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i dont understand how it is different from mcp. The blog just says "A2A is an open protocol that complements Anthropic's Model Context Protocol (MCP), which provides helpful tools and context to agents." There is no example or anything on how does it complement it

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It's not so much about what you _can do_ but about the messaging and posturing, which is what drives the adoption of standards as a social phenomenon.

My team's been working on implementing MCP-agents and agents-as-tools and we consistently saw confusion from everyone we were selling this into (who were already bought in to hosting an MCP server for their API or SDK) for their agents because "that's not what it's for".

Kinda weird, but kinda simple.

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