Context Engineering for AI
5 agent architecture scenarios: assess MCP vs A2A

5 agent architecture scenarios: assess MCP vs A2A

7/22/2026 · Redis

What this post added

This post analyzes five agent architecture scenarios to determine the applicability of MCP and A2A protocols. It details how MCP is used for agent-to-tool integration and A2A for agent-to-agent collaboration, providing specific examples for each scenario. The post also delves into the security implications of each protocol, noting MCP's current limitations in authorization and A2A's stronger focus on identity and transport-layer security. It concludes that protocols should be adopted based on the specific boundaries being crossed rather than trending popularity.

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