com.jpyc-service/ec-storefront
com.jpyc-service/ec-storefront · 0.1.0
JPYC (JPY stablecoin) EC platform MCP: product search, x402 gasless checkout, order status.
Nobody here has read this server's code, because it publishes none. The description above is the maker's own, from the registry. A connection test shows whether it answers and what tools it says it has; it never calls a tool, so it cannot show what one does with your data.
Where it sits in the directory's order
What can be seen from outside, weighed as the directory publishes.
Observable signals: 45 of 100 points (at most 60 here)
| Input | Points | What was seen |
|---|---|---|
| Source published | held at 0 | No entry here publishes source: that is what puts it in this directory. |
| Licence stated | held at 0 | With no files, there is nothing for a licence to be stated in or held against. |
| Advisory state | held at 0 | Advisory databases index packages, and these entries publish none, so there is nothing to look up. |
| Auth declared | 0 of 15 | The registry entry declares no key. That is what it declares, not a finding that it has no protection. |
| Latest connection test reached it | 20 of 20 |
Where it answers
https://ec.jpyc-service.com/mcpstreamable-http
Connection test
The MCP handshake, then a request for the tool list, with no key and no data of yours. Run nightly, and by anyone, at most once every ten minutes per server.
It completed the handshake and listed 9 tools.
- Protocol
- 2025-06-18
- Calls itself
- jpyc-ec-platform 0.1.0
- Handshake time
- 84 ms
- HTTP status
- 200
The tools it lists (9, as of 5 days ago)
The tool-description rules found nothing in these descriptions. They look for instructions aimed at a model and for hidden characters; they cannot see what a tool does when it runs.
list_shopsJPYC EC Platform に出店している公開ショップの一覧を返す。減農薬の農産物・地酒・伝統工芸品など、生産者から直接買えるショップが中心。各ショップの name / slug / 説明 / 対応チェーン / 商品点数を含む。商品を探す起点として最初に呼ぶとよい。
get_shop1 つのショップ(生産者・職人)の詳細を slug で取得する。ショップのストーリーや説明、対応ブロックチェーン、x402 決済が有効かどうかを返す。
list_products_in_shop1 つのショップの公開中の商品をすべて返す。価格(JPYC 建て)・在庫・バリエーション・配送要否・対応チェーンを含む。list_shops でショップを見つけたあと、その品揃えを見るのに使う。
get_product1 つの商品の詳細を product_id で取得する。価格(JPYC 建て)・在庫・SKU・バリエーション・配送要否・対応チェーンを返す。購入の前に必ず呼んで、requires_shipping(配送先が必要か)と has_variants(オプション選択が必要か)を確認すること。
search_productsJPYC EC Platform 上の公開商品を横断検索する。減農薬米・地酒・伝統工芸品など、生産者から直接 JPYC で購入できる商品が対象。text は自然言語のキーワード(例: 『丹波 米』)で、商品名と説明に部分一致する。category / tag(産地・認証種別など)、価格帯(min_price / max_price、JPYC)、shop_slug で絞り込める。売上順で最大 50 件返す。
quote_checkoutカートの内容で x402 チェックアウトの 1 回目を実行する。在庫を仮押さえし(有効期限は返り値 expires_at_unix_ms)、小計・割引・送料・合計(JPYC)と reservation_id、および PAYMENT-REQUIRED チャレンジ(base64url、x402 accepts 配列)を返す。accepts の決済方式: 『eip3009』(既定。通常購入の EOA ウォレットはこちらを選び、EIP-712 TransferWithAuthorization に署名する) と『erc20-transfer』(ecrecover 非対応のスマートコントラクトウォレット専用。payer_address を渡した予約にだけ提示される。extra.payerAuthorization.message を personal_sign して authorize_transfer を呼び、その成功後に表示額ぴったりの通常 ERC-20 transfer を実行し、txHash 任意/payerAddress 必須で submit_payment に渡す)。0円デモは demo_signature_version=1 と payer_address を渡すと demo-signature を提示する。送金せず personal_sign だけで完了する。全 item は
authorize_transfererc20-transfer 方式だけで、JPYC を送金する前に必ず呼ぶ。quote_checkout の選択した accept にある extra.payerAuthorization.message をウォレットで personal_sign し、その署名と reservation_id を渡す。サーバは EOA / ERC-1271 / ERC-6492 を検証して予約へ固定する。このツール自体は送金も approve も行わない。成功を確認してから accepted.amount ぴったりを transfer すること。eip3009 方式では呼ばない。
How this entry becomes a listing
For the maker. The catalogue lists what it can read, and this server publishes nothing to read yet. There are two routes, and only the first is open today.
Publish the source Open today
- Put the server's source in a public repository on github.com, with a licence.
- Keep a server.json in that repository naming this server,
com.jpyc-service/ec-storefront, and declare the repository in it:"repository": { "url": "https://github.com/owner/repo", "source": "github" }, adding"subfolder"when the server lives in a folder. - Publish that version to the official MCP registry.
- The nightly registry sweep records the declaration. This page stays, dated, and says the source is declared but not yet read.
- The catalogue reads declared repositories at a pinned commit, in batches run by hand, and lists the servers that meet the batch's rules (among them a server.json at that commit naming the server, an https endpoint and a licence). When it lists this server, this page links to the listing. There is no schedule, so no date can be promised.
List it through the maker studio Not open yet
From the official MCP registry, last updated there 86 days ago. The registry entry · ec.jpyc-service.com