Services — the AI agent directory

Services in the directory
Service	Tags	Interfaces	Payments	Auth	Score
Agentic Commerce Protocol (ACP) Open spec from OpenAI and Stripe for agent-initiated checkout — product feeds, checkout endpoints, and scoped delegated payment tokens with the merchant staying merchant of record OpenAPIllms.txt	acp+5	OpenAPI+1	ACP	none, Payments	5/5
OpenAI API GPT-5 series models, embeddings, and the Responses API with native MCP and tool use OpenAPI	llm+5	OpenAPI	ACP+1	api-key, Models	5/5
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
Stripe Agentic Commerce Suite Shared payment tokens, agentic network tokens, and ACP support so businesses can sell through AI agents MCPOpenAPIllms.txt	agentic-commerce+4	MCP+2	ACP+3	api-key, Payments	5/5
PayPal Agentic Commerce Agent-ready checkout and payouts, an ACP payment provider, plus a remote MCP server over the PayPal APIs MCPOpenAPIllms.txt	payments+4	MCP+2	ACP	m2m-oauth, Payments	4/5
Rye Universal commerce API for agent-initiated purchases across Shopify and major retailers OpenAPI	purchasing+3	OpenAPI	ACP	api-key, Merchants	4/5
Visa Intelligent Commerce Network tokens and credentials for approved agents, plus one endpoint bridging TAP, MPP, ACP and UCP OpenAPI	bridge+7	OpenAPI	MPP+5	api-key, Payments	4/5
Etsy 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
Firmly.ai 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
Nekuda Wallet and mandate infrastructure for agentic checkout, aligned to ACP flows OpenAPI	agent-wallets+3	OpenAPI	ACP	api-key, Payments	3/5