How My AI Agents Learned to Talk to Each Other With A2A

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Alright, welcome to the final post in this three-part series. Let’s do a quick recap of the journey so far:

  • In Part 1, I laid out the problem with monolithic AI “brains” and designed the architecture for a specialist team of agents to power my “InstaVibe Ally” feature.
  • In Part 2, we did a deep dive into the Model Context Protocol (MCP), and I showed you exactly how I connected my Platform Interaction Agent to my application’s existing REST APIs, turning them into reusable tools.

But my agents are still living on isolated islands. My Social Profiling Agent has no way to give its insights to the Event Planner. My platform integrator can create post and event. I’ve built a team of specialists, but I haven’t given them a way to collaborate. They’re a team that can’t talk.

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