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Glossary: Multi-Agent Systems

A2A (Agent2Agent protocol)

Also written: A2A, Agent2Agent protocol, Agent2Agent

An open protocol that lets one agent work with another agent, possibly built by another company on another framework. The agents exchange messages and tasks without sharing their internals.

Where the book teaches it

Related terms

Agent CardMCP (Model Context Protocol)Task (A2A)Parts and artifacts (A2A)