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AI SYSTEM — Artificial Intelligence
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Agent-to-agent (A2A)

Also: Agent2Agent

An open protocol through which AI agents from different vendors communicate and hand over tasks.

While MCP connects agents with tools and data, A2A governs collaboration between agents: one agent can discover another’s capabilities, hand it a subtask and receive the result.

The protocol was introduced by Google in 2025 and later handed over to an open foundation. It aims to prevent agents from working only within a single vendor’s ecosystem.

General information, not legal or professional advice.