What is Awesome A2A — Agent-to-Agent Ecosystem Directory?

Curated collection of A2A Protocol resources — official samples, SDKs for 5 languages, framework integrations, community implementations, and tutorials. The go-to directory for A2A adoption. MIT.

Is Awesome A2A — Agent-to-Agent Ecosystem Directory free to use?

Yes. Awesome A2A — Agent-to-Agent Ecosystem Directory is freely available on TokRepo. Check the Source & Thanks section on the asset page for the specific open-source license.

How do I install Awesome A2A — Agent-to-Agent Ecosystem Directory?

Visit the asset page on TokRepo and click "Copy for agent" to get the installation instructions. Most assets can be installed with a single command.

Awesome A2A — Agent-to-Agent Ecosystem Directory

Awesome A2A is the go-to curated directory for Google's Agent-to-Agent (A2A) Protocol ecosystem, with 550+ GitHub stars and MIT license. It covers official specifications, SDKs for 5 programming languages (Python, TypeScript, Java, Go, .NET), 40+ official sample implementations, 15+ community SDKs, framework integrations (LangChain, CrewAI, AutoGen), and tutorials. As A2A adoption accelerates alongside MCP, this directory helps developers navigate the rapidly growing ecosystem of agent interoperability tools.

Best for: developers adopting the A2A protocol who need to find SDKs, samples, and integration guides. Covers: official resources, SDKs, frameworks, community projects, tools, tutorials. Updated: community-driven.

Awesome A2A — Resource Guide

Official Resources

A2A Specification — Full protocol definition at a2a-protocol.org
Official SDKs — Python, TypeScript, Java, Go, .NET
40+ Official Samples — Working implementations across all languages
A2A Blog — Protocol updates and announcements

SDKs by Language

Language	Package	Maintainer
Python	a2a-sdk	A2A Project (official)
TypeScript	@a2a-js/sdk	A2A Project (official)
Java	a2a-java	A2A Project (official)
Go	a2a-go	A2A Project (official)
.NET	A2A	A2A Project (official)
Rust	a2a-rs	Community
Elixir	a2a_ex	Community
PHP	a2a-php	Community

Framework Integrations

LangChain + A2A — Build LangChain agents that communicate via A2A
CrewAI + A2A — Multi-agent crews with A2A interoperability
AutoGen + A2A — Microsoft's framework with A2A support
Google ADK + A2A — Native A2A support in Google's Agent Dev Kit
Mastra + A2A — TypeScript framework integration

Sample Categories

Category	Count	Description
Basic Agents	10+	Hello world and simple agent examples
Multi-Agent	8+	Collaborative agent systems
Enterprise	5+	Production patterns and security
Research	5+	Academic and research implementations
Integrations	12+	Framework-specific examples

A2A + MCP Together

Many resources show how to use A2A and MCP together:

Agent uses MCP to connect to tools (databases, APIs, files)
Agent uses A2A to communicate with other agents
Both protocols work simultaneously in the same agent

FAQ

Q: What is Awesome A2A? A: A curated directory of resources for Google's Agent-to-Agent Protocol — SDKs, samples, framework integrations, tools, and tutorials across 5+ programming languages.

Q: Is it free? A: Yes, MIT license. All linked resources have their own licenses (mostly Apache 2.0 or MIT).

Q: How does A2A relate to MCP? A: MCP = agent-to-tool connection. A2A = agent-to-agent communication. Use both for full interoperability.