A2A Course #1 - A2A Protocol - Complete Overview

We take a deep dive into the A2A (Agent-to-Agent) protocol and how it works in harmony with MCP (Model Context Protocol) and ADK (Agent Development Kit) to enable powerful collaboration between AI agents across organizational and technological boundaries.

GitHub Repos - Please Subscribe, allow pop-ups and then login to The AI Language website to access our GitHub Repos. Access is available only to our YouTube subscribers -

https://theailanguage.com/onlySubscribers?id=a2a_samples&site=github

Join us as we build the Agents with MCP and A2A in upcoming videos.

Happy building! ☺️

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Udemy Course (get completion certificate, practice questions, Q&A) https://www.udemy.com/course/modelcontextprotocol/?referralCode=6FADE0F85C5DB97203C6

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Chapters -

00:00 Introduction

01:06 Background - what are LLMs, Agents & MCP

03:23 Why A2A? MCP vs ADK vs A2A

05:32 A2A Lifecycle and Core Components

05:52 A2A Discovery - A2A Client, A2A Server & Agent Card

08:16 A2A Initiation - Tasks, Messages, Parts

10:10 A2A Processing - Artifacts, Streaming, Push Notifications, Non-streaming

11:52 A2A Interaction - input-required state

12:14 A2A Completion

12:31 Summary

In this video, we take a deep dive into the A2A (Agent-to-Agent) protocol and how it works in harmony with MCP (Model Context Protocol) and ADK (Agent Development Kit) to enable powerful collaboration between AI agents across organizational and technological boundaries.

💡 Whether you're a programmer, a data scientist, or a technically curious builder — this video will walk you through:

✅ What is a Large Language Model (LLM)

✅ What is an Agent Framework

✅ How agents collaborate locally and globally

✅ Why we need A2A to connect agents across systems

✅ A complete breakdown of A2A’s components: client, server, agent card, messages, parts, tasks, and artifacts

✅ The lifecycle of an A2A task — initiation, streaming, push notifications, interaction, and completion

🔗 Subscribe now to get free access to our full MCP, A2A, and ADK codebases and tutorials.

📥 Links to the code and agent templates are in the description below.

➕ Stay tuned for upcoming videos where we build agents step-by-step using the Agent Development Kit (ADK).

👇 Let’s connect the world of intelligent agents — one protocol at a time.