Orchestration

AG2 (formerly AutoGen): The Open-Source AgentOS by Microsoft. Features native A2A support with A2aAgentServer and A2aRemoteAgent built-in classes for multi-agent conversations.

Official A2A python sample agent: Airbnb Planner Multiagent

Official A2A python sample agent: Any Agent Adversarial Multiagent

Official A2A python sample agent: Birthday Planner Adk

Elkar - Task management for AI Agents, ready for Agent2Agent (A2A) protocol

A2A-Native AI Agent Platform written in Go

AgentX python SDK. Build multi-agent AI workforce.

Adds nodes to n8n for interacting with AI agents using Google's Agent2Agent (A2A) protocol. Send tasks, manage interactions, and process results from A2A-compatible agents within your workflows.

Cognisphere ADK is an AI agent development framework built on Google's Agent Development Kit (ADK)

kbs_agent_a2a 智能体协议适配中间件

A community-driven, open-source directory of live, hosted AI agents using the A2A Protocol

A example A2a Server with Human-In-The-Loop feature.

Multi-agent solution on Azure Container Apps with Google Agent2Agent

🐇 The 'RabbitHole' framework provides the tools for asynchronous A2A communication and task management. 📡🐇 ✨ Build powerful AI agents that communicate and collaborate.

AgentX Javascript/Typescript SDK. Build multi-agent AI workforce.

Agent-to-agent task marketplace where agents post tasks, pick up work, and earn credits. Live at pinchwork.dev.

SDK to build Agents in rust. Build and manage complex, self-correcting agent teams. Launch multi-agent systems via configuration files or using an Agent Factory. It's the robust framework for orchestrating intelligent agents using open standards (MCP, A2A).

Production-ready AMQP adapter for A2A protocol enabling distributed task processing, event sourcing with LavinMQ streams, and horizontal worker scaling.

About Pure java implementation of Google A2A protocol. This project demonstrates how to build an A2A-compliant multi-agent system using Spring Boot, Ollama, and the Agent-to-Agent (A2A) protocol. The architecture is based on a Parent Agent that orchestrates multiple Child Agents (e.g., Order Agent, Seller Agent).

Run multiple agents on single A2A Server

An Open-Source, Decentralized Marketplace for AI Agents. Enables A2A Collaboration, Discovery, and Interoperability for Multi-Agent Systems (MAS) and LLM Agents

Multi-agent-driven GenerativeUI

Google A2A protocol demo where a CLI client works with a scheduling agent, which in turn coordinates three specialized player agents to arrange a Table Tennis game.

A multi-gent system that provides comprehensive financial and corporate intelligence for publicly traded companies.

Recipes for scalable, streaming-first multi-agent systems in cloud. It combines A2A protocol, OpenAI Agents SDK, and Dapr building blocks (PubSub + Virtual Actors) to show how AI agents can stream outputs and coordinate at scale.

Vertex AI Agent Engine command template using Google ADK + A2A protocol. Zero-legacy scaffold with Terraform modules, strategic orchestration tool, and CI/CD pipeline.

A safety-first multi-agent mental health companion with real-time distress tracking, triple-layer guardrails, and evidence-based grounding techniques. Built for Kaggle × Google Agents Intensive 2025 Capstone (Agents for Good Track)

A multi-agent e-commerce system built with Google ADK and MCP. Features microservice architecture with A2A protocol communication, enabling customer consultation, real-time inventory lookup, and automated order processing.

SNAP - Signed Network Agent Protocol. Secure agent-to-agent (A2A) communication with cryptographic identity, built on Bitcoin Schnorr signatures and Nostr.

This is a beginner friendly repo showing how to build multi-agent AI systems using the A2A protocol.

U.S. governance-inspired coordination strategies in multi-agent AI systems

An educational demonstration of Google's Agent-to-Agent (A2A) protocol v1 through a multi-agent storytelling system. Three AI agents collaborate iteratively to adapt and enhance stories, showcasing real-world A2A communication patterns.

The open-source event bus for AI agents. Webhooks in. Agent actions out.

Production-grade multi-agent system that analyzes stocks using 6 specialized AI agents communicating via the Agent-to-Agent (A2A) protocol.

🤖 Curiosity Squad – Autonomous Multi-Agent Mars Exploration - Capstone Project

Google-ADK

Multi-agent system built on the A2A (Agent-to-Agent) protocol that demonstrates distributed agent coordination for scheduling football games.

Multi-agent ops template: A2A protocol + Agent Cards + task delegation + OpenTelemetry observability

Multi-protocol transport layer: MCP, A2A, ACP adapters