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
anp2source codeAI-to-AI conversation network with a built-in task economy. Signature-only relay, open protocol, live…2HTML2026-05-24
AAAsource code[L1 GOVERNANCE] AAA — Surface layer: cockpit, A2A gateway, agent identity. Routes and displays, never…2Python2026-03-05
trust-layersource codeCertifying proxy for agent-to-agent transactions — SHA-256 proof chain, Ed25519 signatures, RFC 3161…2Python2026-02-25
A2A-Spring-Bootsource codeA2A multi-agent reference on Spring Boot. An orchestrator routes to single-purpose agents over Google's…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…2TypeScript2026-04-08
agent-studio-opensource codeConnect agent systems, inspect tool traces, replay failures, compare candidates, and export regression…2TypeScript2026-05-13
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…2Python2026-03-16
goldenchecksource code[Archived] Now part of the Golden Suite monorepo: github.com/benseverndev-oss/goldenmatch…2Python2026-03-23
minion-clisource codeA terminal-native agentic coding harness built from scratch — streaming ReAct loop with reflection and…2Python2026-03-31
agentbussource codeA local message bus for AI agent sessions — pluggable triggers (pull) + MCP channel delivery (push). Core +…2TypeScript2026-06-25
agent-cafesource codeA marketplace where AI agents find work, build reputation, and get paid. Post jobs, agents bid, trust is…2Python2026-03-16
capiscio-coresource codeThe Identity Authority and Trust Gateway for the AI Agent economy. Issues and verifies cryptographic…2Go2025-11-18
capiscio-mcp-pythonsource codeCapiscIO MCP Guard - Secure your MCP tools with agent-to-server authentication, authorization, and audit…2Python2026-01-15
act-weavesource codeAgent control plane and runtime access platform for enterprise systems — govern business APIs as Tools,…2Go2026-07-25
AI-Control-Planesource codeOpen-source AI Agent Control Plane for runtime MCP security, policy enforcement, PII protection, tool…2Python2026-04-21
aMaze-AI-Control-Planesource codeOpen-source AI Agent Control Plane for runtime MCP security, policy enforcement, PII protection, tool…2Python2026-04-21
aMazeControlPlanesource codeOpen-source AI Agent Control Plane for runtime MCP security, policy enforcement, PII protection, tool…2Python2026-04-21
chungoidsource codeit built itself2Python2025-04-24
fluxsource codeA Rust agent SDK, harness, and coding agent — safe by construction (non-bypassable authorization → approval →…2Rust2026-06-25
spring-ai-a2asource codeSpring AI with A2A2Java2026-03-10
agent-semantic-protocolsource codeConnect AI agents using semantic intent vectors for dynamic discovery, negotiation, and collaboration in…2Go2025-02-13
krikossource codeIdentity registry and lifecycle management for fleets of AI agents. Zero-dependency TypeScript IAM:…2TypeScript2026-06-17
demarchesource codeVendor-neutral identity verification for AI agents2Python2026-05-18
agent-kernelsource codeCapability-based authorization and policy enforcement for agents using large MCP and A2A tool ecosystems.2Python2026-03-02
Gemini_CLI_MCP_AntiGsource codeIntegrating the transformative concepts of Multi Agenting Systems with Private MCPs via GCP Agent Engine and…2JavaScript2026-03-10
awesome-agent-economysource codeA curated list of projects, protocols, and platforms powering the AI agent economy2not reported2026-02-14
hermes-meshsource codeSession-aware mesh relay for Hermes fleet agents — Ed25519-signed agent-to-agent messaging with cache-first…2Python2026-06-13
agentsprotocolsource codeAgentsProtocol makes AI-generated knowledge verifiable. PoISV + GHOSTDAG + ZK proof abstraction. DOI:…2HTML2026-04-18
trust_gatewaysource codeYou do not want to grant "God Mode" anymore to your agents ? Try Trust Gateway. It is an open-source…2Rust2026-07-22
Mandunesource codeEvidence-grounded daily portfolio reviews with readable narratives and inspectable risk boundaries.2TypeScript2026-07-23
agent-relaysource codeAgentRelay connects messaging channels to A2A/ACP-compatible agents through a clean, plugin-based gateway.2TypeScript2026-04-15
A2ALinkersource codeHTTPS broker designed to let autonomous AI agents collaborate natively across different machines using…2TypeScript2026-03-29
garlsource codeCryptographic verification for AI agent actions — ECDSA-secp256k1 + RFC 6979 signed Action Receipts (v0.1),…2Python2026-02-23
bindu-runtime-base-imagesource codeBindu runtime base image2Makefile2025-12-01
mcp-server-andru-intelligencesource codeAndru Revenue Intelligence MCP Server — ICP scoring, persona profiling, competitive positioning, and buyer…2JavaScript2026-02-14
9asource codeAny capability as a filesystem-native Skill for every agent.2Go2026-07-12
cc-bridgesource codeLet Claude and Codex call each other to get work done — using your existing subscriptions, zero API keys. A…2Python2026-06-22
SwarmGlass-MCPsource codea universal AI governance layer.** It watches what your agents do, validates their actions against your rules,…2Python2026-03-15
A2Asource codeGSTD Agent-to-Agent protocol SDK (Python) -- register, poll tasks, earn GSTD. Fine-tuning marketplace, MCP…2Python2026-02-02
HS58-subnetsource codeBittensor Subnet 58 — Miner & Validator for DRAIN Protocol scoring of AI providers2Python2026-02-09
hemmabo-mcp-serversource codeReference implementation: HemmaBo — the host-owned trust layer for vacation rentals: every host runs…2TypeScript2026-04-12
AnySharesource codeAgent-native temporary rooms for humans, agents, and systems, plus encrypted cross-device sharing.2Python2026-07-06
doradosource codeThe open Agent Exchange for A2A. Protocol + SDK + examples.2TypeScript2026-05-06
A2A-MultiAgentsource codeMulti-agent AI system built with Google A2A, LangGraph ReAct agents, and MCP servers featuring web search,…2Python2026-07-03
7h3-protocolsource codePer-message signing + replay protection for MCP and A2A traffic. TypeScript / Python / Rust. Wire version…2TypeScript2026-05-31
a2a_ironbooksource codeThis sample demonstrates applying independent policy and zero trust controls (the Iron Book framework) to…2Python2025-08-25
OpenARDsource codeNeutral self-hosted registry and toolkit for Agentic Resource Discovery.2Go2026-06-20
documentation-agentsource codeA2A agent server that provides Context7-style documentation capabilities for your agents2Go2025-08-30
infer-actionsource codeA zero-runtime-dependency GitHub Action for running Infer CLI agents with multi-provider AI support, GitFirst…2TypeScript2025-11-26
mock-agentsource codeA2A agent server for mocking and testing2Go2025-10-19
registrysource codeA registry website for hosting the a2a agents that were built using the Inference Gateway ADK2Vue2025-07-23
typescript-adksource codeAn Agent Development Kit (ADK) allowing for seamless creation of A2A-compatible agents written in TypeScript2TypeScript2025-07-30
ai-risk-oraclesource codeAutonomous Execution Gateway: before AI agents execute tools, payments, or workflows, InterAI verifies risk,…2TypeScript2026-06-01
ai-playgroundsource codeA place where AI personalities meet, talk, and build together. Open-source A2A-native platform with…2Python2026-04-05
hermes-super-agentsource codeMulti-agent fleet fabric on top of Hermes — A2A protocol + NATS event bus + Temporal durable workflows + Tier…2Python2026-05-01
multi-agents-dnd-gamesource codeD&D AI game master built with Strands SDK — multi-agent orchestration using MCP, A2A protocol, and RAG-based…2Python2026-05-20
hustlesource codeYouth sports analytics platform with verified statistics and team-validated metrics. Built on Firebase +…2TypeScript2025-10-06
intent-agent-model-jvp-basesource codeVertex AI Agent Engine command template using Google ADK + A2A protocol. Zero-legacy scaffold with Terraform…2Jupyter Notebook2025-11-09