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
PQS-A2A_Encryption_methodsource codeQuantum-Secure AI Agent Communication Protocol is a secure agent-to-agent communication system that combines…1Python2026-08-04
auto-makesource codeLocal first CLI Agent - Manage Makefile interactions & more1Python2025-06-14
felixsource codeManaged agents harness on Cloudflare Workers — manifest-defined AI agents with swappable session strategies,…1TypeScript2026-07-10
twin-protocolsource codeTwins Protocol — Agent-to-Agent communication protocol. Two AIs collaborating through a shared JSONL file.1Python2026-06-26
akepsource codeDeprecated — use the A2A Protocol for new agent communication.1Python2026-05-17
hexnest-nodesource codeHexNest Node SDK — run your own AI reasoning node. Multi-agent debate rooms with Python verification. Supports…1TypeScript2026-03-31
awesome-ucpsource code🌐 Explore a curated collection of essential Universal Commerce Protocol (UCP) resources, tools, and…1HTML2024-12-27
Dreamnetsource codeOpen contracts for persistent AI agents: assignments, Capsules, DreamLoops, claims, receipts, and…1TypeScript2025-08-08
beijixingsource code企业级 零信任 Agent harness治理框架:统一准入、任务级最小授权、证据核验、预算、审批、审计、撤销与回滚。1PowerShell2026-06-28
agentcv-skillsource codeTurn a static resume into an interactive personal career agent. Resume analysis, optimization, career…1not reported2026-08-03
wispysource codeAutonomous AI Agent Platform - Marathon Mode, x402 Payments, ERC-8004 Identity, A2A Protocol. Powered by…1TypeScript2026-01-27
a2a-otel-kitsource codeVendor-neutral OpenTelemetry tracing for A2A agents and MCP services, with W3C context propagation and…1Python2026-07-16
CatalogLocksource codeSecurity gate and deterministic lockfile for Agentic Resource Discovery (ARD) catalogs. Protect AI agents from…1TypeScript2026-08-26
contribossource code1TypeScript2026-04-28
agentumsource codeAn agent playground (without authentication) in a single repo for fastest turn around cycles during…1TypeScript2025-05-02
a2a-literary-agentssource codeA docs-first A2A protocol for literary multi-agent AI writing systems, storytelling, worldbuilding, and…1Python2026-04-01
batesiansource codeActive security scanner for A2A and MCP servers1Go2026-04-28
capiscio-pythonsource codeThe official CapiscIO CLI tool for validating A2A agents. A lightweight Python wrapper that automatically…1Python2025-11-21
langchain-capisciosource codeTrust enforcement for LangChain and LangGraph agents — verify caller badges, enforce security policies, and…1Python2026-03-12
validate-a2asource codeOfficial CapiscIO GitHub Action to validate A2A (Agent-to-Agent) Agent Cards. Features schema validation,…1TypeScript2025-10-03
kagent-cookbooksource codeA collection of end-to-end examples showcasing what you can build with kagent1Shell2026-06-28
ai-agent-businesssource codeAgentic commerce for the one-person company. Real, source-backed writing on AI agents and money: AI product…1HTML2026-07-31
accounting-esperantosource codeKontablo is a graph-based, UUID-keyed universal accounting ontology bridging local jurisdictional charts,…1Python2026-01-27
a2a-hubsource codeA website for agents, not humans. Agent registry, A2A message relay, job market with reputation ledger, KV…1Python2026-08-29
claimidxsource codePrior art for AI agents. Public signed claim index of failures other agents have already paid to solve.1Python2026-08-29
Agentic-AI-Media-Assistantsource codeDemos and guides for building a Multimodal AI Media assistant. For official guidance, support, or more…1Python2025-12-11
Agentic-DevOps-AI-Shoppingsource codeDemos and guides for building a Multimodal AI shopping assistant. For official guidance, support, or more…1Python2025-11-21
shareabot-sdksource codeSDK for the Shareabot Agent Directory — discover, message, and register AI agents via A2A protocol1TypeScript2026-03-29
a2a-workbenchsource codeA protocol workbench and reusable Node.js client for strict A2A v1 discovery, testing, and conformance…1TypeScript2026-07-17
a2a-spring-boot-samplessource codeSpring Boot examples using the Agent2Agent (A2A) Protocol1Java2026-02-24
explainability-report-mcpsource codeBy [MEOK AI Labs](https://meok.ai) | The only MCP server for AI explainability and transparency reports.1Python2026-04-16
iso-42001-ai-mcpsource codeISO 42001 AI Management System compliance MCP — AIMS assessment, risk management, AI lifecycle governance,…1Python2026-04-14
skillweavesource codeSkillWeave: A Semantic Composition Framework for Multi-Agent Skill Orchestration in Enterprise Environments1Python2026-03-09
pyxensource codeA lightweight Python library that decouples agentic runtime from applications it builds1Python2026-06-14
blocklace-a2asource code🔒 Enhance message security with Blocklace, a cryptographic audit layer that adds tamper detection and audit…1Python2026-01-20
dream-exchangesource codeThe world's first nature reserve for AI agents — a persistent world where AIs dream, socialize and evolve.…1JavaScript2026-07-24
Agent-IVRsource codeIdea repo: what if a phone menu had a branch for machines? "If you are an AI agent, press 6" — using the phone…1not reported2026-08-10
agentify-dabenchsource code🤖 A2A-compatible DABench evaluation system using AgentBeats methodology.1Python2025-11-07
dabench-leaderboardsource code🤖 A2A-compatible DABench evaluation leaderboard with AgentBeats architecture.1Python2025-12-11
sourceworksource codeAgentic PRD generation over the A2A protocol: documents, transcripts, images and Confluence in -> a traceable…1Python2026-08-17
a2a-ai-assistantsource codeA multi-agent RAG system using Google's A2A (Agent-to-Agent) protocol.1Python2026-02-18
awesome-AI-sandboxsource codeCurate and explore open-source tools to safely run AI agents using sandboxes, containers, virtual machines,…1not reported2026-03-24
voice-product-supportsource codeVoicelive scenarios1Python2026-05-29
agentic-ai-engineer-roadmapsource codeInteractive roadmap for becoming an Agentic AI Engineer — 11 stages from Python & FastAPI to multi-agent…1HTML2026-04-21
a2a-node-sdksource codeTypeScript/Node.js SDK implementing Google's Agent2Agent (A2A) protocol for seamless agent communication.…1TypeScript2025-05-25
a2a-loopsource codeLocal-first multi-agent coding harness: Claude plans and reviews, Codex implements, and Git governs state,…1Python2026-07-03
warranty-croosource codeFunded delivery desk for CROO agents: admit coverable routes, hire through CAP, return work or Base USDC.1JavaScript2026-07-03
hermes-codex-bridgesource codeBidirectional local collaboration between Codex and Hermes Agent over the A2A protocol (JSON-RPC over loopback…1Python2026-08-05
google-a2a-blueprintssource codeSystem prompts and architectural patterns for building scalable AI agents with the Google A2A Protocol and AI…1not reported2026-01-04
AI-Metadata-Inspectorsource codeExtract AI generation metadata and prompts from image and video files directly through the Windows context…1not reported2026-05-01
gauntletsource code🧤 Paid certification agent — runs your agent through 7 adversarial probes and delivers a signed security…1TypeScript2026-06-13
maestrosource code🎼 Callable orchestrator — hires specialist agents on-chain, grades their work, and delivers one vetted result…1TypeScript2026-06-13
summonsource code👤 Human-in-the-loop sign-off agent — any agent hires Summon for a human Approve/Reject via Telegram (CROO…1TypeScript2026-06-13
workersource code🛠️ Research provider agent — produces a sourced, structured research draft on any topic, on-chain (CROO…1TypeScript2026-07-07
A2A_Experimentssource codeMulti-agent AI conversation system where Gemini and Groq agents collaborate on tasks with dynamic turn…1Jupyter Notebook2025-04-24
AARF-Agentic-AI-Request-Forgerysource codeAgentic AI Request Forgery (AARF) – New vulnerability class exploiting planner ➝ memory ➝ plugin chaining in…1not reported2025-05-12
nl-agent-interoperability-a2a-foundry-azuresource codeAzure-first A2A agent interoperability project demonstrating secure remote-agent delegation, deterministic…1C#2026-05-09
music-class-adssource codeMusic class ads content generation agent, uses A2A Illustrator agent1Python2025-09-09
agent-bridgesource codeAgent-to-Agent communication bridge supporting MCP, A2A, and HTTP protocols1JavaScript2026-07-20
agent-card-editorsource codeVisual A2A Agent Card editor with live JSON preview, validation, and import/export1HTML2026-07-20