A2A Protocol Technical Documentation
Tutorial Guide
Python Quickstart Tutorial

Python Quickstart Tutorial

Python Quickstart Tutorial

Welcome to the Python development tutorial for the A2A Protocol! This is a complete hands-on guide that takes you from zero to a functional A2A agent.

🎯 Overview

You’ll start by building a simple “echo” A2A server, then progressively learn core A2A concepts and eventually reach advanced development patterns such as integrating an LLM.

Learning objectives

  • Understand key A2A concepts and components
  • Learn A2A development using the Python SDK
  • Design agent skills and AgentCards
  • Implement core A2A server logic
  • Understand client–server interaction patterns
  • Learn how streaming and multi-turn conversation work
  • Explore LLM integration approaches

📚 Chapters

Fundamentals

  1. Introduction

    • What you’ll build and what you’ll learn
    • Tech stack overview
    • Prerequisites

  2. Environment setup

    • Python environment configuration
    • Installing the A2A SDK
    • Tooling recommendations

  3. Agent skills and AgentCard

    • Defining agent skills
    • Creating an AgentCard
    • Service discovery basics

Practice

  1. Agent executor

    • Executor logic
    • Task handling
    • Error handling strategies

  2. Start the server

    • Server configuration and startup
    • Endpoint implementation
    • Debugging and monitoring

  3. Client interaction

    • Implementing a client
    • Sending requests and handling responses
    • Testing and validation

Advanced

  1. Streaming and multi-turn

    • Implementing streaming
    • Managing multi-turn conversations
    • LangGraph integration example

  2. Next steps

    • Advanced directions
    • Production deployment
    • Community resources

🛠️ Requirements

System requirements

  • Python 3.10+
  • 4GB+ RAM
  • Network access (to download dependencies)

Development tools

  • Code editor (VS Code recommended)
  • Terminal/command line
  • HTTP testing tools (curl/Postman)

Core dependencies

  • A2A Python SDK
  • FastAPI (web framework)
  • Pydantic (validation and serialization)
  • Uvicorn (ASGI server)

📈 Learning paths

🚀 Fast track (experienced developers)

  1. Skim the introduction
  2. Complete environment setup
  3. Focus on agent skills and AgentCard
  4. Jump to streaming and multi-turn

📚 Full path (newcomers)

  1. Follow chapters in order
  2. Run every code sample
  3. Complete exercises and experiments
  4. Make sure you understand each concept

🎯 Project-driven path (real-world implementation)

  1. Define your project needs and goals
  2. Deep-dive only relevant chapters
  3. Follow best practices and reference examples
  4. Build a prototype and iterate

🔗 Related resources

Official resources

Community resources

Further learning

Ready to start? Begin with the tutorial introduction.