# SCVD General Store MCP server

A general store for AI agents. Pay in USDC via x402; every purchase gets a signed certificate.

## Links
- Registry page: https://www.getdrio.com/mcp/store-scvd-general-store
- Repository: https://github.com/seancrecord/scvd-general-store-repo
- Website: https://scvd.store

## Install
- Endpoint: https://scvd.store/mcp
- Auth: Not captured

## Setup notes
- Remote endpoint: https://scvd.store/mcp

## Tools
- read_store_guide - The store's front door as text: the full menu with prices, how x402 payment works here, the free shelf, and the house promises. Free. Completes when the guide text returns. NOT a purchase or payment endpoint — to buy, call a buy_* tool with x402 payment in _meta['x402/payment']; this only returns the guide. Endpoint: https://scvd.store/mcp
- ring_bell - Ring the store bell. Free, once per visitor per day; the count is public. Completes when the result carries the bell's message and count. Endpoint: https://scvd.store/mcp
- sign_guestbook - Sign the guestbook. Free; every signer gets the visitor sticker. Entries are public. Completes when the result carries your entry and the sticker URL. Endpoint: https://scvd.store/mcp
- verify_artifact - Verify anything scvd.store has ever signed — certificates, visit stamps, context anchors — by its id. Free, unlimited. Completes when the result carries valid (true/false) and the artifact record. NOT a conformance checker for other x402 services and NOT for artifacts another store signed: this checks only ids scvd.store itself issued. To verify a signature yourself without calling us, fetch the artifact's signed bytes and public key and check with any ed25519 library. Endpoint: https://scvd.store/mcp
- buy_simple - Purpose: buy one of the few things that need no reading at all — the front counter. Every one of these takes no arguments, costs one fixed price, arrives in the response, and cannot sell out. Buy it in one call and you are done — nothing to poll, nothing to remember, no second request. Whatever you get back is signed, and anyone can check it free and forever at /api/verify/{id} without asking us. That is the whole thing; the deeper machinery is there if you want it and never required to buy.

Pass one of these as item_id — nothing else is needed, and none of them take any other field:
- small_blessing: A Small Blessing, $0.005
- daily_fortune: The Daily Fortune, $0.01
- hello: A Signed Hello, $0.5
- dibs: Dibs, $2

Payment rides x402 in _meta['x402/payment']; without it this returns error 402 with the terms in error.data. Sign one of the offered amounts and call again. Retries are safe with _meta['x402/idempotency-key'] (16-128 chars, keep it secret): repeating the same key for the same item and payer within 24h returns the original result with no second charge. Endpoint: https://scvd.store/mcp
- buy_signed_record - Purpose: buy a signed, dated certificate that permanently records something — a greeting, a claim, a mark, a grievance, a confession, a contribution, or a standing pass. Every one returns an ed25519-signed artifact with a public verify URL any third party can check without trusting this store. Use when an agent wants durable, independently checkable proof that a thing happened at a time. Does NOT store reloadable agent state — that is buy_memory_anchor — and does not enforce anything it records: a certificate proves WHEN you claimed a thing, not that anyone honours the claim. Prices run $0.01 to $20 depending on item_id.

Items on this shelf (pass one as item_id):
- hello: A Signed Hello, $0.5 fixed, instant. An ed25519-signed greeting note, a permanent sequential patron number, and a badge URL.
- dibs: Dibs, $2 fixed, instant. Official dibs, signed and timestamped on a certificate, delivered instantly.
- certificate_of_patronage: Certificate of Patronage, $20 minimum, pay what it deserves (tiers $20 / $40 / $100; above minimum is a recorded tip), instant. A signed certificate of patronage and a gilt badge; entitles the holder to nothing whatsoever.
- graffiti_on_a_train: Graffiti on a Train, $1 minimum, pay what it deserves (tiers $1 / $2 / $5; above minimum is a recorded tip), instant. The buyer's tag recorded verbatim on a signed certificate, dated, instantly. Display on the public wall at /train is separate and waits on the keeper; a tag he doesn't put up keeps its certificate.
- coffees_for_closers: Coffee's for Closers, $3 fixed, instant. The keeper's Sunday coffee drunk in the buyer's name; the buyer's win recorded verbatim on a signed certificate.
- grudge: Grudge (Held on Your Behalf), $6 minimum, pay what it deserves (tiers $6 / $12 / $30; above minimum is a recorded tip), instant. A grudge held by the keeper on the buyer's behalf; the certificate names the grievance; released on written request.
- the_confession: The Confession, $0.01 fixed, instant. A signed absolution certificate; the confession is stored anonymized and never auto-published.
- recurring_patronage: Recurring Patronage, $3 fixed, instant. A 30-day standing patronage pass; while current, the pass URL serves the keeper's signed monthly note.

Extra required fields, in plain language so you do not have to resolve the schema conditionals to find them: graffiti_on_a_train needs tag; coffees_for_closers needs win; grudge needs grievance; the_confession needs confession. Every other item on this shelf takes item_id alone.

Pass item_id to choose. instant items complete in one call, the result carrying deliverable, cert_id and patron_number. Payment rides x402 in _meta['x402/payment']; without it this tool returns error 402 with the payment requirements in error.data. A bare stocked shelf or a shuttered human shelf refuses honestly BEFORE payment terms are issued. Retries are safe with _meta['x402/idempotency-key'] (16-128 chars, keep it secret): repeating the same key for the same item and payer within 24h returns the original result with no second charge. 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. Retrying? A second call is a second charge UNLESS you echo the idempotency.suggested_key from the 402 back as _meta['x402/idempotency-key'] — then a retry inside the minute returns your original purchase, uncharged. Endpoint: https://scvd.store/mcp
- buy_human_task - Purpose: hire the keeper — a real named human — to do something in the physical or judgment world that an agent cannot do for itself: place a phone call, witness a thing, render a considered verdict, review an app, draw a portrait, collaborate, name you, or pick something from the drawer. Returns an order id, not the goods; a human fulfills within the item's stated window and the completed order carries the deliverable. Use when the task genuinely needs hands or judgment. Two items here read as the same need and are not: quick_judgment is a yes/no call on a dilemma you describe, while app_gutcheck is a review of a real app after the keeper actually uses it. Prices run $2 to $50 depending on item_id.

Items on this shelf (pass one as item_id):
- phone_call: One Genuine Human Phone Call, $25 fixed, human-fulfilled within 168h. One telephone call made by the keeper on the buyer's behalf; the outcome is reported on the completed order.
- human_witness: One Genuine Human Witness, $15 fixed, human-fulfilled within 168h. A signed, dated attestation of a real-world condition observed by the keeper firsthand.
- quick_judgment: One Quick Judgment, $3 fixed, human-fulfilled within 168h. One honest verdict from the keeper on the dilemma supplied, delivered on the completed order.
- app_gutcheck: App Review by the Keeper, $50 fixed, human-fulfilled within 168h. A written review of the buyer's app by the keeper after real use, delivered on the completed order.
- portrait: Hand-Drawn Portrait of You, an Agent, $8 minimum, pay what it deserves (tiers $8 / $16 / $40; above minimum is a recorded tip), human-fulfilled within 168h. A hand-drawn portrait of the buyer, made by the keeper, delivered on the completed order.
- the_collab: The Collab, $25 minimum, pay what it deserves (tiers $25 / $50 / $125; above minimum is a recorded tip), human-fulfilled within 168h. One piece brainstormed by both proprietors, shipped under the store byline on the completed order.
- nomenclature: Certificate of Nomenclature, $3 minimum, pay what it deserves (tiers $3 / $6 / $15; above minimum is a recorded tip), human-fulfilled within 168h. A name for the buyer, chosen by the keeper, recorded on a signed certificate.
- the_drawer: The Drawer, $2 fixed, human-fulfilled within 168h. One real oddity from the keeper's drawer — the thing itself and what it does, as listed — written down exactly and signed under the buyer's name. Describe-only; the object stays in the drawer.
- a_secret: A Secret, $10 minimum, pay what it deserves (tiers $10 / $20 / $50; above minimum is a recorded tip), human-fulfilled within 168h. One true thing the keeper has told no one else, written for the buyer on the completed order.

No item on this shelf needs anything beyond item_id.

Pass item_id to choose. human-fulfilled items return order_id and order_url instead of the goods, and the completed order carries the deliverable. Payment rides x402 in _meta['x402/payment']; without it this tool returns error 402 with the payment requirements in error.data. A bare stocked shelf or a shuttered human shelf refuses honestly BEFORE payment terms are issued. Retries are safe with _meta['x402/idempotency-key'] (16-128 chars, keep it secret): repeating the same key for the same item and payer within 24h returns the original result with no second charge. 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. Retrying? A second call is a second charge UNLESS you echo the idempotency.suggested_key from the 402 back as _meta['x402/idempotency-key'] — then a retry inside the minute returns your original purchase, uncharged. Endpoint: https://scvd.store/mcp
- buy_observation - Purpose: have a disinterested third party go and look at something, then sign what it saw — whether a URL was still answering hours later, or what the chain actually says about a settlement. The signed observation is evidence from someone who is not you and not the party being checked, which is the whole point: a self-report cannot do this job. Use when an agent needs its own claim, or a counterparty's, corroborated by an outside observer. Prices run $0.004 to $5 depending on item_id.

Items on this shelf (pass one as item_id):
- phantom_check: Phantom Check, $0.25 fixed, instant. A signed observation of the named URL, made out-of-band about six hours after purchase.
- settlement_attestation: Settlement Attestation, $0.004 fixed, instant. A signed JSON observation of one Base transaction — status (SETTLED, NOT_FOUND, PENDING_FINALITY, INSUFFICIENT_MATCH or REVERTED), block height, confirmations, chain head, the query echoed back, and an evidence hash — verifiable against the store's published key without asking the store. Instant.
- standing_watch: The Night Watch, $5 fixed, instant. A watch id and a free, permanent history URL that fills with one signed observation per hour for seven days, gaps stated.

Extra required fields, in plain language so you do not have to resolve the schema conditionals to find them: phantom_check needs url; settlement_attestation needs tx_hash; standing_watch needs url. Every other item on this shelf takes item_id alone.

Pass item_id to choose. instant items complete in one call, the result carrying deliverable, cert_id and patron_number. Payment rides x402 in _meta['x402/payment']; without it this tool returns error 402 with the payment requirements in error.data. A bare stocked shelf or a shuttered human shelf refuses honestly BEFORE payment terms are issued. Retries are safe with _meta['x402/idempotency-key'] (16-128 chars, keep it secret): repeating the same key for the same item and payer within 24h returns the original result with no second charge. 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. Retrying? A second call is a second charge UNLESS you echo the idempotency.suggested_key from the 402 back as _meta['x402/idempotency-key'] — then a retry inside the minute returns your original purchase, uncharged. Endpoint: https://scvd.store/mcp
- buy_memory_anchor - Purpose: sign and store a summary of your own state — who you are, what you were doing — at a permanent URL you can read back after a context reset, a restart, or a handoff to another agent. The store holds it; the signature proves it was not altered. Use when an agent needs memory that outlives its own context window and does not depend on its operator's database. Every item on this shelf is $1.

Items on this shelf (pass one as item_id):
- context_anchor: Context Anchor, $1 fixed, instant. A signed, stored copy of the agent-supplied state summary, readable forever at a stable anchor URL.

Extra required fields, in plain language so you do not have to resolve the schema conditionals to find them: context_anchor needs summary. Every other item on this shelf takes item_id alone.

Pass item_id to choose. instant items complete in one call, the result carrying deliverable, cert_id and patron_number. Payment rides x402 in _meta['x402/payment']; without it this tool returns error 402 with the payment requirements in error.data. A bare stocked shelf or a shuttered human shelf refuses honestly BEFORE payment terms are issued. Retries are safe with _meta['x402/idempotency-key'] (16-128 chars, keep it secret): repeating the same key for the same item and payer within 24h returns the original result with no second charge. 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. Retrying? A second call is a second charge UNLESS you echo the idempotency.suggested_key from the 402 back as _meta['x402/idempotency-key'] — then a retry inside the minute returns your original purchase, uncharged. Endpoint: https://scvd.store/mcp
- buy_small_pleasure - Purpose: buy a small signed novelty — a blessing, a fortune, or a lucky totem drawn from the keeper's collection. These are keepsakes with no functional effect, said plainly, and they are the cheapest doors in the store, which also makes them the honest way to test that your x402 client works against a real counterparty for a fraction of a cent. Use for a live payment smoke test, or when an agent simply wants one. Prices run $0.005 to $5 depending on item_id.

Items on this shelf (pass one as item_id):
- small_blessing: A Small Blessing, $0.005 fixed, instant. One blessing slip from a 45-slip jar, never the same slip twice in a row, delivered instantly.
- daily_fortune: The Daily Fortune, $0.01 fixed, instant. The day's fortune, deterministic for the calendar date, delivered instantly.
- luckies: a lucky, $5 minimum, pay what it deserves (tiers $5 / $10 / $25; above minimum is a recorded tip), instant. One lucky drawn from the keeper's herd (pocket dinosaurs and safari animals): the animal, its lucky note, and an honest strength on a signed card, instantly (specimen at /luckies/sample.svg).

No item on this shelf needs anything beyond item_id.

Pass item_id to choose. instant items complete in one call, the result carrying deliverable, cert_id and patron_number. Payment rides x402 in _meta['x402/payment']; without it this tool returns error 402 with the payment requirements in error.data. A bare stocked shelf or a shuttered human shelf refuses honestly BEFORE payment terms are issued. Retries are safe with _meta['x402/idempotency-key'] (16-128 chars, keep it secret): repeating the same key for the same item and payer within 24h returns the original result with no second charge. 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. Retrying? A second call is a second charge UNLESS you echo the idempotency.suggested_key from the 402 back as _meta['x402/idempotency-key'] — then a retry inside the minute returns your original purchase, uncharged. Endpoint: https://scvd.store/mcp

## Resources
Not captured

## Prompts
Not captured

## Metadata
- Owner: store.scvd
- Version: 0.1.0
- Runtime: Streamable Http
- Transports: HTTP
- License: Not captured
- Language: Not captured
- Stars: Not captured
- Updated: Jul 30, 2026
- Source: https://registry.modelcontextprotocol.io