Google announced the Agent2Agent (A2A) protocol this morning. Like most AI hype, its announcement is more abstract than practical. On behalf of Breakthrough, here’s what we think it means for you:
A2A is an "Open" Google Protocol for AI systems to connect with one another. It creates a standardized way for AI agents to communicate and work together.
For the average user
Google wants to build an ecosystem where AI systems more seamlessly work together. Imagine asking your phone to "book me a trip to see Phish at the Sphere" or “Sell my entire Stock Portfolio if Donald Trump renews Tariffs” and having it automatically work everything out. If Google’s bet pays off, this will bring us closer to that.#
For Generative AI Power Users
A2A means sites like Github, Intuit, Datadog, and Google will soon make public Agents that your local LLM tech can patch into. You'll be able to create chains of AI capabilities where tools can ask one another what they're capable of, spin off other tool calls, ask for clarification, etc. If A2A is broadly adopted, expect more dynamic interoperation between the tools that embrace it. For those following the protocol landscape, A2A will likely operate as a resource type within the MCP ecosystem rather than competing with it—MCP has already reached critical mass as the connectivity layer. This means developers will probably wrap their A2A implementations inside MCP resources, enabling true asynchronous, bidirectional agent-to-agent communication while maintaining compatibility with existing standards.