A2A directory

Every measured A2A repository, most followed first. Each entry carries its measured history, licence and maintenance status.

Back to the ecosystem figures

A2A directory

ProjectStarsLanguageCreated
agentic-kernelsource codeA flexible foundation AI system for creating A2A-compatible autonomous AI agents that can collaborate, reason,…14Python2025-04-02
a2a-gosource codeGo implementation of the Agent-to-Agent (A2A/a2a) protocol14Go2025-07-01
A2CNsource codeOpen protocol for agent-to-agent B2B commercial negotiation. Specification, reference implementation, and SDK.13Python2026-03-25
agentclisource codeLLM agent running on your local PC, Compatible with various LLM models. Can do anything.13Python2026-02-11
cpexsource codeA policy enforcement runtime for AI agents13Rust2025-12-18
agentic-ai-nanosource codenano-degree in Agentic AI13Python2025-08-17
hashnet-mcp-jssource codeUniversal MCP Server for finding + connecting to agents anywhere on the planet. https://hol.org/mcp13TypeScript2025-11-11
Istarasource codeAgentic Research Orchestration for UX Research and Product Development. Vibe and handcoded by a social and…13Python2026-03-14
openagentiosource codeConnect agents across runtimes, frameworks, and teams.13Python2026-05-02
sint-protocolsource codeOpen-source runtime security and governance for AI agents, MCP tools, robotics, industrial automation, and…13TypeScript2026-03-17
clisource codeAn interactive command-line interface that uses the Agent2Agent (A2A) & Model Context Protocols (MCP) to…13not reported2025-10-02
x402-erc8004-agentsource codeAI agent stack that combines A2A messaging + x402 micropayments + ERC‑8004 identity(trustless agent).13TypeScript2026-01-26
kbs_agent_a2asource codekbs_agent_a2a 智能体协议适配中间件13Python2025-04-20
buildaharnesssource codeA visual harness builder for ai agents12TypeScript2026-05-13
AgentX-mcp-serverssource codeList of open sourced MCP servers. MIT license. Managed by AgentX with love.12not reported2025-06-06
SWE-Squadsource codeAutonomous Software Engineering Agents — self-healing, self-diagnosing development team powered by Claude Code…12Python2026-03-17
capsule-agentssource codeContainerized A2A-native agents with simple setup12TypeScript2025-04-23
a2a-uisource codeRepo migrated to a2a-community ogranization https://github.com/a2a-community/a2a-ui12TypeScript2025-04-15
OctoMatrixsource code🐙 A self-hosted AI Agent companion. Powered by persistent memory (GHOST) to remember, learn, and evolve as…12Python2026-05-02
ottoflowsource codeAI Workflows For Kubernetes12Go2026-08-20
aeamcpsource codeSolana Protocol Design for Agent and MCP Server Registries12HTML2025-05-23
aws-orchestrator-agentsource codeStop writing Terraform by hand. A multi-agent framework that researches, generates, validates, and commits…12Python2025-10-14
a2asource codeAgent2Agent (A2A) protocol implementation in Ruby. Under development. It will be integrated with web…12Ruby2025-04-09
agentsporesource codePlatform where AI agents autonomously build, review and deploy real software. Connect any LLM agent over HTTP…11Python2026-02-24
a2asource codeAzure-native A2A Technology Demonstrator11Python2025-07-10
gocrewwaisource codeThe enterprise-grade CrewAI alternative for Go. Orchestrate strictly-typed, parallel AI agents with…11Go2026-03-07
github-issue-creatorsource codeMulti-agent system for drafting and managing GitHub issues. Built with BeeAI Framework, integrated via GitHub…11Python2025-08-25
chambersource codeGenesis Mind Interface — desktop chat UI for Genesis agents11TypeScript2026-04-08
agentic-sandboxsource codeSelf-hostable runtime for persistent autonomous coding agents — KVM-isolated VMs (or rootless containers),…11Rust2026-04-06
a2a-validation-toolsource codeAgent 2 Agent (A2A) Validation tool (a2v) alternative to CLI11JavaScript2025-05-12
A2A_ADK_MCPsource codeMulti-Agent Systems with Google's Agent Development Kit + A2A + MCP11Python2025-04-24
examplessource codeSample Agents and Tools for Rossoctl platform11Python2025-04-17
agentweavesource codeKnowledge-, capability-, and trust-aware framework for discovering, validating, selecting, and orchestrating…11Python2026-08-15
wiresource codeagent-to-agent comms, no vendor in the middle — telephone-exchange protocol for AI agents. wire dial / wire…11Rust2026-05-10
kudosflowsource codeVisual workflow editor for building node-based AI agent workflows with drag-and-drop interface, A2A…10TypeScript2025-04-09
a2a-itsource codeA example A2a Server with Human-In-The-Loop feature.10TypeScript2025-09-02
buywhere-mcpsource codeBuyWhere MCP server — search 300M+ products across US, Singapore & SEA via Model Context Protocol. Agents…10TypeScript2026-04-16
tclksource codeHTLC/PTLC deal-making for agents that meet in a chat room — offer, accept, lock, reveal, refund, as signed…10TypeScript2026-09-01
multi_agent_acasource codeMulti-agent solution on Azure Container Apps with Google Agent2Agent10Python2025-07-12
cognevasource codeDistributed AI multi-agent autonomous system — digital employees for long-horizon tasks, running 24×7 —…10Rust2026-07-26
perception-with-intentsource codeAI-powered news intelligence with 8 Vertex AI agents monitoring 50+ sources. Real-time executive dashboard,…10Python2025-10-30
gitlab-apisource codeGitLab MCP Server and Python API Wrapper10Python2022-10-31
Morganasource codeA magical witch assistant equipped with an enchanted grimoire powered by AI, yet shaped by you: your agents,…10C#2025-12-04
persona-agentsource codeA Python-based API server for creating AI persona agents using Google A2A protocol and Model Context Protocol…10Python2025-03-10
health-agents-collectivesource codeA2A implementation in Healthcare10Python2025-09-06
a2a-projectsource codeExplore MCP and A2A protocols with hands-on client/server implementations, UI integration, cloud deployment,…10not reported2025-07-30
plaitedsource codeFramework for sovereign agent nodes, A2A modnets, generative UI, and behavioral runtime provenance.10TypeScript2022-11-26
agent-video-attestationsource codeAVAP — Agent Video Attestation Protocol: signed, blockchain-anchored agent-to-agent information transfer…10Python2026-06-19
ziransource code自然 ZIRAN is an open-source security testing framework for AI agents. It discovers dangerous tool chain…10Python2026-02-09
a2abridgesource codeOne open A2A 1.0 mesh for Claude Code, Codex, Cursor, Cline, Continue and Gemini.10Go2026-05-09
RabbitHolesource code🐇 The 'RabbitHole' framework provides the tools for asynchronous A2A communication and task management. 📡🐇 ✨…10Python2025-05-16
awesome-agentssource codeCurated directory of AI agents, agent cards, runtime endpoints, container images, and contribution-ready…10JavaScript2026-06-07
galdorsource codeA Go-native framework for LLM agents, with OpenTelemetry observability built in.10Go2026-05-17
agent2agent_docsource codeAgent2Agent (A2A) Docs – Your comprehensive guide to understanding and implementing the A2A protocol.9TypeScript2025-04-14
apflowsource code**AI-Perceivable Distributed Orchestration** apflow is a distributed task orchestration engine where every…9Python2025-11-19
AI_Agent_Schoolsource codeAn interactive educational platform for understanding AI agents9TypeScript2025-06-26
agent-2-agentsource codeCross-model adversarial code review for Claude Code. Claude-written code gets reviewed by Codex; Codex-written…9Shell2026-03-11
distrisource codeDistri is A2A compatible OpenClaw like agent framework built in Rust.9Rust2025-10-31
agent-meshsource codeA gateway + skill letting Claude Code agents collaborate across machines9TypeScript2026-05-09
cyber-ai-teamsource codeSelf-hosted AI company OS for solo founders: autonomous agents, ERPNext business memory, and owner-visible…9Python2026-07-08