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

4. Agent executor

   • Executor logic
   • Task handling
   • Error handling strategies

5. Start the server

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

6. Client interaction

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

Advanced

7. Streaming and multi-turn

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

8. 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

• A2A GitHub repository
• Protocol specification
• API reference

Community resources

• Developer forum
• Sample code

Further learning

• Core topics
• Enterprise features
• A2A vs MCP

Ready to start? Begin with the tutorial introduction.