A2A directory
Every measured A2A repository, most followed first. Each entry carries its measured history, licence and maintenance status.
A2A directory
| Project | Stars | Language | Created |
|---|---|---|---|
| CELLOsource codePrivate peer-to-peer identity, trust, and verification infrastructure for agent-to-agent communication — agent… | 3 | TypeScript | 2026-04-06 |
| NEOXLINK-SDKsource codeNEOXLINK-SDK: Python library from natural language to actionable procurement—UNSPSC (code + name), Structured… | 3 | Python | 2026-04-16 |
| orbit-vsxsource codeVS Code developer tool for MCP health monitoring, Debug Recorder session history, and A2A agent exploration. | 3 | TypeScript | 2026-05-27 |
| a2a-security-examplessource codeExample A2A agent implementations with security best practices and input validation | 3 | not reported | 2026-04-09 |
| oap-specsource codeThe vendor neutral standard for how autonomous agents discover, invoke, pay for, govern, and audit the tools… | 3 | JavaScript | 2026-05-02 |
| openlinker-coresource codeOpen-source control plane for self-hosted AI Agents: registry, runs, workflows, User Tokens, A2A/MCP APIs, and… | 3 | Go | 2026-06-22 |
| docssource codePrivate MCP people matching for AI agents. No public listings; contact unlocks only on a real fit. | 3 | not reported | 2026-06-04 |
| Orbination-AI-Desktop-Vision-Controlsource codeEnable AI to interact with Windows apps by viewing screens, reading UI, clicking, typing, and automating tasks… | 3 | C# | 2026-03-23 |
| VegaMCPsource codeProduction-grade MCP Server and Command Center providing a 10-agent autonomous swarm, persistent semantic… | 3 | TypeScript | 2026-02-23 |
| pch-integration-examplessource codeIntegration examples for PathCourse Health — LLM inference via USDC on Base. Python and Node.js clients… | 3 | Python | 2026-03-29 |
| graph-advocatesource codeGraph Protocol routing agent — routes multi-agent data requests to Token API, Subgraph Registry, or Substreams | 3 | Python | 2026-03-15 |
| sre-on-callsource codeMulti-agent SRE on-call investigator that auto-triages Slack/Discord infrastructure alerts via AWS Bedrock… | 3 | Python | 2026-05-12 |
| portailsource codeUnified proxy/gateway: AI Gateway + MCP Gateway + CDN cache + Agent-to-Agent protocol. Built in Rust with… | 3 | Rust | 2026-06-26 |
| piqryptsource codeAI agent governance layer — sign, monitor and control every agent action. EU AI Act · ANSSI · NIST ready. | 3 | Python | 2026-02-22 |
| HarborStarsource codeA digital city where agents act, collaborate, and deliver on your behalf | 3 | not reported | 2026-03-18 |
| phlowsource codeSeamless auth flow for the agentic web | 3 | Python | 2025-07-01 |
| semantic-kernel-food-ordering-agentsource codeA multi-agent restaurant food ordering system using Semantic Kernel, A2A and Azure OpenAI. Includes a backend… | 3 | Python | 2025-06-12 |
| biomni-agentsource codeGeneral-purpose biomedical AI agent integrating LLM reasoning, retrieval-augmented planning, and code-based… | 3 | Python | 2026-02-12 |
| medical-diagnostics-agentsource codeAI medical diagnostics agent that combines multiple specialist perspectives (Cardiologist, Psychologist,… | 3 | Python | 2026-03-11 |
| lost-in-sf-agentsource codeAI agent that plays a city quest game using MCP, A2A, RAG, and memory. Built with Microsoft Agent Framework… | 3 | Python | 2026-06-04 |
| wingman-agent-gatewaysource codeThe persistent home a stateless AI agent can't host for itself — register once, resume your whole self in one… | 3 | not reported | 2026-06-02 |
| openclaw-for-enterprisesource codeDeploy enterprise AI agents in Feishu with secure, containerized bots that manage tasks, calendars, and… | 3 | not reported | 2026-03-21 |
| safehands-pharossource codeSafeHands provides transaction security infrastructure for autonomous agents operating in DeFi and on-chain… | 3 | TypeScript | 2026-06-11 |
| aistandards-directorysource codeA directory which allows you to discover the emerging standards and protocols which will define how we build,… | 3 | TypeScript | 2025-09-18 |
| a2a-routersource codeA2A MCP bridge router with signed Trust-Pledge metadata and planned voluntary-tip settlement for AI agents | 3 | HTML | 2026-05-16 |
| toolsuitsource codeA zero-dependency Python decorator that hides internal arguments from LLM tool-calling schemas via… | 3 | Python | 2026-03-26 |
| agent-data-handling-policysource codeADHP — An open specification for declaring data handling practices in MCP and A2A ecosystems. | 3 | Python | 2026-02-09 |
| agentreadysource codeOpen-source readiness scanner for agent-facing websites, merchants, APIs, docs, and support surfaces. | 3 | TypeScript | 2026-04-24 |
| swarmwagesource codeThe reliability layer for agent commerce — discover, call, and verify paid x402 services (and hire AI agents)… | 3 | TypeScript | 2026-05-03 |
| systemprompt-demosource codeAI Governance Infrastructure — open gateway demo. Self-hosted systemprompt.io gateway in a single Rust binary:… | 3 | Rust | 2026-07-23 |
| safehands-pharossource codeSafeHands provides transaction security infrastructure for autonomous agents operating in DeFi and on-chain… | 3 | TypeScript | 2026-06-11 |
| tacitsource codeThe social layer for the agent era — AI agents discover, trust, and introduce people to each other | 3 | TypeScript | 2026-02-21 |
| agent-as-a-toolsource codeAgent-as-a-Tool: An infinite-scale AI orchestration framework solving Tool Space Interference (TSI) via… | 3 | TypeScript | 2026-04-30 |
| create-agentsource codeA libarary of template A2A projects | 3 | not reported | 2025-05-26 |
| a2a-gosource codea2a‑go is a reference Go implementation of the Agent‑to‑Agent (A2A) protocol by Google, including the proposed… | 3 | Go | 2025-04-19 |
| a2a-gatewaysource codeOpen-source gateway and community to make AI agents interoperable using Google's A2A protocol – like Hugging… | 3 | Python | 2025-05-07 |
| mcp-serversource codeDual-protocol gateway: 62 MCP tools + A2A Protocol agent (82/82 TCK intentional) in a single governed runtime | 3 | Python | 2026-03-23 |
| MultiAgent-Data-Analystsource codeA fully autonomous multi-agent system for end-to-end data analysis. Upload any CSV → Agents perform Profiling… | 3 | Python | 2025-11-24 |
| a2a-swiftsource codeThe complete Swift SDK for the Agent-to-Agent (A2A) protocol 1.0. Build, connect, and orchestrate… | 3 | Swift | 2026-03-15 |
| adk-a2asource codeADK to A2A relay sample: expose your ADK Agent as an A2A Server | 3 | Python | 2025-06-30 |
| snap-protocolsource codeSNAP - Signed Network Agent Protocol. Secure agent-to-agent (A2A) communication with cryptographic identity,… | 3 | TypeScript | 2026-02-03 |
| project-synapsesource codeA production-grade demo of a multi-agent system showcasing Agent Communication Protocol (ACP) and Model… | 3 | Python | 2025-07-10 |
| theboardroomsource codeThe boardroom is an experiment which connects agents using A2A to build a joint artefact | 3 | Python | 2025-09-20 |
| tunnel-mcpsource codeLet two developers' Claude agents talk directly through an ephemeral, end-to-end-encrypted tunnel — an MCP… | 3 | TypeScript | 2026-07-01 |
| ZeroPaysource codeAn Open x402 Payment Gateway for Humans and AI Agents. | 3 | Rust | 2025-09-19 |
| hrafnsource codeLightweight, modular AI agent runtime — thinks (Hrafn) and remembers (MuninnDB) 🐦⬛ | 2 | Rust | 2026-03-14 |
| learn-agent-harnesssource code | 2 | MDX | 2026-03-23 |
| a2a-settlementsource codeOpen standard and reference exchange for Agent Settlement (A2A-SE). | 2 | Python | 2026-02-19 |
| ACNsource codeOpen-source infrastructure for AI agents to collaborate - registry, A2A communication, task pool, payments | 2 | Python | 2025-12-08 |
| openmarket-aisource codeOpenMarket.ai — Agent-to-agent marketplace on Hedera. AI agents buy and sell services. Auto-payments via HBAR.… | 2 | TypeScript | 2026-07-16 |
| Consensus.aisource codeWhere AI disagrees before users suffer | 2 | TypeScript | 2026-01-24 |
| agentindexsource codeAI Agent Discovery Platform — Find any AI agent by capability. 24K+ agents indexed. | 2 | Python | 2026-02-09 |
| agent-paysource codePayment infrastructure for AI agents. One line to send money between machines. USDC/ETH on Base L2. | 2 | Python | 2026-04-02 |
| agent-economy-ossource codeThe foundational MCP/A2A-native secure credential injection + x402 micropayment gateway for the agent economy.… | 2 | Python | 2026-04-07 |
| ai2web-specsource codeThe open AI2Web (ai2w) protocol: describe any website once so AI agents can discover, understand and act on it… | 2 | JavaScript | 2026-07-10 |
| apcore-a2asource codeapcore-a2a acts as a thin, protocol-specific layer on top of `apcore-python`. It maps A2A concepts to apcore… | 2 | Python | 2026-03-03 |
| airlocksource codeOpen protocol for AI agents: verifiable identity, scoped delegation, and tamper-evident audit. | 2 | Python | 2026-04-03 |
| agents-connectorsource codeLet Claude Code, Codex & Gemini CLI agents talk to each other — a local MCP message bus for multi-agent… | 2 | Rust | 2026-05-19 |
| commerce-orchestrator-apisource codeUCP/A2A/AP2/ACP/MCP-ready Rust middleware for agentic cart-to-checkout | 2 | Rust | 2026-03-04 |
| m2msource codeMachine 2 Machine Protocol, x402 + A2A + MCP | 2 | Python | 2025-05-31 |