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Ask HN: Can someone ELI5 how Google's A2A is different from MCP?

1 pointsby tuyguntnabout 1 month ago
After reading some contents related to Google&#x27;s new A2A, it still didn&#x27;t click to me, how is it different from MCP? Can someone please ELI5 with a good example?<p>In my mind, I am still designing things with MCP. Even the communication between 2 agents can modeled as MCP with some capabilities.

2 comments

mneilabout 1 month ago
MCP (Model Context Protocol) is essentially a protocol for tool access. It defines a standard way for large language models to interact with various tools, data, and resources. Simply put, MCP enables AI to use various functionalities, much like how programmers call functions.<p>A2A (Agent-to-Agent Protocol) focuses on agent collaboration. It establishes ways for intelligent agents to discover, communicate, and cooperate with each other, allowing different AI systems to work together like human teams.<p>Taken straight from this article:<p><a href="https:&#x2F;&#x2F;a2aprotocol.ai&#x2F;blog&#x2F;a2a-vs-mcp" rel="nofollow">https:&#x2F;&#x2F;a2aprotocol.ai&#x2F;blog&#x2F;a2a-vs-mcp</a>
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bradac56about 1 month ago
The simple answer is it is Google that alone should make it easy to understand.<p>They can&#x27;t monetize a MCP API so they made A2A.