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The A2A protocol: how it works, step by step, and how it compares with MCP

AI systems are no longer just a single model answering questions. We now build specialised agents (an HR agent, a booking agent, a code-review agent), often developed by different teams, on different frameworks (LangGraph, CrewAI, ADK, OpenAI Agents SDK…), and hosted by different providers. That ra…

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  1. 2026-11-05 08:28 · DEV Community — AI
    The A2A protocol: how it works, step by step, and how it compares with MCP

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