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MCP vs. A2A: why treating every agent like a tool is slowing your system down (and how to split the two) — MCP vs. A2A

This story is from 2026-09-26. It is preserved in the archive; the latest stories are on the live feed.

I spent three weeks trying to fix a latency problem that didn't exist. Our multi-agent customer support system was slow unacceptably slow, with p99 latencies hitting 14 seconds by the third hop. I blamed the models. I blamed the prompts. I blamed the framework, the network, the token counts. Then a…

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  1. 2026-09-26 22:14 · DEV Community — AI
    MCP vs. A2A: why treating every agent like a tool is slowing your system down (and how to split the two) — MCP vs. A2A

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