Bitrefill
Merchants
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.txtL402x402
Walletper-transaction
A directory of services AI agents can actually use — APIs, tools and merchants with machine-readable interfaces and agent payment protocols. Badges are probe-backed, never self-asserted.
Merchants
Storefront, Customer Account, Checkout, and Dev MCP servers plus ACP and UCP support across millions of merchants
Merchants
Open-source scheduling with a documented API for availability lookups and booking meetings
Merchants
Send physical mail and postcards over an API, payable per item over MPP
Merchants
Catalog, orders, and payments APIs for merchants, with a remote MCP server
Merchants
Pay-later and payment methods wired into agentic checkout, an early UCP adopter
Merchants
Print-on-demand production and fulfillment over a REST API
Merchants
Big-box retail inventory participating in UCP agentic shopping journeys
Same query as JSON: /api/v1/services?category=shop&has_llms_txt=true