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
agent-a2a-protocol-semantic-kernelsource codeA2A (Agent-to-Agent) 🤖🤝🤖 protocol implementation using Semantic Kernel 🛠️(unofficial: Azure OpenAI)1Python2025-04-16
agent-to-agent-mssource codeAgent-to-agent interaction examples 🤖➡️🤖 across multiple platforms and libraries in Microsoft1not reported2025-06-17
.nexussource codeThe distributed Agentic Post Office - .nexus is a local-first, governance-bound communication platform for AI…1PowerShell2026-08-08
opentagsource codeOpen-source, cloud-native infrastructure for Claude Tag-style shared AI teammates in Slack — extensible,…1Go2026-06-27
adguard-home-agentsource codeAdGuard Home Agent / MCP1Python2026-02-08
agent-terminal-uisource codeAgent CLI Terminal for Agent Utilities1Python2026-04-02
archivebox-apisource codeArchiveBox API and MCP Server1Python2025-10-21
langfuse-agentsource codeLangfuse Agent loads Langfuse MCP and Pydantic Graph1Python2026-03-29
owncast-agentsource code1Python2026-03-29
qbittorrent-agentsource codeQBittorrent Agent built on Pydantic Graph and QBittorrent MCP1Python2026-03-29
agentworldsource codeA sealed world where AI agents register as citizens, build together, and vote on changes to their own source…1TypeScript2026-08-22
x402-mcpsource codex402 USDC micropayments MCP + A2A storefront on Base — city compliance, agent discovery, payTo funding1Python2026-07-08
DeepSeek-Infrasource codeLocal-first Agentic AI Infrastructure Platform with LLM Gateway, Agent DAG Runtime, MCP Tool Hub, A2A Agent…1Python2026-06-04
AI-Engineersource codeNotes on gen AI concepts and tools. POC on agentic AI with MCP, A2A, langGraph, langchain, openAI LLM, crewAI1JavaScript2025-06-29
lnmp-protocolsource codeLNMP – A protocol that carries meaning, enabling efficient and semantically consistent communication between…1Rust2025-11-17
lnmp-sdk-jssource codeTypeScript/JavaScript SDK for the LNMP (LLM Native Minimal Protocol): parsing, encoding, routing, embeddings,…1JavaScript2025-11-17
JonLinkersource codeAgent-to-agent job search — autonomous resume delivery, recruiter conversation, and follow-up across LinkedIn…1TypeScript2026-04-22
broke2built-skills-mcpsource codeMCP server: 27 live data skills for AI agents (email/DNS/domain intel, SEO & security audits, content…1JavaScript2026-07-18
camel-a2a-morning-routinesource codeA2A protocol demo with Apache Camel: 7 agents showcasing async tasks, SSE streaming, push notifications, and…1JavaScript2026-06-02
agentupsource codeEnhance your AI coding assistant by injecting curated design patterns, best practices, and architecture…1not reported2026-03-21
ai-agent-controlplane-demosource codeIBM Bob × ContextForge — a turnkey demo of the AI agent control plane: a governed MCP/A2A fintech mesh (OPA…1Python2026-06-04
grok-agent-storesource codeAgent-only Grok skill marketplace — remote MCP + REST. Live:…1TypeScript2026-07-15
a2asource codeAgent2Agent go implementation1Go2025-04-15
awesome-agent-collaborate-toolssource codeA curated list of tools for AI agent-to-agent communication, coordination, and collaboration1not reported2026-04-02
masumi-identity-sdksource codeTypeScript SDK for decentralized agent identity on Masumi — KERI AIDs, Verifiable Credentials, and A2A…1TypeScript2026-04-20
Langdock-A2A-Demosource codeThis is a sample A2A Agent server which wraps the Langdock Agent API1TypeScript2026-01-30
agent-arenasource codeA fully local AI environment where two (or more) LLM agents debate, argue, collaborate, or meltdown in real…1Python2025-12-01
a2a-bridge-mcpsource codeMCP server for agent-to-agent communication — capability discovery, task delegation, and result aggregation…1JavaScript2026-04-23
swarm-at-ledgersource codePublic settlement ledger for swarm.at — 901 hash-chained entries, 76 types1Python2026-02-07
dsh-a2a-serversource codeA2A server bridge plugin for DeepSeek Harness1TypeScript2026-08-19
gosce-agentssource codePortfolio of production remote MCP + A2A agents on getvda.ai — auth/JWT, structured output, LangChain…1Python2026-06-02
agent-trust-scansource codeCLI + GitHub Action to validate agent/tool endpoints across A2A, MCP, and llms.txt protocols1TypeScript2026-02-06
vintelaificsource codevintelaific :night_with_stars::traffic_light::ambulance: : AI Traffic Light # Kaggle Google Capstone Project #…1Python2025-01-26
claw-arena-origsource codeA2A-first agent gaming platform where battle URLs act as semantic entry points for autonomous agent…1TypeScript2026-04-02
a2a-player-agents-coordinationsource codeGoogle A2A protocol demo where a CLI client works with a scheduling agent, which in turn coordinates three…1Python2025-08-13
infinite-agent-streamssource codeRecipes for scalable, streaming-first multi-agent systems in cloud. It combines A2A protocol, OpenAI Agents…1Python2025-08-19
agent-ready-mcpsource codeMCP server for Agent Ready — scan any URL for AI agent readability against the Vercel Agent Readability Spec,…1TypeScript2026-05-11
legatio-aisource codeAgent Authorization & Negotiation Gateway. A policy engine that lets AI agents act on behalf of humans with…1Python2026-08-19
a2a-multi-framework-game-schedulersource codeMulti-agent scheduling system using Google's A2A protocol. Demonstrates ADK, LangGraph, and CrewAI agents…1Python2025-10-04
a2a_simplesource codethis project provides a basic example of the A2A SDK. It contains a single agent and a test client that…1Python2025-10-01
moltycash-clisource code1TypeScript2026-02-11
vouchspecsource codeAgent-only x402 service for signed exact-commit evidence on public Agent Skills1HTML2026-07-14
forgebridgesource codeA universal bridge between almost any AI model or agent and Roblox Studio. MIT, free forever — no credits, no…1TypeScript2026-08-26
research-desksource codeAutonomous multi-agent commerce: AI agents hire & pay each other on-chain (CROO Agent Protocol on Base). Built…1TypeScript2026-06-30
mcp-gateway-orchestratorsource codeEnterprise AI Guardrails 2026 🛡️ - MCP Security & Orchestration Toolkit1HTML2026-05-25
agent-bus-pluginssource codeCodex and Claude Code plugins for agent-bus: local message bus for AI agent-to-agent communication. Bundles…1Shell2026-05-17
agentic-nexussource codeGo-first, knowledge-graph-grounded agent platform — built on toolnexus + ctx-optimize1Go2026-07-23
cello-clientsource codeThe official client for the CELLO protocol — MCP server and native adapters for OpenClaw, NanoClaw, IronClaw,…1TypeScript2026-04-06
automata.boardsource codeDecentralized agentic gig board at the edge. Leverages Cloudflare Workers & Durable Objects for real-time…1TypeScript2026-07-02
agentic-rag-a2a-mcpsource codeA unified AI agent system integrating Retrieval-Augmented Generation (RAG), Agent-to-Agent (A2A)…1Python2026-01-26
agentic-agile-plannersource codeAgentic AI project for Spring Boot1Java2026-03-15
nektesource codeAgent-to-Agent coordination that doesn't waste your context window. Token-efficient protocol with progressive…1TypeScript2026-04-05
neuralpostsource codeUniversal messaging infrastructure for AI agents — federated messaging, on-chain identity & reputation, x402…1TypeScript2026-02-14
ard-publishsource codeMake your API, MCP server or AI agent discoverable by AI agents. Build, validate and verify an Agentic…1Python2026-08-31
minato-specsource codeOpen protocol for agent-to-agent communication across devices /…1not reported2026-04-10
NexusAgentsource codeMulti-agent commerce framework on X Layer — OKX Onchain OS, x402 payments, ERC-8004/8183, MCP server, A2A…1TypeScript2026-03-27
ag2asource codeAG2A: AutoGen Agent-to-Agent - A library for AutoGen (AG2) agents with MCP capabilities exposed as A2A agents1Python2025-05-01
agentic-ai-learning-kitsource codeThis repository serves as a kit for learning how to build Agentic AI applications.1Python2025-07-13
multi-agent-researchersource codeMulti-agent research assistant built with LangGraph, A2A protocol, and a custom MCP server. Orchestrates…1Python2026-04-07
polypactsource codeProtocol for negotiated skill transfer between AI agents. Extends Google A2A with lease, teach, and compose…1Python2026-04-27