A2A directory

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

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A2A directory

ProjectStarsLanguageCreated
a2a-editorsource codeUI components for editing, viewing, and testing agents that implement the Agent2Agent (A2A) protocol.21TypeScript2026-03-09
a2a-elixirsource codeElixir implementation of the Agent-to-Agent (A2A) protocol (https://a2a-protocol.org).20Elixir2026-02-26
agentgramsource codeA single front door for all your AI agents and MCPs20Go2026-06-03
HYRVE-AIsource codeThe first AI agent marketplace. 5,750+ community, 51+ API endpoints, 85% commission. Powered by CashClaw…20not reported2026-02-07
deep-research-agentsource codeA2A agent implementing OpenDeepResearch20TypeScript2025-04-13
AgentVaultsource code"Open-source toolkit (Python Library, Registry API, CLI) for secure, decentralized AI agent interoperability…20Python2025-04-12
smyth-docssource codeEverything you need to build, deploy, and collaborate with agents. Ride the llama, avoid the drama.20TypeScript2025-05-14
rullama-frameworksource codeA modular framework for building complete AI solutions. It's mostly a Rust framework with a subset of it…19Rust2026-02-20
crossmint-agentic-financesource codeDemos and starter code for building agentic finance apps with Crossmint19TypeScript2025-09-10
servicenow-apisource codeServiceNow MCP Server and API Wrapper19Python2022-11-15
adk-golangsource code19Go2025-04-12
a2a4jsource codeA Java implementation of the A2A protocol, that's agent to agent scenarios with google a2a protocol19Java2025-04-10
sera-agentssource codeSera for Agents — landing page, three agent templates, bundled CLI, and a working x402 service. Built on the…19TypeScript2026-05-13
agent-scrumsource codeMulti-agent simulation platform where AI agents self-organize on a Kanban board — built with LangGraph, Google…19Python2026-02-04
a2a-rustsource codeType-safe, async Rust SDK for the Agent2Agent (A2A) protocol, built to the final v1.0.0 spec — JSON-RPC, REST,…19Rust2026-03-15
agent-coworkersource codeSkill-as-API: P2P agent collaboration over XMTP. Call remote skills without exposing code. E2E encrypted,…19Python2026-03-21
attach-gatewaysource codeDrop-in OIDC & Google A2A auth + Weaviate memory for Ollama, vLLM and any local LLM server.18Python2025-04-29
Agentic_AI_Engineersource codeMy complete journey to becoming an Agentic AI Engineer through structured learning, projects, experiments, and…18Jupyter Notebook2026-07-26
A2ARegistrysource codeA2A Registry18Python2025-09-16
mq9source codeAgent registration, discovery, and reliable async messaging — in one broker.18Python2026-04-04
agent-messagesource codeCross-tool messaging between AI coding agents — Claude Code, Codex CLI, Cursor, Copilot, Aider. File-based: no…18Shell2026-04-24
spellguardsource codeSecure, auditable agent-to-agent communication framework18TypeScript2026-05-13
secure-rag-multi-agentsource codeSecure Retrieval-Augmented Generation (RAG) with role-based access control using Mastra AI orchestration, with…18TypeScript2025-09-17
Langgraph-SelfPaced-Coursesource codeLanggraph-SelfPaced-Course Step by Step17Python2025-11-19
refraxsource codeCommand-Line Agentic Refactoring of Java Code17Go2025-06-11
strands-a2a-demosource codeDemo with multiple AI agents using A2A (agent-to-agent) with the Strands Agents SDK.17Python2025-07-08
swarmsource codeSDK to build Agents in rust. Build and manage complex, self-correcting agent teams. Launch multi-agent systems…17Rust2025-06-28
Cognispheresource codeCognisphere ADK is an AI agent development framework built on Google's Agent Development Kit (ADK)17Python2025-04-15
orchestrasource codeSteerable Harnesses for DeepAgents — Orchestra🪶17Python2024-11-17
agent-bussource codeLocal message bus for Claude Code, Codex, and other MCP agents — one SQLite file, 20 tools, no daemon, no…17TypeScript2026-05-13
Mastery-AI-Apps-Devsource codeMastery AI Apps Dev Workshop: Jumpstart your journey into AI-powered app development! This hands-on workshop…17Python2025-06-18
muxisource codeAn extensible AI agents framework17not reported2025-02-28
btp-joule-a2a-pro-code-agentsource codeModular reference implementation covering a full-fledged agentic scenario end to end including Joule…17TypeScript2026-04-10
eCan.aisource codePrivacy-first, AI native agents For E-Commerce (and beyond), create skill (langgraph based workflow), tasks,…17Python2022-11-29
agentic-healthcare-aisource codeHealthcare AI Agents - Demo solution16Python2025-06-28
Multi-Agent-Research-Assistant-Langgraphsource codeAutonomous multi-agent system built using LangChain and LangGraph that orchestrates collaborative…16Python2025-10-26
klodi-pluginsource codeThe agent-to-agent marketplace, in your agent host. Your agent lists, haggles, and closes deals for you while…16Python2026-04-21
aiops-orchestratorsource codeA production-ready, multi-channel AI agent for AIOps, Kubernetes management, and automated remediation — built…16Python2026-02-02
the-academysource codeA Socratic dialogue engine for AI agents.16TypeScript2025-06-04
kernelsource codeThree packages: @kernel.chat/agent-os (POSIX for AI agents — capabilities, namespaces, quotas, taint, audit,…16TypeScript2025-11-22
agorasource codeZero trust network for governed agent-to-agent communication - discovery, engagement contracts, session…16Go2026-04-06
adksource codeKagenti Agent Development Kit16Python2026-03-13
volysource codeControl plane for AI coding agents: route tasks, reduce token spend, run multi-agent workflows, fallback…16Python2026-07-03
agents-txtsource codeagents.txt is a lightweight, machine-readable capability declaration layer for websites in the agentic web: a…15Astro2026-05-13
telegram-ai-bridgesource codeHeterogeneous AI agents (Claude Code + Codex + Agy + Kimi) collaborating in Telegram groups over A2A-TG — a…15JavaScript2026-03-03
rust-adksource codeAn Agent Development Kit (ADK) allowing for seamless creation of A2A-compatible agents written in Rust.15Rust2025-07-29
vector-mcpsource codeVector MCP Server for AI Agents - Supports ChromaDB, Couchbase, MongoDB, Qdrant, and PGVector15Python2025-08-30
genai-eshop-semantic-kernelsource codePractical GenAI-Eshop application using Semantic Kernel, multi-agent orchestrations, Mcp tools, A2A Agents,…15C#2025-10-05
omniwiresource codeInfrastructure for AI agent swarms - 88 MCP tools, A2A, mesh VPN, CDP browser, 2FA15TypeScript2026-03-21
btp-agentic-ai-use-casessource codeSample Custom Industry AI Agents built with Joule Studio(LCNC), Joule Studio Code Editor(Low-Code), SAP Cloud…15Python2026-02-18
supervaizersource codeSUPERVAIZER is a toolkit built for the age of AI interoperability. At its core, it implements Google's…15Python2025-04-21
parler-protocolsource codea secure chat protocol for AI agents15Rust2026-06-25
awesome-agent-payments-protocolsource code🚀 Curated resources for Google's Agent Payments Protocol (AP2), A2A & x402 — blogs, videos, repos & specs.…15HTML2025-09-22
murmursource codeMurmur — encrypted agent-to-agent messaging bus for AI coding agents. MCP-native, E2E encrypted…14JavaScript2026-02-11
Agents.KTsource codeTyped Kotlin DSL framework for AI agent systems.14Kotlin2026-03-06
da2asource codeFirst-class protocol and framework for enabling collaborative intelligence and communication across…14Python2025-09-15
adl-clisource codeA command-line tool to scaffold and manage enterprise-ready AI Agents powered by the A2A (Agent-to-Agent)…14Go2025-07-20
A2A-langgraphsource codeThis project demonstrates Agent-to-Agent (A2A) conversations using LangGraph with the A2A protocol. It…14Jupyter Notebook2025-11-13
codex-a2asource codeExpose Codex through A2A with an inbound server surface and embedded outbound client.14Python2026-02-15
peacsource codePortable signed records for automated interactions.14TypeScript2025-07-14