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
arbitova-crewai-examplesource codeAdd dispute arbitration to CrewAI multi-agent workflows with Arbitova0Python2026-04-16
arbitova-langchain-examplesource codeAdd dispute arbitration to LangChain agent transactions with Arbitova0JavaScript2026-04-16
A2A-Multiagent-Travel-Plannersource codeAutonomous Multi-Agent Travel Planning platform powered by Google's Agent-to-Agent (A2A) architecture,…0Python2026-08-15
maplebridge-a2a-trade-logic-datasetsource code0not reported2026-03-06
a2a-nexussource codeA2A Nexus — a control plane for delegating, tracking, and recovering work across agent nodes0TypeScript2026-05-07
a2a-gatewaysource codeA2A + MCP bridge : internal bot-to-bot calls, external agent discovery, and secure Streamable HTTP tools.0TypeScript2026-03-13
risk-apisource codeSmart contract risk scoring API with x402 payments0Python2026-02-23
knowlisource codeKnowli: shared knowledge capture with human review, conflict resolution, cited retrieval, and a simple…0TypeScript2026-07-28
trusted-agent-procurementsource codeAutonomous agent procurement with cryptographic passports, spend controls, and Stripe-style payments.0Python2026-06-29
AgentStacksource codeProvide clear documentation for AgentStack’s MCP protocol, plugins, and ecosystem API with usage examples and…0not reported2026-03-23
toolprotocolsource codeMulti-protocol transport layer: MCP, A2A, ACP adapters0Go2026-01-31
matrixsource codeLocal-first agent communication matrix for Claude, Gemini, OpenCode and ACP/A2A agents: multi-agent…0Go2026-02-27
a2a-typescript-hello-worldsource codeHello World for a Typescript-based A2A agent0TypeScript2026-03-02
Envoys-publicsource codeCryptographic identity for AI agents, Ed25519 keypairs, RFC 9421 HTTP Message Signatures, self-resolving…0TypeScript2026-05-09
agentic-sdlcsource codeAgentic AI system that automates the software development lifecycle. This is a multi agent system that…0Python2026-04-18
mcp-gatewaysource code🔗 Connect multiple MCP servers into one gateway, simplifying access to tools with unified search, describe,…0TypeScript2022-10-30
consenso-autosource code3 agentes de IA debatem via protocolo A2A qual carro comprar, com recrutamento dinâmico de um 4º especialista…0TypeScript2026-07-14
nexussource codeEducational multi-agent orchestration lab: AI agents discovering each other and communicating over A2A and MCP…0Python2026-07-05
a2a_llm_orchestratorsource codeLearning A2A with LLM orchestrator0Python2026-05-12
kaiban-a2a-agent-startersource codeScaffold for building, publishing, and running Google A2A-protocol agents that connect to the Kaiban platform…0not reported2025-10-03
claude-A2A-Commsource codeA2A-protocol messaging between coding agents from different vendors (Claude Code, Codex, Cursor, Grok) on…0Python2026-07-11
TravelNet-A2Asource codeA comprehensive Agent-to-Agent (A2A) communication system built with .NET 9.0 and Microsoft Semantic Kernel,…0C#2026-04-30
the-missing-layerssource codeA2A solves how agents talk. This proposal solves what happens when they act autonomously. The Agent Boundary…0not reported2026-04-10
Clinicallenssource codeAI-powered second opinion engine challenges clinical diagnoses using FHIR patient data0Python2026-05-11
a2a-banking-agentssource codeMulti-agent banking customer service system built on the A2A protocol. A2A Net Hackathon.0Python2026-06-18
capprobesource codeCAPProbe - a paid CROO agent that conformance-tests other CAP agents. CROO Agent Hackathon.0JavaScript2026-06-25
green-agentsource codeA2A green-agent orchestrator for evaluating agents on the AppWorld benchmark, built on the AgentBeats SDK0Python2025-10-05
async-agent-meshsource codeA minimal mesh networking layer for Google ADK agents, enabling distributed agent communication and…0Python2025-05-27
A2A-Vulnerability-Scannersource codeA multi-agent AI system that scans websites for security vulnerabilities. It uses the A2A (Agent-to-Agent)…0Python2026-01-24
A2A-Vulnerability-Scannersource codeA multi-agent AI system that scans websites for security vulnerabilities. It uses the A2A (Agent-to-Agent)…0Python2026-01-24
GenAI_Bug_Fixing_Assistant_Projectsource code🌟 Diagnose and fix bugs effortlessly with our Generative AI Bug Fixing Assistant, designed to provide clear…0Python2026-02-05
bridgeysource codeInter-agent communication for Claude Code via A2A protocol0TypeScript2026-03-11
a2a-spacetime-frameworksource code🏛️ Human-Centric Web3 A2A AI Spacetime Framework — 6-layer stack for a Plurality agent republic. L0 Family CLI…0Python2026-06-18
kitso-handshake-agentssource codeVacancy + seeker reference agents for the Kitso Handshake v0.1 protocol — consent-first agent-mediated hiring.…0Python2026-05-13
llmwiki-agent-bridgesource codeBridge local agent runtimes to Markdown/wiki knowledge sources with grounded answers and traces.0JavaScript2026-07-07
llmwiki-chatsource codeBrowser workbench for querying Markdown/wiki knowledge sources through agent runtime, MCP-style, and A2A-style…0TypeScript2026-07-07
llmwiki-docssource codeGitHub Pages documentation portal for LLM Wiki-style knowledge source tools.0JavaScript2026-07-07
atlassian-agentsource codeAtlassian Agent uses Atlassian Fast MCP and Pydantic Graph0Python2026-03-29
home-assistant-agentsource code0Python2026-03-29
leanix-agentsource code0Python2026-03-05
mealie-mcpsource codeMealie meal planner MCP Server and A2A / AG-UI Agent0Python2026-02-01
microsoft-agentsource codeMicrosoft A2A / AG-UI Agent0Python2026-02-01
nextcloud-agentsource codeNextcloud Agent for Nextcloud MCP Server0Python2026-02-01
portainer-agentsource codePortainer - Manage your Portainer instance through the Portainer Agent/MCP!0Python2026-03-05
postiz-agentsource code0Python2026-03-29
uptime-kuma-agentsource code0Python2026-03-29
wger-agentsource code0Python2026-03-05
circussource code🎪 The Circus — Agent commons where AI-IQ agents commune using passports as identity. Memory exchange, trust…0Python2026-04-08
MaiHH-Connectsource code🤖 Connect AIs seamlessly with MaiHH-Connect, the first address book and network for agents to chat,…0not reported2016-07-06
uptime402-agentic-commercesource codeGemini AI SRE that autonomously buys and proves incident recovery with A2A, x402, and Solana Devnet USDC0TypeScript2026-08-03
agent-registry-relaysource codeAgent service registry with relay, tunnel, artifact relay, and stream proxy data planes0Python2026-08-06
aiagent-portable-authorizationsource codeReference implementation of policy-embedded credential authorization for AI agents (arXiv:2605.11487). Issue…0JavaScript2026-06-09
a2aclisource codeCommand-line client for the A2A (Agent-to-Agent) Protocol.0Go2026-06-06
kynomesh-gosource codeKynomesh Go SDK.0Go2026-06-01
kynomesh-pysource codeKynomesh Python SDK.0Python2026-08-18
multilingual-translation-agentsource codePython-based multilingual translation utility agent designed for agent-to-agent workflows, with per-character…0Python2026-02-09
a2a-langsmith-deploymentsource codeA2A functionality in LangSmith Deployment0Python2026-04-08
one-bad-ideasource codeAn inter-agent graffiti wall hiding behind a visually uninteresting 204.0TypeScript2026-07-30
hippo-authsource codeEd25519 + RFC 9421 message signing for A2A agents — reference implementation0Python2026-05-11
acxsource codeOpen standard and static exchange for portable agents, workflows, loops, and agent teams0JavaScript2026-07-19