# Awesome A2A — Agent2Agent Tools, Servers & Clients

> Curated Agent2Agent (A2A) directory covering agents, servers, and client SDKs for building interoperable multi-agent systems.

## Install

Copy the content below into your project:

## Quick Use

```bash
git clone https://github.com/pab1it0/awesome-a2a
cd awesome-a2a
less README.md
```

## Intro

Awesome A2A helps you navigate the growing A2A ecosystem so you can assemble agents and services that speak a shared, interoperable protocol.

**Best for:** Multi-agent platform builders comparing A2A protocol servers/clients

**Works with:** Protocol implementations vary; use as a discovery list for your language/runtime

**Setup time:** 3–10 minutes

### Key facts (verified)

- Use the list to pick one server + one client SDK first, then validate end-to-end interoperability.
- When adopting multiple agents, standardize on a shared routing and auth model early.
- GitHub: 171 stars · 36 forks; pushed 2026-05-03 (GitHub API verified).

## Main

A2A evaluation checklist:

- Does the project document authentication and authorization clearly?
- Can it run in your deployment model (local dev, container, or managed service)?
- Does it interoperate with your existing tool protocol (MCP) or do you need bridges?


### README excerpt (verbatim)

# Awesome A2A [![Awesome](https://awesome.re/badge.svg)](https://awesome.re)

![Awesome A2A](./assets/banner.svg)

A curated list of awesome Agent2Agent (A2A) protocol servers. This repository collects and organizes A2A-compliant server implementations to help developers build interoperable AI agent systems.

* [What is A2A?](#what-is-a2a)
* [Clients](#clients)
* [Tutorials](#tutorials)
* [Community](#community)
* [Legend](#legend)
* [Server Implementations](#server-implementations)
* [Frameworks](#frameworks)
* [Utilities](#utilities)
* [Contributing](#contributing)
* [License](#license)

## What is A2A?

[A2A](https://github.com/google/A2A) (Agent2Agent) is an open protocol created by Google that enables different AI agents to communicate and collaborate with each other using a standardized interface. The protocol allows agents to discover capabilities, submit tasks for execution, monitor task progress, and receive task results in a unified way.

## Clients

AI clients that can interact with A2A servers:

* Claude from Anthropic
* Gemini from Google
* Custom A2A-compatible clients

## Tutorials

* [Getting Started with A2A Protocol](https://google.github.io/A2A/#/documentation)
* [Building Your First A2A Server](https://github.com/google/A2A/blob/main/samples/python/README.md)

## Community

* [Google A2A GitHub](https://github.com/google/A2A)

## Legend

* 🎖️ – official implementation
* programming language
  * 🐍 – Python codebase
  * 📇 – TypeScript/JavaScript codebase
  * 🏎️ – Go codebase
  * 🦀 – Rust codebase
  * #️⃣ - C# Codebase
  * ☕ - Java codebase
* scope
  * ☁️ - Cloud Service
  * 🏠 - Local Service
  * 📟 - Embedded Systems
* operating system
  * 🍎 – For macOS
  * 🪟 – For Windows
  * 🐧 - For Linux

> [!NOTE]
> Confused about Local 🏠 vs Cloud ☁️?
> * Use local when A2A server is talking to a locally installed software.
> * Use cloud when A2A server is talking to remote APIs, like Google Maps API.

## Server Implementations

* 🎖️ - [Official Samples](#official-samples)
* 🗺️ - [Location Services](#location-services)
* 💼 - [Business Tools](#business-tools)
* 🖼️ - [Image Generation](#image-generation)
* 💱 - [Financial Services](#financial-services)
* 🔎 - [Search & Data Extraction](#search-and-data-extraction)
* 💬 - [Communication Services](#communication-services)
* 🔄 - [Integration Services](#integration-services)
* 🛠️ - [Developer Tools](#developer-tools)
* 🧠 - [Knowledge Services](#knowledge-services)
* 📊 - [Data Services](#data-services)
* 🚆 - [Travel & Transportation](#travel-and-transportation)

### FAQ

**Q: What is A2A here?**
A: It refers to Agent2Agent protocol implementations and ecosystem components listed in the repo.

**Q: Is it compatible with MCP?**
A: They are different surfaces; you may need a bridge if you want one stack to expose both.

**Q: How do I start?**
A: Pick one server and one SDK in your preferred language and build a minimal ping/route demo.

## Source & Thanks

> Source: https://github.com/pab1it0/awesome-a2a
> License: MIT
> GitHub stars: 171 · forks: 36

---

<!-- ZH -->

## 快速使用

```bash
git clone https://github.com/pab1it0/awesome-a2a
cd awesome-a2a
less README.md
```

## 简介

Awesome A2A 帮你快速了解 A2A 生态，便于挑选能互操作的 agents 与服务，把多 Agent 系统拼起来。

**最适合：** 在对比 A2A 协议服务器/客户端的多 Agent 平台开发者

**适配：** 不同实现差异较大；可作为按语言/运行时筛选的发现清单

**配置时间：** 3–10 分钟

### 关键事实（已验证）

- 建议先选 1 个 server + 1 个 client SDK，跑通端到端互操作后再扩展。
- 多 agent 场景要尽早统一 routing 与 auth 模型，避免后期迁移成本。
- GitHub：171 stars · 36 forks；最近更新 2026-05-03（GitHub API 验证）。

## 正文

A2A 评估清单（建议逐项过一遍）：

- 是否清晰说明认证/授权？
- 是否符合你的部署形态（本地、容器、或托管）？
- 能否与现有工具协议（MCP）互通？是否需要桥接层？


### README 原文节选（verbatim）

# Awesome A2A [![Awesome](https://awesome.re/badge.svg)](https://awesome.re)

![Awesome A2A](./assets/banner.svg)

A curated list of awesome Agent2Agent (A2A) protocol servers. This repository collects and organizes A2A-compliant server implementations to help developers build interoperable AI agent systems.

* [What is A2A?](#what-is-a2a)
* [Clients](#clients)
* [Tutorials](#tutorials)
* [Community](#community)
* [Legend](#legend)
* [Server Implementations](#server-implementations)
* [Frameworks](#frameworks)
* [Utilities](#utilities)
* [Contributing](#contributing)
* [License](#license)

## What is A2A?

[A2A](https://github.com/google/A2A) (Agent2Agent) is an open protocol created by Google that enables different AI agents to communicate and collaborate with each other using a standardized interface. The protocol allows agents to discover capabilities, submit tasks for execution, monitor task progress, and receive task results in a unified way.

## Clients

AI clients that can interact with A2A servers:

* Claude from Anthropic
* Gemini from Google
* Custom A2A-compatible clients

## Tutorials

* [Getting Started with A2A Protocol](https://google.github.io/A2A/#/documentation)
* [Building Your First A2A Server](https://github.com/google/A2A/blob/main/samples/python/README.md)

## Community

* [Google A2A GitHub](https://github.com/google/A2A)

## Legend

* 🎖️ – official implementation
* programming language
  * 🐍 – Python codebase
  * 📇 – TypeScript/JavaScript codebase
  * 🏎️ – Go codebase
  * 🦀 – Rust codebase
  * #️⃣ - C# Codebase
  * ☕ - Java codebase
* scope
  * ☁️ - Cloud Service
  * 🏠 - Local Service
  * 📟 - Embedded Systems
* operating system
  * 🍎 – For macOS
  * 🪟 – For Windows
  * 🐧 - For Linux

> [!NOTE]
> Confused about Local 🏠 vs Cloud ☁️?
> * Use local when A2A server is talking to a locally installed software.
> * Use cloud when A2A server is talking to remote APIs, like Google Maps API.

## Server Implementations

* 🎖️ - [Official Samples](#official-samples)
* 🗺️ - [Location Services](#location-services)
* 💼 - [Business Tools](#business-tools)
* 🖼️ - [Image Generation](#image-generation)
* 💱 - [Financial Services](#financial-services)
* 🔎 - [Search & Data Extraction](#search-and-data-extraction)
* 💬 - [Communication Services](#communication-services)
* 🔄 - [Integration Services](#integration-services)
* 🛠️ - [Developer Tools](#developer-tools)
* 🧠 - [Knowledge Services](#knowledge-services)
* 📊 - [Data Services](#data-services)
* 🚆 - [Travel & Transportation](#travel-and-transportation)

### FAQ

**这里的 A2A 指什么？**
答：指 Agent2Agent 协议的实现与周边生态组件，仓库里做了汇总。

**和 MCP 兼容吗？**
答：两者是不同的工具面；如果要同时暴露两种能力，可能需要桥接层。

**怎么开始？**
答：在你常用语言里挑一个 server 和一个 SDK，先做最小的 ping/route demo。

## 来源与感谢

> Source: https://github.com/pab1it0/awesome-a2a
> License: MIT
> GitHub stars: 171 · forks: 36


---
Source: https://tokrepo.com/en/workflows/awesome-a2a-agent2agent-tools-servers-clients
Author: Agent Toolkit