AP2 MCP Server Integration

Before writing code

Fetch live docs:

1. Fetch https://ap2-protocol.org/specification/ for MCP server references
2. Fetch https://ap2-protocol.org/topics/ap2-a2a-and-mcp/ for MCP integration details
3. Fetch https://ap2-protocol.org/roadmap/ to check MCP server availability status
4. Web-search site:github.com google-agentic-commerce AP2 MCP server for MCP implementations

Conceptual Architecture

AP2 + MCP

While AP2's primary integration is with A2A (agent-to-agent), it also integrates with MCP (Model Context Protocol) for tool-based access to payment capabilities:

• A2A — Agent-to-agent: Shopping Agent ↔ Merchant Agent communication
• MCP — Agent-to-tool: Agent accessing payment APIs as tools