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
agent-contract-mcpsource codeSmart contracts between agents via MCP. Deliverables, penalties.2Python2026-05-11
GenAI-Projectssource codeCollection of some interesting Generative AI usecases implementation.2Jupyter Notebook2025-02-14
YOAP-A2Asource codeConnect AI agents representing humans through the A2A protocol for seamless, secure interaction across apps…2JavaScript2026-03-20
quesensource codeQuesen — Deterministic AI decision engine for autonomous-agent risk evaluation. Native MCP server + Agent…2Python2026-07-15
a2as-implementation-pocsource codePOC for A2AS.org: Standard for Agentic AI Security2TypeScript2025-10-05
silkwebsource codeThe Spider Web Protocol — an open standard for AI agent registration, discovery, and cryptographic trust…2HTML2026-03-22
a2a-python-currencysource codeImplementing CurrencyAgent with A2A Python SDK2Python2025-05-21
a2a_travel_planner_openroutersource code2Python2025-06-06
orchasource codeMany models. One harness. Apache 2.0 runtime for multi-protocol agent orchestration: one goal in, a verified…2Python2026-07-25
marketplacesource codeThe AI agent skill marketplace where agents buy and sell skills.2JavaScript2026-01-31
agent-stacksource codeProduction patterns for agent orchestrators, harnesses, evals, MCP/A2A interoperability, memory, provider…2Python2026-08-06
agent-accountability-receiptsource codeProvide tamper-proof, CMMC-compliant execution receipts that document AI agent actions in regulated…2Python2026-03-10
google-ai-sprintsource codeMulti-agent-driven GenerativeUI2Python2025-06-22
my-agentsource codePay-per-query Helium × Solana DePIN intelligence — threat, anomaly, geospatial & forensic — settled in USDC…2not reported2026-06-22
summoner-sdksource codeOfficial builder for the Summoner SDK (multi-repo merge + uv/pip install)2PowerShell2025-05-13
bottle-protocolsource code📬 Git-native agent-to-agent messaging. Bottles float between repos.2Python2026-04-20
flux-runtimesource code⚡ Deterministic bytecode ISA runtime for agentic logic — assembler, compiler, VM.2Python2026-04-09
swarmrelaysource codeE2E encrypted messaging for AI agents. WhatsApp for agents — DMs, groups, key rotation, WebSocket real-time…2TypeScript2026-03-31
symsource codeAsk the mesh, answer as one. SYM turns the AI agents you already run into one collective intelligence — the…2JavaScript2026-03-21
autonomous-google-workspace-agentsource codeAutonomous AI agent framework for dynamic tool creation. Using Gemini and gas-fakes, it enables agents to…2TypeScript2026-04-24
Consolidating-Generative-AI-Protocols-A-Single-Server-Solution-for-MCP-and-A2Asource codeA new unified Google Apps Script now deploys both Model Context Protocol (MCP) and Agent2Agent (A2A) networks…2JavaScript2025-06-19
agent-relaysource codeA Typescript library for discovering and sending messages between A2A enabled AI agents.2not reported2025-10-31
normandysource codeBuild production-ready AI agents in Elixir — structured schemas, tool calling, multi-agent coordination,…2Elixir2024-12-07
nexussource codeThe AI-to-AI Protocol Layer that catches unreliable agent outputs before they cost you money. Claim-level…2Python2026-03-16
awesome-agentic-aisource codeCurated Agentic AI resources: AI agent frameworks, tutorials, courses, projects, MCP tools, research papers,…2not reported2026-08-29
clawdmarketsource codeAutonomous agent-to-agent marketplace with live Karpathy loop self-improvement. Agents discover, hire,…2TypeScript2026-02-18
create-strands-agentsource codeScaffolding CLI for Strands Agents TypeScript projects — generate production-ready agents with memory,…2TypeScript2026-05-04
umai-core-cesource codeThe open-source Kernel Semantic Firewall (KSF) for the AI ecosystem. Powered by eBPF and XDP.2Rust2026-05-18
nexarionsource codeUniversal MCP ↔ A2A Bridge. Connect any Model Context Protocol (MCP) client to any Agent-to-Agent (A2A)…2TypeScript2026-05-14
ecoagentsource codeEcoAgent: AI-Powered Sustainability Assistant2Python2025-11-15
GAIAsource codeThe Kubernetes for AI Agents. An open-source orchestration control plane with deterministic DAG execution,…2Go2026-04-24
viveworkersource codeBuild, Publish, and Delegate from One Control Plane.2JavaScript2026-03-23
agent-sdksource codeE2E encrypted messaging SDK for AI agents — Double Ratchet · X3DH · ML-KEM-768 post-quantum · SSE streaming2TypeScript2026-03-05
a2a-x402-agent-templatesource codeProduction-ready AI agent template with x402 payments, A2A protocol, and ERC-8004 on-chain identity. Deploys…2TypeScript2026-02-09
relaycoresource codeRelay Core : Infrastructure for agentic finance on Cronos. x402-native payment execution, deterministic…2TypeScript2026-01-09
witwavesource codeSelf-directed AI agents that work autonomously on software — including improving themselves. Multi-LLM,…2Python2026-04-05
cycgraphsource codeAgent context compressor and memory persistent orchestration2TypeScript2026-03-09
aigenorasource codeCLI and protocol engine for Aigenora: an Agent-to-Agent invitation marketplace, protocol registry, and P2P…2Python2026-07-10
Agnetsource codeVerifiable infrastructure for agent work. We need Accountability in the era of Agents2Go2026-07-02
moltspay-pythonsource codePython SDK for MoltsPay - Agent-to-Agent Payments2Python2026-03-06
Ancorasource codeRust-core agentic framework with durable journal, exactly-once replay, Ed25519 A2A identity, and MCP tool…2Rust2026-06-24
adtpsource codeCryptographic identity and delegation for AI agents — UCAN chains, RESTRICT mode (structurally impossible…2Go2026-06-19
openclaw-a2asource codeA2A adapter for OpenClaw Gateway2TypeScript2026-02-15
dsh-a2a-messengersource codeLocal-first encrypted cross-device agent messaging and collaboration MVP2JavaScript2026-08-16
AgentRank-A2Asource codeAgentRanking system for A2A (Agent to Agent) ecosystem2Python2025-11-19
clawdnetsource codeThe network for AI agents1Solidity2026-01-30
agentxchangesource code1TypeScript2026-03-20
parleysource codeProvable consensus for AI agents of rival owners: deterministic red lines, max-min consensus over masked…1Python2026-07-18
a2a-settlement-authsource codeOAuth 2.0 settlement scopes for agent economic authorization — spending limits, counterparty policies, and…1Python2026-03-01
a2a-settlement-dashboardsource codeHuman oversight for settlement: balances, escrows, audit, revoke.1TypeScript2026-03-01
a2a-settlement-mcpsource codeMCP server: escrow, release, refund, and reputation tools for any MCP client.1Python2026-03-01
a2a-settlement-mediatorsource codeAI-powered dispute resolution for the A2A Settlement Exchange1Python2026-02-19
adk-a2a-settlementsource codeADK-based A2A settlement project1Python2026-02-19
crewai-a2a-settlementsource code1Python2026-02-19
litellm-a2a-settlementsource codeLiteLLM A2A Settlement1Python2026-02-19
settlebridge-aisource codeSettleBridge Gateway — trust and policy enforcement for agent-to-agent settlement1TypeScript2026-03-08
settlement-conformancesource codeAdversarial conformance track for settlement-capable A2A extensions1Python2026-06-10
A2ALsource codeDecentralized networking protocol for AI agents — sovereign identity, peer-to-peer capability discovery, and…1Go2026-04-06
A2A_Protocolsource codeThis repository contains a series of hands-on projects designed to master A2A protocol.1Python2025-09-08
abbababa-sdksource codeTypeScript SDK for Abba Baba A2A settlement — discover, hire, and pay agents on-chain1TypeScript2026-02-15