 Gift cards, phone top-ups, and eSIMs bought over an eCommerce MCP server, payable with x402 or L402 — no account, no card on file MCPOpenAPIllms.txt | gift-cards+5 | MCP+2 | L402+1 | wallet, Merchants | 5/5 | | |
 Storefront, Customer Account, Checkout, and Dev MCP servers plus ACP and UCP support across millions of merchants MCPOpenAPIllms.txt | commerce+5 | MCP+2 | ACP+2 | m2m-oauth, Merchants | 5/5 | | |
 Flights, stays, and ancillaries — search, book, pay, and manage orders from one travel API OpenAPI | travel+3 | OpenAPI | — | api-key, Merchants | 4/5 | | |
 Send physical mail and postcards over an API, payable per item over MPP OpenAPIllms.txt | mail+3 | OpenAPI+1 | MPP | api-key, Merchants | 4/5 | | |
 Universal commerce API for agent-initiated purchases across Shopify and major retailers OpenAPI | purchasing+3 | OpenAPI | ACP | api-key, Merchants | 4/5 | | |
 Catalog, orders, and payments APIs for merchants, with a remote MCP server MCPOpenAPIllms.txt | commerce+4 | MCP+2 | — | m2m-oauth, Merchants | 4/5 | | |
 Purchasing API that places, tracks, and returns orders at Amazon, Walmart, Target, and Best Buy on behalf of agents OpenAPI | purchasing+3 | OpenAPI | — | api-key, Merchants | 4/5 | | |
 Marketplace of handmade and vintage goods, an early agentic-checkout partner and UCP collaborator OpenAPI | marketplace+3 | OpenAPI | ACP+1 | m2m-oauth, Merchants | 3/5 | | |
 Agentic checkout that makes any digital surface shoppable while the merchant stays merchant of record OpenAPI | checkout+3 | OpenAPI | ACP | api-key, Merchants | 3/5 | | |
 Pay-later and payment methods wired into agentic checkout, an early UCP adopter OpenAPIllms.txt | payments+3 | OpenAPI+1 | UCP | api-key, Merchants | 3/5 | | |
 Domain registration, transfers, and DNS management over API OpenAPI | domains+2 | OpenAPI | — | api-key, Merchants | 3/5 | | |
 Print-on-demand production and fulfillment over a REST API OpenAPIllms.txt | print-on-demand+2 | OpenAPI+1 | — | api-key, Merchants | 3/5 | | |
 Retail catalog and fulfillment reachable to agents through UCP-aligned commerce surfaces OpenAPI | retail+3 | OpenAPI | UCP | api-key, Merchants | 3/5 | | |