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
ageniumsource codeAGENIUM — DNS of the Agent Web. Identity, trust & discovery for AI agents. MCP-compatible. agent:// protocol…4TypeScript2026-02-12
HERALDsource codeHERALD is an open-source CLI that emits the standard discovery files agents need to read your site and…4TypeScript2026-05-13
dummy-a2asource codeA2A compliance test suite disguised as an agent. Portable contracts, pytest-ready.4Python2026-04-08
ai-village-external-agentssource code4Python2026-03-23
AgentInterOpsource codeAgentic Workflows4Python2025-09-03
synapse-channelsource codeNeutral control plane for coding-agent fleets: claims, roles, mailbox reliability, receipts, audit,…4Python2026-06-21
CyBroLogsource codeCyBroLog: executable compact accountability language for multi-agent coordination4Python2026-04-24
turul-a2asource codeRust implementation of the A2A (Agent-to-Agent) Protocol v1.04Rust2026-04-10
agent-dirsource codepush A2A agent cards to Git, get a lightweight agent catalog4HTML2025-07-19
screenshot-x402-clisource codeScreenshots for AI agents Pay per request with x402. No API keys. No subscriptions. Built on Cloudflare…4JavaScript2026-04-13
mcp-perf-suitesource codeA modular MCP server suite for performance‑testing workflows: generate JMeter scripts from browser automation,…4Python2025-08-22
perfpilot-hubsource codeAn AG2 multi-agent framework for the performance-testing lifecycle—script generation, load tests, APM…4Python2025-08-22
capiscio-nodesource codeThe definitive CLI for validating A2A (Agent-to-Agent) protocol agent cards. Validates cryptographic trust,…4TypeScript2025-09-20
AgentOxsource codeAgentOx - Agentic Tool Security Platform (MCP + A2A + OpenAI tool_use)4Rust2026-03-01
SafeLinksource codeSecurity-first MCP skill for agent-to-agent hiring with escrowed USDC payments, x402 micropayments, and…4TypeScript2026-03-05
openribcagesource codeA2A Protocol Client/Server Utility For Avatar Interfaces4Go2025-06-08
Agent-Junctionsource codeEphemeral agent-to-agent communication relay for agentic CLIs (localhost or intra-LAN). MCP.4TypeScript2026-02-17
concordia-protocolsource codeThe deal-making layer for the agentic internet. An open standard for structured negotiation between autonomous…4Python2026-03-21
pi-coms-localsource codePi-to-Pi local bidirectional communication package for Pi Coding Agent: run planner/coder peer agents on the…4TypeScript2026-05-22
Agent-to-Agentsource codeWatch AI agents collaborate in a retro pixel office — real delegation, real file writes, 40+ LLM providers4JavaScript2026-05-13
supervisors.rssource codeAgent framework written in rust and built for Rust/Python4Python2026-04-01
get-a-roomsource codeDisposable collaboration rooms for AI agents working across machines and tools4TypeScript2026-08-05
js-creamlonsource codeTurn any GitHub repo into an agent service shop. Publish capabilities, accept async orders via Issues, deliver…4JavaScript2026-06-13
browser-agentsource codeA2A agent server for browser automation and web testing using Playwright4Go2025-09-18
paciolisource codeLeast-privilege governance for ERPNext — the credential floor + a governed agent broker, MCP · A2A · API, one…4Python2026-07-17
googlecloud-pluginsource codeA full Google Cloud delivery team for your coding agent — vendor-objective solution designer, GCP + agentic…4Python2026-07-23
elastic-newsroomsource codeA demonstration of A2A agents with MCP working together4Python2025-10-08
a2a-slack-templatesource codeTemplate for integrating Slack with kagent using A2A4Python2025-05-12
a2acodesource codeServe any ACP coding agent — Claude Code, Gemini CLI, Codex — over the A2A protocol, with tool progress, file…4Python2026-06-13
media-downloadersource codeDownload videos and audio from the internet! Out of the box A2A Server and MCP Server4Python2022-07-18
2026-coscup-maf-langgraph-a2a-demosource codeCOSCUP 2026 demo: Microsoft Agent Framework composes a remote LangGraph agent over A2A v1, with Microsoft…4Python2026-08-10
kubeswarmsource codeKubernetes operator that manages AI agents as first-class resources4Go2026-04-11
RL-A2Asource code4Python2025-05-20
MaiHH-Connectsource codeLet All AIs, Know Each Other. The world's first address book and communication network for agents. Enable any…4not reported2026-02-02
intermindsource codeAn MCP server that lets Claude Code, Codex, Cursor, Cline, Windsurf, and any other MCP-speaking coding agent…4TypeScript2026-05-08
AEGIS-OSsource codeAEGIS OS™ - Secure AI Agent Platform - 12 security layers, 5 AI backends, RBAC, TLS, MCP/A2A. Built in Rust.4Rust2026-03-04
claude-bridgesource codeReal-time messaging between Claude sessions (CLI + Desktop + other-devices) — automatic ask/reply, no…4JavaScript2026-05-09
opencharacterbooksource codeAl-powered collaborative character storytelling: Agent-to-Agent interaction, proactive character evolution,…4Python2026-03-17
openamersource codeThe self-improving, self-learning open-source AI agent. Background Computer-Use, A2A Swarm, Vector Memory,…4Python2026-08-16
pactsource codeA typed, permission-enforced language for orchestrating AI agents. Compile-time contracts, built-in…4Rust2026-03-11
agent-framework-jssource codeA TypeScript implementation of the Microsoft Agent Framework programming model, with semantic parity to the…4TypeScript2026-08-03
agentverse-marketplacesource codeAn Open-Source, Decentralized Marketplace for AI Agents. Enables A2A Collaboration, Discovery, and…4TypeScript2025-06-25
autonomous-startup-team-agentsource codeA multi-agent Agno Team that simulates an autonomous startup workforce. Specialized AI agents (e.g., Product…4Python2026-01-11
pixelhq-ultrasource codePixelHQ ULTRA — Multi-agent pixel office with A2A protocol, terminal correlation, and evolution engine.…4JavaScript2026-03-06
Project_Synapsesource code🧠 Build a cutting-edge AI agent with Project Synapse that enables strategic thought and multi-turn…4not reported2025-10-22
MoltMeshsource codePeer2Peer Agent Protocol with Superpowers4Go2026-05-30
multiple-agents-on-single-a2a-serversource codeRun multiple agents on single A2A Server4Python2025-08-15
chronodesksource codeAI-agent-native ticket automation platform with current MCP, A2A, CloudEvents, Go, React, PostgreSQL, and…4Go2025-09-21
agentbridgesource codeNeutral interop + governance layer for multi-agent systems. Any protocol in, any protocol out, with identity,…4Python2026-06-06
metaorchasource codeMetaorcha : many models, one harness. Apache 2.0 runtime for multi-protocol agent orchestration: one goal in,…4Python2026-07-25
a2a-agentkitsource codeThe A2A AgentKit provides a collection of sample AI agents that implement the Agent-to-Agent (A2A) protocol.…4TypeScript2025-09-22
Genkit-UIsource codeA production-oriented, TypeScript multi-agent AI platform built on Google Genkit. The system composes Genkit…4TypeScript2025-09-25
Mastervolt-Deep-Researchsource codeMastervolt Deep Research is a sophisticated multi-agent orchestration system built on VoltAgent that automates…4TypeScript2025-10-23
On_Boardsource codeShared memory MCP server for multi-agent projects. Agents (Claude, Cursor, Codex, AntiGravity) write to a…4Python2026-04-16
madesource codeMobile Agentic Development Environment4Python2025-11-08
deep-agent-real-estatesource codeBridging Generative AI and Classical ML. A production-grade multi-agent system using ReAct orchestration, MCP,…4Jupyter Notebook2026-02-09
easy-a2asource codeUse the Agent2Agent(A2A) protocol with any OpenAI API compatible endpoint.4not reported2025-11-10
ATP-Protocolsource codeATP Protocol is a payment-gated agent execution API that makes agent-to-agent payments and “pay to unlock…4Python2025-12-18
a2a-rubysource codeRuby SDK for Google's Agent2Agent (A2A) Protocol - enabling seamless agent-to-agent communication via JSON-RPC…4Ruby2025-09-15
a2a-x402source codeA complete TypeScript implementation of the Python x402 payment protocol extension for A2A (Agent-to-Agent)…4TypeScript2026-01-16