AI_SLANG_ENTRY
A2A Meaning
Agent2Agent protocol: the builder acronym for letting one AI agent discover, contact, and delegate work to another agent instead of pretending every workflow lives inside one chat box.
What does A2A mean?
Agent2Agent protocol: the builder acronym for letting one AI agent discover, contact, and delegate work to another agent instead of pretending every workflow lives inside one chat box.
A2A is a communication pattern for AI agents. It gives agents a common way to discover capabilities, exchange task information, and coordinate without sharing all of their private internals.
Origin and usage
Introduced by Google as Agent2Agent, then donated to the Linux Foundation and adopted in agent interoperability discussions alongside MCP.
Source type: product-term. Last checked: 2026-07-17.
Official open protocol term with strong builder-community usage. The entry treats A2A as shorthand for agent-to-agent interoperability rather than a guarantee that two arbitrary agents will cooperate safely.
Examples
- Use MCP for the tools and A2A when the workflow needs another agent to take a task.
- The demo said A2A, but the hard part was still deciding which agent was allowed to touch customer data.