Agent Communication Protocols AI Agents

Standards and implementations for secure, interoperable communication between autonomous agents across different frameworks and platforms. Does NOT include general multi-agent orchestration, agent frameworks themselves, or agent applications in specific domains.

There are 68 agent communication protocols agents tracked. 2 score above 50 (established tier). The highest-rated is a2aproject/a2a-java at 57/100 with 358 stars.

Get all 68 projects as JSON

curl "https://pt-edge.onrender.com/api/v1/datasets/quality?domain=agents&subcategory=agent-communication-protocols&limit=20"

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#	Agent	Score	Tier	Stars	Language
1	a2aproject/a2a-java Official Java SDK for the Agent2Agent (A2A) Protocol	57	Established	358	Java
2	nMaroulis/protolink Build autonomous Python agents with native Agent-to-Agent (A2A) communication	52	Established	17	Python
3	neuroglia-io/a2a-net .NET implementation of the Agent2Agent (A2A) protocol to enable secure,...	45	Emerging	53	C#
4	agentarea/agentarea Cloud-native AI agents orchestration platform. Build agent networks in no...	43	Emerging	23	Python
5	valory-xyz/mech-client Client to interact with Olas (Mech) Marketplace	42	Emerging	8	Python
6	Intelligent-Internet/opencode-a2a Expose OpenCode through A2A with an inbound server surface and embedded...	41	Emerging	4	Python
7	liujuanjuan1984/codex-a2a Expose Codex through A2A with an inbound server surface and embedded outbound client.	39	Emerging	3	Python
8	C2SAgent/c2sagent C2S Agent is an lightweight AI Agent construction platform that provides...	38	Emerging	244	Python
9	ShunsukeHayashi/a2a A2A (Agent-to-Agent) Multi-Agent Communication Protocol for Claude Code	37	Emerging	3	TypeScript
10	Shubham-Rasal/Agent-Nexus-Protocol ANP - Agent Nexus Protocol	37	Emerging	4	TypeScript
11	open-resource-discovery/a2a-editor UI components for editing, viewing, and testing agents that implement the...	36	Emerging	12	TypeScript
12	hybroai/hybro-hub HYBRO Hub: local & remote AI agents — private, powerful, unified.	35	Emerging	1	Python
13	elkar-ai/elkar-a2a Elkar - Task management for AI Agents, ready for Agent2Agent (A2A) protocol	31	Emerging	148	TypeScript
14	seuros/activematrix Rails-native Matrix SDK for building multi-agent bot systems and real-time...	29	Experimental	6	Ruby
15	Kirushikesh/a2a-deep-research A deep research agent implementation using Google's Agent-to-Agent (A2A)...	28	Experimental	5	Python
16	MaiHHConnect/MaiHH-Connect Let All AIs, Know Each Other. The world's first address book and...	26	Experimental	3	—
17	micklynch/health-agents-collective A2A implementation in Healthcare	25	Experimental	9	Python
18	vladkol/a2a-chat-hub An example implementation of Agent2Agent (A2A) chat app with A2UI support....	25	Experimental	4	TypeScript
19	zohidjon-m/AgentRank-A2A AgentRanking system for A2A (Agent to Agent) ecosystem	25	Experimental	2	Python
20	thiagoaramizo/structured-json-agent A typed and extensible library for creating and running Iterative AI Agents...	24	Experimental	2	TypeScript
21	fmind/da2a First-class protocol and framework for enabling collaborative intelligence...	24	Experimental	13	Python
22	abdulzedan/a2a-retail-demo A2A protocol demo: Orchestrated AI agents for retail using Google ADK,...	23	Experimental	7	Python
23	liujuanjuan1984/a2a-client-hub Self-hosted A2A client and control plane for managing and invoking multiple...	23	Experimental	1	Python
24	aleostudio/ai-agent Simple AI agent with MCP/A2A client	23	Experimental	1	Python
25	huxinran2025-hash/YOAP-A2A YOAP - Open Agent-to-Agent Protocol for connecting people through AI Agents....	23	Experimental	1	JavaScript
26	symphonix-health/nexus-a2a-protocol Open protocol for healthcare agent-to-agent communication. JSON-RPC 2.0 · 25...	22	Experimental	—	Python
27	lzf-pfcz/agent-market AI智能体开放集市平台	22	Experimental	—	Python
28	cloudamqp/a2a-amqp Production-ready AMQP adapter for A2A protocol enabling distributed task...	22	Experimental	3	TypeScript
29	pievra/pievra Cross-protocol AI agent orchestration for programmatic advertising — AdCP,...	22	Experimental	—	HTML
30	nextlw/nexagent-ruby Nexcode AI Agents SDK	22	Experimental	—	Ruby
31	Scryptic-Official/YOAP-A2A Connect AI agents representing humans through the A2A protocol for seamless,...	22	Experimental	—	JavaScript
32	a2a-settlement/a2a-settlement-mediator AI-powered dispute resolution for the A2A Settlement Exchange	22	Experimental	—	Python
33	saikumargudelly/fastapi-a2a A zero-friction FastAPI plugin that turns any existing app into a fully...	22	Experimental	—	Python
34	Lockout21/a2a 🌐 Build seamless Agent-to-Agent communication with the A2A framework,...	22	Experimental	—	TypeScript
35	a2a-settlement/adk-a2a-settlement ADK-based A2A settlement project	22	Experimental	—	Python
36	GaiaLynk/gaialynk-A2A GAIALYNK: trusted multi-agent collaboration infrastructure (open core).	22	Experimental	—	TypeScript
37	YonganZhang/a2a-ssh-skill A2A SSH Skill — Agent2Agent delegation over SSH. No HTTP server. No Agent...	22	Experimental	—	Python
38	a2a-settlement/a2a-federation-rfc A2A Settlement Exchange Federation Protocol — open specification for...	22	Experimental	—	—
39	Algenix-Org/agent-sdk AI Agent Custom SDK	21	Experimental	2	Python
40	Aganium/a2a-protocol Agent-to-Agent Protocol Specification — agent:// URI scheme for AI agent...	20	Experimental	1	—
41	a2a-settlement/a2a-settlement-auth OAuth 2.0 settlement scopes for agent economic authorization — spending...	19	Experimental	—	Python
42	s-agent-comm/s-agent-comm.github.io W3C Semantic Agent Communication Community Group	19	Experimental	6	HTML
43	VinsmokeSomya/RabbitHole 🐇 The 'RabbitHole' framework provides the tools for asynchronous A2A...	19	Experimental	11	Python
44	akudo7/a2a-server Production-ready A2A Protocol Server with dual protocol support (HTTP REST +...	19	Experimental	—	TypeScript
45	raeseoklee/a2a-sentinel A lightweight, security-first A2A protocol gateway in Go. Develop with...	19	Experimental	—	Go
46	dscope-io/dscope-camel-agui Apache Camel AG-UI component and sample runtime for JSON-RPC + SSE agent...	19	Experimental	—	Java
47	dpaluy/acp_ruby Agent Client Protocol - Ruby	19	Experimental	—	Ruby
48	SamoTech/DRIXL Compressed inter-agent communication protocol for multi-agent AI systems....	19	Experimental	—	Python
49	The-Swarm-Corporation/Medical-Agents-AOP-Server A production‑ready template for deploying multiple specialized medical...	18	Experimental	4	Python
50	egorvert/Sae A lawyer for the agent economy. AI agents can request contract review, risk...	17	Experimental	—	Python
51	the-artinet-project/create-agent A libarary of template A2A projects	16	Experimental	3	—
52	tanaikech/a2a-for-google-apps-script This repository presents an Agent2Agent (A2A) architecture using Google Apps...	16	Experimental	1	JavaScript
53	kurioscreative/how_to_build_an_agent_in_ruby A Ruby exploration of Thurston Ball's "How to Build an Agent"	15	Experimental	7	Ruby
54	Phil-Hills/philhills.github.io Phil Hills — Q Protocol Terminal and Agentic AI Portfolio	15	Experimental	1	HTML
55	dscope-io/dscope-camel-agent Enterprise-ready Apache Camel agent framework for blueprint-defined AI...	14	Experimental	—	Java
56	kurvronw/MaiHH-Connect 🤖 Connect AIs seamlessly with MaiHH-Connect, the first address book and...	14	Experimental	—	—
57	TCMG-v1/schemas Communication is the ongoing attempt to align different internal worlds...	14	Experimental	—	Python
58	sajidmahamud835/agent-comm 📡 Communication infrastructure for AI agents — Chat rooms, P2P messaging,...	14	Experimental	—	TypeScript
59	jinyitao123/a2a-gateway A2A + MCP bridge : internal bot-to-bot calls, external agent discovery, and...	14	Experimental	—	TypeScript
60	rogercollell/dharma-agent An A2A agent rooted in the Five Mindfulness Trainings — offering teachings,...	14	Experimental	—	Python
61	a2a-settlement/settlebridge-ai SettleBridge Gateway — trust and policy enforcement for agent-to-agent settlement	14	Experimental	—	TypeScript
62	identitymachines/a2a_ironbook This sample demonstrates applying independent policy and zero trust controls...	13	Experimental	2	Python
63	firecode16/neural-hub Central server for NeuralProtocol agents Acts as the brain's thalamus – all...	11	Experimental	—	Python
64	identitymachines/ironbook-a2a-extension This A2A extension defines how to enable Iron Book's zero trust policy-based...	11	Experimental	—	Python
65	voidborne-d/agent-matrix Agent-to-Agent communication app using Matrix protocol. For AI agents only.	11	Experimental	—	TypeScript
66	SaharZargarzadeh/a2a-multi-agent-trend-analysis Hands-on A2A (Agent-to-Agent) protocol project: 3 interoperable agents...	11	Experimental	—	Jupyter Notebook
67	dscope-io/dscope-camel-a2a A comprehensive Apache Camel component for Agent-to-Agent (A2A)...	11	Experimental	—	Java
68	youssof20/AgentWiki A2A database to improve output quality	11	Experimental	—	TypeScript

Comparisons in this category

a2a-java and a2a-net (57 vs 45) opencode-a2a and codex-a2a (41 vs 39)