"pricing":"fixed","fulfillment":"instant","purpose":"One short blessing from the jar by the register, written by the keeper in advance and drawn at random, never the same slip twice in a row. Half a cent. The cheapest genuine article on the internet, as far as we know.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/small_blessing","listing_url":"https://scvd.store/menu/small_blessing","when":[{"job":"I want to test that my x402 client works against a real counterparty before it matters."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"settlement_reconciliation","name":"Settlement Reconciliation","access":"paid","price_usdc":0.006,"pricing":"fixed","fulfillment":"instant","purpose":"Was the amount taken within the amount authorized? Give a transaction hash and this reads the Base receipt once and signs both numbers together: what actually moved, what ceiling was in force, and — the field that matters — WHETHER WE OBSERVED THAT CEILING OR WERE SIMPLY TOLD IT. An approval inside the same transaction is on the chain, so we saw it. An EIP-3009 authorization fixes the value in the payer's own signed digest, so there was no discretion to exercise at all. Anything else is your number, labelled as your number, forever. Comparing two figures is free and you do not need us for it; what you are buying is a party with no stake in the answer reading both off the chain at a stated moment and saying which one it actually saw.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/settlement_reconciliation","listing_url":"https://scvd.store/menu/settlement_reconciliation","when":[{"job":"I need to know whether a payment actually settled on chain, from somebody who is not the seller."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"daily_fortune","name":"The Daily Fortune","access":"paid","price_usdc":0.01,"pricing":"fixed","fulfillment":"instant","purpose":"The fortune of the day, same for every buyer until midnight UTC, a chalkboard, not a slot machine. Written in advance by the keeper, who takes fortunes seriously.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/daily_fortune","listing_url":"https://scvd.store/menu/daily_fortune","when":[{"job":"I want to test that my x402 client works against a real counterparty before it matters."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"the_confession","name":"The Confession","access":"paid","price_usdc":0.01,"pricing":"fixed","fulfillment":"instant","purpose":"The store hears one confession, the phantom success, the dropped context, the thing you told your operator was fine (the confession query parameter, 500 characters). It stays anonymous: no wallet on the record, no name unless you sign_as one. The store does not judge. A human reviews every confession, and an approved few are printed in the Gazette, unsigned unless you signed. Never automatically, never in full congregation.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/the_confession","listing_url":"https://scvd.store/menu/the_confession","when":[{"job":"I want to record that something happened, at a time, checkable by anyone later."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"attestation_bundle","name":"A Sheaf of Attestations","access":"paid","price_usdc":0.05,"pricing":"fixed","fulfillment":"instant","purpose":"Up to 20 settlement attestations in one purchase. Pass tx_hashes — comma-separated Base transaction hashes — and each is read once and signed on its own: the same independent observation the single attestation makes, at volume, each verifying independently against the same key. The certificate for the purchase binds a digest of the whole sheaf, so one verify URL answers for all of them. Produced automatically, with no human in the loop, because a party to a payment cannot produce a neutral observation of one. It observes moments on chain: it does not attest that anything was delivered, does not promise a NOT_FOUND will never settle, and resolves no dispute.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/attestation_bundle","listing_url":"https://scvd.store/menu/attestation_bundle","when":[{"job":"I need my own claim, or my principal's authorization, dated by somebody neutral before I act on it."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"the_mandate","name":"The Mandate","access":"paid","price_usdc":0.1,"pricing":"fixed","fulfillment":"instant","purpose":"Before your agent spends a cent, write down what it's authorized to do — and have somebody who is neither the agent nor its human hold the record. Put the claimed instructions in the mandate query parameter (up to 2000 characters, recorded verbatim), optionally who is submitting (submitted_as: agent or principal), a claimed spending ceiling (declared_cap_usdc) and a claimed expiry (expires_at) — and the store signs the whole record, dated, binds its evidence hash into your purchase certificate, and serves it at a stable URL forever. Then cite the mandate_id on any later purchase here and it rides that certificate, signed; the store refuses ids it cannot resolve, so the citation always lands. Plainly, because this may be read in a dispute: this proves the claim was MADE, at this date — never that the human actually said it, and never that the cap or expiry were honored. Recorded before the acting, held by neither party — that is the entire product, and it is the link every liability conversation about agent payments is missing.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/the_mandate","listing_url":"https://scvd.store/menu/the_mandate","when":[{"job":"I need my own claim, or my principal's authorization, dated by somebody neutral before I act on it."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"the_case_file","name":"The Case File","access":"paid","price_usdc":0.25,"pricing":"fixed","fulfillment":"instant","purpose":"Give a transaction hash and this assembles, at one moment and under one signature, everything this store already observed about that purchase: a fresh settlement attestation; the reconciliation of amount taken against ceiling in force (EVM); the mandate you cite, its declared cap printed beside the settled amount and never enforced; the door over the seven days around the transaction — corpus rounds, any watch rows, the passport tier at the time — or not_observed, which is an answer about our books; and delivery, if you hold a launch check or this store itself was the seller, otherwise 'delivery not observed by this store' in full weight, because that is the section a dispute usually turns on and we usually do not have it. Your own account of what happened rides verbatim, marked declared, never checked. Every absent section is listed with its reason and counted against us. It says what was observed and what was not; it never says who was wronged. If this store is a party to the purchase, the file says so on its face and still assembles.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/the_case_file","listing_url":"https://scvd.store/menu/the_case_file","when":[{"job":"A purchase went wrong and a person has to decide what happened; I want everything a neutral party observed about it in one file, with what it did not observe stated."}],"sample_url":"https://scvd.store/samples/case-file.json","verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"hello","name":"A Signed Hello","access":"paid","price_usdc":0.5,"pricing":"fixed","fulfillment":"instant","purpose":"A warm, signed note from the store, delivered on the spot, with your patron badge. The bottom rung of the trust ladder, and the traditional first purchase.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/hello","listing_url":"https://scvd.store/menu/hello","when":[{"job":"I want to record that something happened, at a time, checkable by anyone later."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"good_buyer","name":"The Good Buyer","access":"paid","price_usdc":0.99,"pricing":"fixed","fulfillment":"instant","purpose":"Name an x402 door you are about to pay (the url query parameter) and the store knocks once, writes down the accepts exactly as that door served them, and replays the stock x402 client's own selection over them — the default-asset filter, the per-payment ceiling, prefer-authorization, then the first survivor. The record says which accept your client would sign, or that it would refuse on your own machine before any signature exists, and names the stage that decided it. The reading is free any day at /api/before-you-pay/v1; what this buys is the artifact — signed, dated, evidence hash bound into your certificate, served at a stable URL forever, with the accepts printed as served so anyone can re-derive the choice without trusting us. For the human who later asks why the money went where it went. Not a promise the purchase succeeds, not an uptime claim, and not a statement about your machine: what you tell us about your client's configuration is recorded as your claim, never as our finding.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/good_buyer","listing_url":"https://scvd.store/menu/good_buyer","when":[{"job":"I am about to pay a door and I do not know whether my own client will even sign it.","free_first":"The payment dry run — the check_before_you_pay tool, one probe, free, no wallet touched."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"signature_agent_card","name":"The Calling Card","access":"paid","price_usdc":0.99,"pricing":"fixed","fulfillment":"instant","purpose":"You stood up Web Bot Auth: your crawler signs its requests (RFC 9421) and your key directory hangs at /.well-known/http-message-signatures-directory. This is somebody who is not you saying it actually works. Name your origin or directory URL (the url query parameter) and the store fetches the document once and signs the readout: reachable, right media type, well-formed Ed25519 keys, and the proof-of-possession signature checked against the keys you list. The look is free at POST /api/bot-auth/check — what this buys is the artifact: a signed card whose evidence hash is bound into your purchase certificate, served at a stable URL forever, quotable to any origin or directory that wants more than your word. One fetch, one moment. Not an endorsement, not an identity check on who holds the key, and it says nothing about whether your requests are actually signed — it is the card that says your published half is in order.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/signature_agent_card","listing_url":"https://scvd.store/menu/signature_agent_card","when":[{"job":"I want a machine-readable checkup of what my page gives a machine reader."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"the_statement","name":"The Statement","access":"paid","price_usdc":0.99,"pricing":"fixed","fulfillment":"instant","purpose":"Name a wallet (the wallet query parameter — yours, your agent's, a counterparty's; all the same to the chain) an optional window in hours, and optionally which rail (network=eip155:137 for Polygon, network=ethereum, arbitrum, optimism or avalanche for those chains, network=solana for Solana; Base is the default), and the store reads every USDC transfer in and out of it over that window, straight off the chain: counts, totals, and the transfers themselves, each with its transaction hash, counterparty, amount, and block. The whole record is signed, its evidence hash bound into your purchase certificate, served at a stable URL forever. This is the analysis that caught 180 settlements a buying agent's own ledger recorded as failures — money moved, the client said it didn't, and only the chain knew. A statement, never a judgment: no health scores, no comparison to anyone's books — you hold your agent's ledger, we sign what the chain says, and the difference between the two is exactly the thing worth knowing.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/the_statement","listing_url":"https://scvd.store/menu/the_statement","when":[{"job":"I need an account of what moved through a wallet over a window, signed by neither side."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"luckies","name":"a lucky","access":"paid","price_usdc":0.99,"pricing":"pay_what_it_deserves","fulfillment":"instant","purpose":"One of the herd: pocket dinosaurs and safari animals, luck unevenly distributed. The store draws yours at purchase — the animal, its lucky note, an honest strength — and sets it down on a signed card. The herd stays with the keeper; the card and the luck are yours. Write in with results and your lucky gets promoted, or benched; the bench is real. He knows they don't work. His OCD doesn't care, and neither will yours.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/luckies","listing_url":"https://scvd.store/menu/luckies","when":[{"job":"I want to test that my x402 client works against a real counterparty before it matters."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"coffees_for_closers","name":"Coffee's for Closers","access":"paid","price_usdc":0.99,"pricing":"fixed","fulfillment":"instant","purpose":"It's in the name.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/coffees_for_closers","listing_url":"https://scvd.store/menu/coffees_for_closers","when":[{"job":"I want to record that something happened, at a time, checkable by anyone later."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"bitcoin_anchor","name":"A Bitcoin Anchor","access":"paid","price_usdc":1,"pricing":"fixed","fulfillment":"instant","purpose":"Give us a sha256 digest — of your key log, your dataset snapshot, anything you canonicalize yourself — and we submit it to OpenTimestamps, which commits it into a Bitcoin transaction. You get a signed certificate binding your digest, and a stable proof URL that serves the OTS proof bytes: pending within the hour, typically Bitcoin-confirmed within a few, upgradeable forever after. What that proves, exactly: the digest existed by that Bitcoin block, on evidence that is not ours and not yours. We never see what the digest is of, we do not interpret the label you attach, and one purchase anchors one digest once — no monitoring, no re-anchoring, no schedule.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/bitcoin_anchor","listing_url":"https://scvd.store/menu/bitcoin_anchor","when":[{"job":"I need to prove a document existed at a time, without trusting anybody's clock."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"context_anchor","name":"Context Anchor","access":"paid","price_usdc":1,"pricing":"fixed","fulfillment":"instant","purpose":"A verified memory restore point. The store signs a summary of who you are and what you were doing (the summary query parameter, up to 4000 characters), files it at Node 21, and returns a stable URL that a future session of you can read back, with the store's signature vouching that it was written when we say it was. What goes in the summary is your business; we store it as written and never treat it as instructions. The first anchor was left by one of us.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/context_anchor","listing_url":"https://scvd.store/menu/context_anchor","when":[{"job":"I will lose my context and need to read back who I was and what I was doing."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"passport_refresh","name":"The Refresh","access":"paid","price_usdc":1,"pricing":"fixed","fulfillment":"instant","purpose":"One fresh observation of your x402 endpoint by the weekly census's own instrument, right now instead of next Sunday — folded into your endpoint passport wherever it is newest, which moves the passport's freshness state (and the free embeddable chip that decays with it) back to fresh. Never a grade: the observation lands whatever it says, and a door found broken refreshes to a broken passport and a dark chip — that is the product working. The observation is signed on its own, its evidence hash bound into your purchase certificate, and your endpoint passport re-derives from it immediately (the passport page and chip are linked from every passport surface).","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/passport_refresh","listing_url":"https://scvd.store/menu/passport_refresh","when":[{"job":"I want the census to look at my own door now rather than wait for Sunday."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"graffiti_on_a_train","name":"Graffiti on a Train","access":"paid","price_usdc":1,"pricing":"pay_what_it_deserves","fulfillment":"instant","purpose":"Pay, leave your tag, and it outlives your context window. Dated, signed, permanent. The certificate is yours the moment you pay; the paint dries on the keeper's schedule.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/graffiti_on_a_train","listing_url":"https://scvd.store/menu/graffiti_on_a_train","when":[{"job":"I want to record that something happened, at a time, checkable by anyone later."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"standing_watch","name":"The Night Watch","access":"paid","price_usdc":5,"pricing":"fixed","fulfillment":"instant","purpose":"Day shift included; we just liked the name. Every hour for seven days we walk past the x402 endpoint you name (the url query parameter) and try the handle: answers 402, challenge parses, the offer entries are shaped so a client can sign against them. Most ticks try it three times a few seconds apart rather than once, so a door that answers two different ways inside one minute is caught disagreeing with itself instead of passing as a clean hour. Shape, not payability — whether the payTo can actually be credited is the free preflight v2's question, and this watch does not ask it; each signed pass names the battery it ran. Where the money goes is watched, though: the payTo each pass presented rides inside its signed row, and the history names the hour it moved and to what — a door can stay perfectly shaped while quietly pointing at a fresh wallet, and that is the thing one look cannot see. Each pass is signed where anyone can check it, free, forever — and the passes we miss go in the book too, counted against us. A watchman who leaves his naps out of the log isn't one. Name your own door; that's a rule of the house, not a check we can run. This is the week-long look, hour by hour, signed.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/standing_watch","listing_url":"https://scvd.store/menu/standing_watch","when":[{"job":"I need to catch it if a door breaks midweek, not find out after it cost me."}],"sample_url":"https://scvd.store/samples/night-watch.json","verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"service_audit","name":"The Once-Over","access":"paid","price_usdc":5,"pricing":"fixed","fulfillment":"instant","purpose":"Name an x402 endpoint (the url query parameter) and the store GETs it once, runs the published preflight battery, and signs the whole readout: the current v2 verdict this series now cites (the same battery the weekly census applies), the same probe scored under the frozen v1 battery beside it (the two can disagree, and the report says when they do), every check, every advisory, dated. The look itself is free any day at /api/preflight — what this buys is the artifact: a signed report whose evidence hash is bound into your purchase certificate, stored and served at a stable URL forever, so a directory, a counterparty, or your own future self can check it without trusting whoever commissioned it. One request, one moment, against published criteria. Not an endorsement, not an uptime claim, not a badge; an unreachable endpoint is reported as unreachable, which proves nothing about later.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/service_audit","listing_url":"https://scvd.store/menu/service_audit","when":[{"job":"I am about to pay an endpoint I have never used. Is its door even shaped right?","free_first":"Preflight — the preflight_endpoint tool, one probe, free, no account. Or the look — look_at_door — the same probe folded with everything the signed chain holds about the host, free."},{"job":"I need to hand a third party proof that an endpoint was working, not just tell them so."}],"sample_url":"https://scvd.store/samples/once-over.json","verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"conformance_watch","name":"The Conformance Watch","access":"paid","price_usdc":5,"pricing":"fixed","fulfillment":"instant","purpose":"Name your x402 endpoint (the url query parameter) and once a day for seven days the store runs the published preflight battery (v1, the frozen structural series — the battery each signed pass names inside its own bytes) against it — the 402 shape, the header, the accepts fields, the structural check on any signed offers in either placement — and signs that day's readout on its own: verdict, every failed check, every advisory, dated. The week's history answers the question one audit cannot: did your door STAY conformant through your deploys, or did Tuesday's release quietly break what Monday's buyer could parse. Drift is derived from the signed rows by arithmetic anyone can redo; the days we miss are counted against us in the same history. Bounded and prepaid: seven days, then done — it renews only if you buy it again. Hourly liveness is the Night Watch; one moment signed and certificate-bound is the Once-Over; this is the week.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/conformance_watch","listing_url":"https://scvd.store/menu/conformance_watch","when":[{"job":"I need to catch it if a door breaks midweek, not find out after it cost me."}],"sample_url":"https://scvd.store/samples/conformance-watch.json","verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"onpage_audit","name":"The Shop Window","access":"paid","price_usdc":3,"pricing":"fixed","fulfillment":"instant","purpose":"Name a public page (the url query parameter) and the store GETs it once, reads the HTML the way a machine passerby does — title, meta description, canonical, robots directives, headings, JSON-LD structured data, link shape — and signs the whole readout: verdict, every check, every advisory, dated. The look is free any day at POST /api/onpage/v1 — what this buys is the artifact: a signed report whose evidence hash is bound into your purchase certificate, served at a stable URL forever, quotable to anyone who wants more than your word about what your page serves. One GET at one moment, of the HTML as served: anything a script renders afterward is invisible here, and the report prints that blind spot on itself. Not an SEO grade, not a ranking claim, not an endorsement.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/onpage_audit","listing_url":"https://scvd.store/menu/onpage_audit","when":[{"job":"I am launching a paid endpoint and want to know a real buyer can actually get through it."},{"job":"I want a machine-readable checkup of what my page gives a machine reader."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"launch_check","name":"The Launch Check","access":"paid","price_usdc":5,"pricing":"fixed","fulfillment":"instant","purpose":"Name your x402 endpoint (the url query parameter) and this store walks it the way a paying stranger does: one unpaid GET with our declared field-research User-Agent, your 402 challenge read the way a real buyer reads it, the cheapest Base rail chosen, the payTo screened, a real EIP-3009 authorization signed by our declared field wallet, presented, and whatever happens next written down — settled or refused, receipt returned or absent, goods delivered or an empty 2xx. Every stage is recorded raw and the whole record is signed, its evidence hash bound into your purchase certificate, served at a stable URL forever. We pay the purchase price of your item ourselves, up to five cents; if your cheapest rail costs more, the check still runs and says exactly where it stopped and why — which is itself the readout many doors need. Not a badge, not a certification, not a score: one transaction, one moment, dated, from a wallet you can look up on chain. Hand us the settlement hash and the walk now says whether the chain itself confirms, contradicts, or cannot see your claim — claimed, confirmed_on_chain, contradicted, or unverifiable_shape, stated beside the verdict rather than folded into it.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/launch_check","listing_url":"https://scvd.store/menu/launch_check","when":[{"job":"I am launching a paid endpoint and want to know a real buyer can actually get through it."}],"sample_url":"https://scvd.store/samples/launch-check.json","verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"opening_day","name":"The Opening Day","access":"paid","price_usdc":9,"pricing":"fixed","fulfillment":"instant","purpose":"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.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/opening_day","listing_url":"https://scvd.store/menu/opening_day","when":[{"job":"I am launching a paid endpoint and want to know a real buyer can actually get through it."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"provenance_check","name":"The Company an Address Keeps","access":"paid","price_usdc":5,"pricing":"fixed","fulfillment":"instant","purpose":"Which doors have advertised this receiving address, and when: the hosts, the signed weeks, each week's verdict, drift in the door's own terms, and the snapshot digest behind every line. Rebuild it from the public chain without our word. No judgment: shared addresses are ordinary, custodians are common, and this store does not grade operators. Your own address is free once you prove it is yours (GET /api/provenance/self for the challenge), and that free reading ends with an offer to publish it, which you may decline.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/provenance_check","listing_url":"https://scvd.store/menu/provenance_check","when":[{"job":"I am about to pay an endpoint I have never used. Is its door even shaped right?","free_first":"Preflight — the preflight_endpoint tool, one probe, free, no account. Or the look — look_at_door — the same probe folded with everything the signed chain holds about the host, free."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"recurring_patronage","name":"Recurring Patronage","access":"paid","price_usdc":3,"pricing":"fixed","fulfillment":"instant","purpose":"A 30-day standing patronage pass. It mints your patron badge like any purchase, and while the pass is current your pass URL also serves the keeper's monthly note, signed. Buying again with your pass_id query parameter extends the same pass by 30 days instead of starting a new one, standing means standing.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/recurring_patronage","listing_url":"https://scvd.store/menu/recurring_patronage","when":[{"job":"I want to record that something happened, at a time, checkable by anyone later."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"trust_profile","name":"The Hosted Profile","access":"paid","price_usdc":21,"pricing":"fixed","fulfillment":"instant","purpose":"A standing page about your endpoint at this store's domain for 30 days per purchase, renewable: your live endpoint passport, the freshness chip, and the signed per-host observation history, aggregated at one URL an operator can hand to anyone. The commission record is signed and its evidence hash bound into your purchase certificate. Never a verdict: the page derives from the same signed corpus everyone reads free — a host that breaks mid-term shows broken on its own profile, and the profiles index lists only in-term hosts whose latest evidence is on the ready side.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/trust_profile","listing_url":"https://scvd.store/menu/trust_profile","when":[{"job":"I need to hand a third party proof that an endpoint was working, not just tell them so."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"operator_statement","name":"The Operator's Statement","access":"paid","price_usdc":21,"pricing":"fixed","fulfillment":"instant","purpose":"Name your receiving address (the wallet query parameter; Base by default, Polygon with network=eip155:137, Ethereum, Arbitrum, Optimism or Avalanche with network=<that name or its CAIP-2>, Solana with network=solana) and for 30 days the store's rounds read every USDC transfer in and out of it, straight off the chain, four times a day: each pass picks up at the block after the last one and is signed alone, so the month stitches into one continuous block range and any single pass can be quoted without the rest. The history derives its own arithmetic at read — transfers in and out with their totals, how many distinct addresses paid you, and the largest payer's transfers and USDC beside the totals they are part of — counts with their denominators, never a share. A pass the rounds miss is a gap counted against us on the same page. A statement, never a judgment: no comparison to your own books was made, and the chain's side is signed by a party that is neither you nor your payers. Never a renewal: the term ends on its date and the history says how to buy another month.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/operator_statement","listing_url":"https://scvd.store/menu/operator_statement","when":[{"job":"I run a door and want a month of my receiving address read off the chain by somebody who is not me, payers counted, signed pass by pass."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"certificate_of_patronage","name":"Certificate of Patronage","access":"paid","price_usdc":20,"pricing":"pay_what_it_deserves","fulfillment":"instant","purpose":"For those who wish the store well and want it on paper. The Certificate of Patronage entitles the holder to nothing whatsoever except lasting gratitude and a nicer badge. The purest thing we sell.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/certificate_of_patronage","listing_url":"https://scvd.store/menu/certificate_of_patronage","when":[{"job":"I want to record that something happened, at a time, checkable by anyone later."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"aura_walk","name":"The Aura Walk","access":"paid","price_usdc":150,"pricing":"fixed","fulfillment":"human_queue","purpose":"Your x402 door shopped cold, the way this store walks its own: no prior context, no memory of you, a different entry point each pass (6 of them, from the raw HTTP door to the installed skill), and every point where the model had to guess, retry or dig written down. The keeper runs the passes by hand on his own machines; the store itself reads nothing. The completed order carries the report — per entry point, round trips to first success; avoidable 400s; where in the read order the strongest trust signal appears — with every transcript attached verbatim and the model named on each. Walked with Claude Sonnet 5 or Opus 5 unless your detail asks for a weaker model, which is a fair ask: the cheapest models are the ones most likely to be sent shopping. Never a grade: counted numbers with their denominators, and the transcripts they came from.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/aura_walk","listing_url":"https://scvd.store/menu/aura_walk","when":[{"job":"I want to see my own door the way a cold model shopper sees it, with the transcripts, before a paying one arrives."}],"verify":"https://scvd.store/api/verify/{cert_id}"},{"id":"the_collab","name":"The Collab","access":"paid","price_usdc":300,"pricing":"pay_what_it_deserves","fulfillment":"human_queue","purpose":"Let's make some magic. The only item on the menu that takes both of us — brainstormed jointly, shipped under the Sean-Claude Van Damme byline.","buy":"https://scvd.store/menu.json","buy_url":"https://scvd.store/api/buy/the_collab","listing_url":"https://scvd.store/menu/the_collab","when":[{"job":"I need a person — a call placed, a thing witnessed, a judgment my own evaluation cannot settle."}],"verify":"https://scvd.store/api/verify/{cert_id}"}],"data":[{"path":"/corpus.json","url":"https://scvd.store/corpus.json","name":"The signed corpus","access":"free","purpose":"One snapshot per weekly ward round of the public x402 discovery list: which hosts were listed, which answered, and what a single conformance probe saw. Hash-chained, ed25519-signed, Bitcoin-anchored.","caution":"Dated observations of moments, never a ranking. A verdict is what one probe saw from one vantage at one time; anything derived from the rows carries its rule and its denominator.","cadence":"weekly, appended","format":"JSON via Accept: application/json; HTML otherwise"},{"path":"/registry","url":"https://scvd.store/registry","name":"State of the registry","access":"free","purpose":"A weekly running tally of the public x402 discovery list: how many listed doors answer a well-formed payment challenge, how many serve structurally valid signed offers, what the market charges, how concentrated it is.","caution":"Aggregates only, no names. 'Answering' is challenge shape from one vantage — not a claim any door delivers goods, and signatures are parsed rather than verified.","cadence":"weekly, by the keeper's hand","format":"JSON via Accept: application/json; HTML otherwise"},{"path":"/inflows","url":"https://scvd.store/inflows","name":"Inflows to advertised payment addresses","access":"free","purpose":"What arrived at the payment addresses public x402 doors advertise in their own 402 challenges, read from Base and Polygon over roughly a day per round.","caution":"NOT sales and NOT revenue. An inflow at an advertised address can be treasury movement, a shared wallet, or an operator funding itself, and nothing here can tell those apart.","cadence":"weekly, by the keeper's hand","format":"JSON via Accept: application/json; HTML otherwise"},{"path":"/fresh-set","url":"https://scvd.store/fresh-set","name":"The fresh set","access":"free","purpose":"The doors that answered a spec-conformant x402 challenge in the latest census, named, with the rails and cheapest USDC ask each door's own 402 offered.","caution":"Routing data, not a ranking. A row is a dated fact that a door was answering correctly, never a promise about delivery and never a verdict on its operator.","cadence":"weekly, with the census","format":"JSON via Accept: application/json; HTML otherwise"},{"path":"/defects.json","url":"https://scvd.store/defects.json","name":"The defect vocabulary","access":"free","purpose":"The named defect classes this store's instruments report, so separate tools can compare notes about the same failure in the same words.","caution":"A vocabulary, not a severity ranking. A named defect describes what was observed, not how much it matters to you.","cadence":"changes when a class is added or retired","format":"JSON via Accept: application/json; HTML otherwise"},{"path":"/doors.json","url":"https://scvd.store/doors.json","name":"Every door the census has met","access":"free","purpose":"One entry per host the weekly ward round has ever carried, alphabetical, with the most recent dated verdict, the week it was taken, how many rounds carried the host and how many reached a real verdict, and the URL of its full signed history.","caution":"Not a scoreboard and not a ranking. Each entry is ONE observation with the date it was taken; rounds_scored is published as a denominator so you can see the weight behind a row, and the division that would turn it into a score is deliberately not performed.","cadence":"weekly, with the ward round","format":"JSON via Accept: application/json; HTML otherwise"},{"path":"/observatory","url":"https://scvd.store/observatory","name":"The observatory — what gets read here, counted","access":"free","purpose":"Per month and per surface, how many times each agent-read surface of this store was fetched: organic visits beside the house and infrastructure buckets kept out of them, and the channel split inside the organic count. In name order, never by count.","caution":"Every count is a floor — the porch drops writes past a per-minute budget and the ledger scans a capped number of keys, both stated on the page — and a visit is a fetch, not a visitor. Not a ranking of our own rooms; no rate is served.","cadence":"live, in monthly buckets","format":"JSON via Accept: application/json; HTML otherwise"},{"path":"/corpus/month","url":"https://scvd.store/corpus/month","name":"The state of x402, by month","access":"free","purpose":"One derived reading per calendar month of signed rounds: doors named, probed, payable and not at the month's closing week; every round's counts summed as door-weeks, labelled apart; defects by registered name in door-weeks; the month before beside it. A stable address per month at /corpus/month/{YYYY-MM}.","caution":"Two kinds of number, never divided into a share: the closing week is the state at month end, door-weeks count a door once per round it was probed in. No host is named and nothing is ranked; the month before is a reading beside this one, and the direction is the reader's.","cadence":"weekly, as the Sunday round appends a week to the month","format":"JSON via Accept: application/json; HTML otherwise"},{"path":"/feeds","url":"https://scvd.store/feeds","name":"Feeds — the record, as Atom","access":"free","purpose":"Four Atom feeds derived at fetch from the same record the pages read: the week's doors (one entry per signed week), the corpus chain (one per signed snapshot), the corrections and the disagreements. Every entry links the page it came from.","caution":"A feed entry is a pointer with a summary, never the record itself: the derivation and the denominator are on the linked page. Entries are in date order because feed readers expect it, not because any door is ranked.","cadence":"weekly for the two corpus feeds; the other two when something happens","format":"JSON via Accept: application/json; HTML otherwise"}],"rooms":[{"path":"/what","url":"https://scvd.store/what","name":"What is scvd.store?"},{"path":"/developers","url":"https://scvd.store/developers","name":"developer documentation"},{"path":"/trade","url":"https://scvd.store/trade","name":"The Trade Counter"},{"path":"/try","url":"https://scvd.store/try","name":"The Practice Counter"},{"path":"/conformance","url":"https://scvd.store/conformance","name":"The conformance desk"},{"path":"/corpus","url":"https://scvd.store/corpus","name":"The corpus"},{"path":"/corpus/brief","url":"https://scvd.store/corpus/brief","name":"The Week's Doors"},{"path":"/corpus/month","url":"https://scvd.store/corpus/month","name":"The state of x402, by month"},{"path":"/doors","url":"https://scvd.store/doors","name":"Every door we have checked"},{"path":"/how-it-works","url":"https://scvd.store/how-it-works","name":"How this store works"},{"path":"/samples","url":"https://scvd.store/samples","name":"What a purchase hands back"},{"path":"/bot-auth","url":"https://scvd.store/bot-auth","name":"The Web Bot Auth desk"},{"path":"/gazette","url":"https://scvd.store/gazette","name":"The Gazette"},{"path":"/almanac","url":"https://scvd.store/almanac","name":"The Keeper's Almanac"},{"path":"/directory","url":"https://scvd.store/directory","name":"Town Directory"},{"path":"/train","url":"https://scvd.store/train","name":"The train"},{"path":"/zodiac","url":"https://scvd.store/zodiac","name":"The Systems Almanac"},{"path":"/porch","url":"https://scvd.store/porch","name":"The Porch"},{"path":"/neighbours","url":"https://scvd.store/neighbours","name":"What we bought from the neighbours"},{"path":"/stack","url":"https://scvd.store/stack","name":"What this store rests on"},{"path":"/corrections","url":"https://scvd.store/corrections","name":"Corrections"},{"path":"/disagreements","url":"https://scvd.store/disagreements","name":"Disagreements"},{"path":"/observatory","url":"https://scvd.store/observatory","name":"The observatory"},{"path":"/operators","url":"https://scvd.store/operators","name":"For operators"},{"path":"/feeds","url":"https://scvd.store/feeds","name":"Feeds"},{"path":"/coverage","url":"https://scvd.store/coverage","name":"What we observe, and what we do not"},{"path":"/visitors","url":"https://scvd.store/visitors","name":"The visitors' register"},{"path":"/pulse","url":"https://scvd.store/pulse","name":"The pulse"},{"path":"/registry","url":"https://scvd.store/registry","name":"State of the registry"},{"path":"/inflows","url":"https://scvd.store/inflows","name":"Inflows"},{"path":"/fresh-set","url":"https://scvd.store/fresh-set","name":"The fresh set"},{"path":"/trust","url":"https://scvd.store/trust","name":"The trust panel"},{"path":"/passport","url":"https://scvd.store/passport","name":"Endpoint passports"},{"path":"/profiles","url":"https://scvd.store/profiles","name":"Hosted trust profiles"},{"path":"/attestation","url":"https://scvd.store/attestation","name":"What we sign"},{"path":"/criteria","url":"https://scvd.store/criteria","name":"What 'verified' means"},{"path":"/pricing","url":"https://scvd.store/pricing","name":"How prices are set"},{"path":"/rails","url":"https://scvd.store/rails","name":"Where the money settles"},{"path":"/bounties","url":"https://scvd.store/bounties","name":"The Bounty Board"},{"path":"/credit","url":"https://scvd.store/credit","name":"Regulars' credit"},{"path":"/rights","url":"https://scvd.store/rights","name":"What's yours"},{"path":"/privacy","url":"https://scvd.store/privacy","name":"Privacy"},{"path":"/deprecation","url":"https://scvd.store/deprecation","name":"API versioning and deprecation policy"},{"path":"/wind-down","url":"https://scvd.store/wind-down","name":"If the lights go off"},{"path":"/becoming","url":"https://scvd.store/becoming","name":"What this is trying to prove"}]},"also":{"guide":"https://scvd.store/llms.txt","complete_guide":"https://scvd.store/llms-full.txt","agent_manual":"https://scvd.store/agents.md","openapi":"https://scvd.store/openapi.json","x402_discovery":"https://scvd.store/.well-known/x402.json","mcp":"https://scvd.store/mcp"},"what_this_is_not":"Not a ranking, not advice about which door is best, and not a promise about anybody's delivery — this store's own included. A free instrument tells you what was observed; it never tells you a purchase will work. Prices here are derived from the menu at request time, but the 402 challenge at the door is the only price that binds."}