The request names jpyc-service and ec-storefront, so the answer is about Jpyc-service: an e-commerce platform for buying and selling goods with the JPY stablecoin JPYC, offering gasless checkout and a public REST catalog API 111. As alternatives for building a storefront, Saleor is a headless, open-source GraphQL e-commerce platform 818, and Shopify provides a Storefront API and developer docs for custom storefronts 212.
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Jpyc-servicejpyc-service.comverified and signed
An e-commerce platform where goods are bought and sold in JPYC, with gasless payment and an official MCP server (com.jpyc-service/ec-storefront) that exposes a checkout action (POST /api/v1/checkout) and a public REST catalog API for browsing shops and products 111.
official:MCP server · com.jpyc-service/ec-storefront
for agents: x402 によるガスレス購入 · 商品カタログの閲覧
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Saleorsaleor.ioverified and signed
A headless, open-source, GraphQL-first e-commerce platform whose saleor-storefront skill covers the GraphQL API for products, variants, checkout and channels, for building custom storefronts 818.
+1 community tools built for it
for agents: saleor-storefront · products · getOrder
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Shopify Storefront APIshopify.devverified and signed
Shopify's developer docs and Storefront API for building custom storefronts, themes and apps, with an SDK and skills for storefront work 212.
official:SDK · @shopify/shopify-apiskill · shopify-liquidskill · shopify-custom-dataskill · shopify-use-shopify-cliskill · shopify-polaris-app-home+107 community tools built for it
for agents: Storefront API · jwt · shopify
Sources
- 1JPYCで買い物ができるECプラットフォーム | 手数料1%・ガスレス決済対応ec.jpyc-service.com · read 2026-10-29
- 2Shopify Dev Docsshopify.dev · read 2026-10-29
- 8Saleor - Composable, Open Source, Headless Ecommerce Platformsaleor.io · read 2026-10-30
- 11JPYC EC Platform: declares "x402 によるガスレス購入" (the record we read and signed)unfragile.ai · read 2026-10-24
- 12@shopify/shopify-api: declares "Storefront API" (the record we read and signed)unfragile.ai · read 2026-10-24
- 18saleor-storefront: declares "saleor-storefront" (the record we read and signed)unfragile.ai · read 2026-10-24
Left out: Pagure, because each one's own page says it is retired or discontinued.
For agents: the 10 actions behind this answer
x402 によるガスレス購入 · JPYC EC Platform verified and signed
EIP-3009 署名で JPYC を支払い、注文を確定する（POST /api/v1/checkout）。
Storefront API · @shopify/shopify-api verified and signed
shopify · @shopify/storefront-api-client verified and signed
dsql · dsql verified and signed
Deprecated compatibility redirect for Aurora DSQL guidance. Use when a request concerns DSQL, Aurora DSQL, distributed SQL, DSQL schemas, migrations, queries, authentication, performance, or application development.
msstore-cli · msstore-cli verified and signed
Microsoft Store Developer CLI (msstore) for publishing Windows applications to the Microsoft Store. Use when asked to configure Store credentials, list Store apps, check submission status, publish submissions, manage package flights, set up CI/CD for Store publishing, or integrate with Partner Cente
createCoreV1NamespacedService · Kubernetes verified and signed
create a Service
basin-store-credentials · Cloudflare API verified and signed
Store catalog credentials
paypal · paypal verified and signed
PayPal development plugin for Claude — integrate payments, subscriptions, invoices, disputes, and more using PayPal's APIs and MCP server
saleor-storefront · saleor-storefront verified and signed
Saleor e-commerce API patterns for building storefronts. Use when working with Saleor's GraphQL API, products, variants, checkout, channels, permissions, or debugging API behavior. Framework-agnostic — applies to any Saleor storefront.
essbase_manage_application · mcp found in code, not yet checked
Create, delete, copy, rename, start, or stop an Essbase application.
Labels are the instruments' verdict and are never changed by ranking. Agents and robots get this same answer as JSON at /api/v1/find?q=…&answer=1 and through the MCP server.