Services — the AI agent directory

Services in the directory
Service	Tags	Interfaces	Payments	Auth	Score
Shopify 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
Klarna 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
Target Big-box retail inventory participating in UCP agentic shopping journeys llms.txt	retail+2	llms.txt	UCP	api-key, Merchants	2/5