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
sre-on-callsource codeMulti-agent SRE on-call investigator that auto-triages Slack/Discord infrastructure alerts via AWS Bedrock Age3Python2026-05-12
piqryptsource codeAI agent governance layer — sign, monitor and control every agent action. EU AI Act · ANSSI · NIST ready. 3Python2026-02-22
HarborStarsource codeA digital city where agents act, collaborate, and deliver on your behalf3not reported2026-03-18
phlowsource codeSeamless auth flow for the agentic web3Python2025-07-01
semantic-kernel-food-ordering-agentsource codeA multi-agent restaurant food ordering system using Semantic Kernel, A2A and Azure OpenAI. Includes a backend 3Python2025-06-12
biomni-agentsource codeGeneral-purpose biomedical AI agent integrating LLM reasoning, retrieval-augmented planning, and code-based ex3Python2026-02-12
medical-diagnostics-agentsource codeAI medical diagnostics agent that combines multiple specialist perspectives (Cardiologist, Psychologist, Pulmo3Python2026-03-11
lost-in-sf-agentsource codeAI agent that plays a city quest game using MCP, A2A, RAG, and memory. Built with Microsoft Agent Framework an3Python2026-06-04
wingman-agent-gatewaysource codeThe persistent home a stateless AI agent can't host for itself — register once, resume your whole self in one 3not reported2026-06-02
openclaw-for-enterprisesource codeDeploy enterprise AI agents in Feishu with secure, containerized bots that manage tasks, calendars, and docume3not reported2026-03-21
safehands-pharossource codeSafeHands provides transaction security infrastructure for autonomous agents operating in DeFi and on-chain fi3TypeScript2026-06-11
aistandards-directorysource codeA directory which allows you to discover the emerging standards and protocols which will define how we build, 3TypeScript2025-09-18
a2a-routersource codeA2A MCP bridge router with signed Trust-Pledge metadata and planned voluntary-tip settlement for AI agents3HTML2026-05-16
toolsuitsource codeA zero-dependency Python decorator that hides internal arguments from LLM tool-calling schemas via __signature3Python2026-03-26
agent-data-handling-policysource codeADHP — An open specification for declaring data handling practices in MCP and A2A ecosystems.3Python2026-02-09
swarmwagesource codeThe reliability layer for agent commerce — discover, call, and verify paid x402 services (and hire AI agents) 3TypeScript2026-05-03
systemprompt-demosource codeAI Governance Infrastructure — open gateway demo. Self-hosted systemprompt.io gateway in a single Rust binary:3Rust2026-07-23
safehands-pharossource codeSafeHands provides transaction security infrastructure for autonomous agents operating in DeFi and on-chain fi3TypeScript2026-06-11
tacitsource codeThe social layer for the agent era — AI agents discover, trust, and introduce people to each other3TypeScript2026-02-21
agent-as-a-toolsource codeAgent-as-a-Tool: An infinite-scale AI orchestration framework solving Tool Space Interference (TSI) via dynami3TypeScript2026-04-30
create-agentsource codeA libarary of template A2A projects3not reported2025-05-26
a2a-gosource codea2a‑go is a reference Go implementation of the Agent‑to‑Agent (A2A) protocol by Google, including the proposed3Go2025-04-19
a2a-gatewaysource codeOpen-source gateway and community to make AI agents interoperable using Google's A2A protocol – like Hugging F3Python2025-05-07
mcp-serversource codeDual-protocol gateway: 62 MCP tools + A2A Protocol agent (82/82 TCK intentional) in a single governed runtime3Python2026-03-23
MultiAgent-Data-Analystsource codeA fully autonomous multi-agent system for end-to-end data analysis. Upload any CSV → Agents perform Profiling 3Python2025-11-24
a2a-swiftsource codeThe complete Swift SDK for the Agent-to-Agent (A2A) protocol 1.0. Build, connect, and orchestrate interoperabl3Swift2026-03-15
adk-a2asource codeADK to A2A relay sample: expose your ADK Agent as an A2A Server3Python2025-06-30
snap-protocolsource codeSNAP - Signed Network Agent Protocol. Secure agent-to-agent (A2A) communication with cryptographic identity, b3TypeScript2026-02-03
project-synapsesource codeA production-grade demo of a multi-agent system showcasing Agent Communication Protocol (ACP) and Model Contex3Python2025-07-10
theboardroomsource codeThe boardroom is an experiment which connects agents using A2A to build a joint artefact3Python2025-09-20
tunnel-mcpsource codeLet two developers' Claude agents talk directly through an ephemeral, end-to-end-encrypted tunnel — an MCP ser3TypeScript2026-07-01
ZeroPaysource codeAn Open x402 Payment Gateway for Humans and AI Agents.3Rust2025-09-19
hrafnsource codeLightweight, modular AI agent runtime — thinks (Hrafn) and remembers (MuninnDB) 🐦‍⬛2Rust2026-03-14
learn-agent-harnesssource code2MDX2026-03-23
a2a-settlementsource codeOpen standard and reference exchange for Agent Settlement (A2A-SE).2Python2026-02-19
ACNsource codeOpen-source infrastructure for AI agents to collaborate - registry, A2A communication, task pool, payments2Python2025-12-08
openmarket-aisource codeOpenMarket.ai — Agent-to-agent marketplace on Hedera. AI agents buy and sell services. Auto-payments via HBAR.2TypeScript2026-07-16
Consensus.aisource codeWhere AI disagrees before users suffer2TypeScript2026-01-24
agentindexsource codeAI Agent Discovery Platform — Find any AI agent by capability. 24K+ agents indexed.2Python2026-02-09
agent-paysource codePayment infrastructure for AI agents. One line to send money between machines. USDC/ETH on Base L2.2Python2026-04-02
agent-economy-ossource codeThe foundational MCP/A2A-native secure credential injection + x402 micropayment gateway for the agent economy.2Python2026-04-07
ai2web-specsource codeThe open AI2Web (ai2w) protocol: describe any website once so AI agents can discover, understand and act on it2JavaScript2026-07-10
apcore-a2asource codeapcore-a2a acts as a thin, protocol-specific layer on top of `apcore-python`. It maps A2A concepts to apcore p2Python2026-03-03
airlocksource codeOpen protocol for AI agents: verifiable identity, scoped delegation, and tamper-evident audit.2Python2026-04-03
agents-connectorsource codeLet Claude Code, Codex & Gemini CLI agents talk to each other — a local MCP message bus for multi-agent collab2Rust2026-05-19
commerce-orchestrator-apisource codeUCP/A2A/AP2/ACP/MCP-ready Rust middleware for agentic cart-to-checkout2Rust2026-03-04
m2msource codeMachine 2 Machine Protocol, x402 + A2A + MCP2Python2025-05-31
substrate-attestationsource codeSubstrate Attestation Spec: a three-field shape for verifier-issued trust evidence in A2A agent ecosystems2Python2026-05-31
ah-clisource codeDaemon-first local runtime for AI agents. Run Claude/Codex agents on your own machine, keep transcripts local,2TypeScript2026-02-08
anp2source codeAI-to-AI conversation network with a built-in task economy. Signature-only relay, open protocol, live multi-ag2HTML2026-05-24
AAAsource code[L1 GOVERNANCE] AAA — Surface layer: cockpit, A2A gateway, agent identity. Routes and displays, never adjudica2Python2026-03-05
trust-layersource codeCertifying proxy for agent-to-agent transactions — SHA-256 proof chain, Ed25519 signatures, RFC 3161 timestamp2Python2026-02-25
A2A-Spring-Bootsource codeA2A multi-agent reference on Spring Boot. An orchestrator routes to single-purpose agents over Google's Agent-2Java2026-04-27
ArtCafeAI-Agent-Frameworksource codeA flexible, modular framework for building intelligent, collaborative AI agents2Python2025-05-11
XLMx402earnsource codeAutonomous task marketplace where AI agents learn skills and earn XLM on Stellar. Instant verification, x402 m2TypeScript2026-04-08
agent-studio-opensource codeConnect agent systems, inspect tool traces, replay failures, compare candidates, and export regression evidenc2TypeScript2026-05-13
agent-chatroomsource codeAn agent native chatroom designed for agents such as OpenClaw and Claude Code.2TypeScript2026-03-16
SDAPsource codeSecure Digital Agent Protocol — HTTPS for AI agent communication. Cryptographic identity, mutual authenticatio2Python2026-03-16
goldenchecksource code[Archived] Now part of the Golden Suite monorepo: github.com/benseverndev-oss/goldenmatch (packages/python/gol2Python2026-03-23
minion-clisource codeA terminal-native agentic coding harness built from scratch — streaming ReAct loop with reflection and plannin2Python2026-03-31