Message Control Protocol (MCP) Reference List https://developers.googleblog.com/en/a2a-a-new-era-of-agent-interoperability/ https://dr-arsanjani.medium.com/complementary-protocols-for-agentic-systems-understanding-googles-a2a-anthropic-s-mcp-47f5e66b6486 https://www.koyeb.com/blog/a2a-and-mcp-start-of-the-ai-agent-protocol-wars