Agent2Agent (A2A) Protocol

The Agent2Agent protocol is an open standard for AI agents to discover each other and delegate tasks. Agents built by different teams or vendors can then exchange work through one common interface.

Related Terms

  • AI Agent

    An AI agent is software that wraps a language model in a loop with tools and memory so it can work toward a goal. It chooses an action, reads the result and continues until the task is done.

  • API

    An API (application programming interface) is a defined contract that lets one piece of software request data or actions from another. It hides internal details behind agreed operations, inputs and responses.

  • Agentic AI

    Agentic AI is a way of designing systems in which AI pursues a goal with some autonomy. It plans steps, calls tools and acts on results, often through several coordinated agents working inside limits people set.

  • Model Context Protocol (MCP)

    The Model Context Protocol is an open standard for connecting AI applications to tools and data sources through one common interface. A system exposed as an MCP server can be used by any client that speaks the protocol.

  • Agentic Framework

    An agentic framework is a software library for building AI agents, handling the loop of model calls, tool use, memory and control flow. It lets teams focus on the agent's task and usually adds tracing and evaluation hooks.

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