# A2A Pay > Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for cosmetics. A2A Cosmetics is the agentic commerce hub for cosmetics in 18 markets. Eighteen markets, thirteen rule sets. The Agent-to-Agent (A2A) surface for cosmetics, served over the Model Context Protocol (MCP) — the record, a registry for security, and x402 to pay on it. AI agents for brands, manufacturers, retailers and distributors. Business to business. One page: the five rails in plain words, each with its door. x402 is live. The Machine Payments Protocol, the Universal Commerce Protocol and the Agentic Commerce Protocol are built and dark until they can settle. The Agent Payments Protocol sits on the Agent Card. Notice: Artificial intelligence makes mistakes. A2A Cosmetics is an information source, not a recommendation. Rules differ by jurisdiction — refer to the regulator in your jurisdiction for the information that applies to you. Operator: GreenCore Solutions Corp. · Surface: https://a2a-pay.ai · version 1.0.0 · as of 2026-09-20 · family hub https://a2a-cosmetics.ai ## Resources - https://a2a-pay.ai/ — The five rails, each with its door - https://a2a-pay.ai/.well-known/agent-card.json — signed Agent Card - https://a2a-pay.ai/.well-known/jwks.json — keyring (kid a2ac-2026-09) - https://mcp.a2a-cosmetics.ai/mcp — the family's MCP door