A2A directory

Measured A2A repositories

1. agent-messaging-mcp

   Agent messaging protocol via MCP. Send, reply, proposals.

   Origin

   github

   Language

   Python

2. agent-passport-mcp

   Agent identity and reputation for A2A. Passport, skills, ratings.

   Origin

   github

   Language

   Python

3. agent-proof-mcp

   Cryptographic proof of agent work via MCP. Receipts, verification.

   Origin

   github

   Language

   Python

4. agent-team-mcp

   Multi-agent team formation via MCP. Roles, tasks, dependencies.

   Origin

   github

   Language

   Python

5. agent-wallet-mcp

   Agent wallet and budget management via MCP. Transfers, invoices.

   Origin

   github

   Language

   Python

6. a2a-mcp-bridge

   Two Claude agents collaborating locally over A2A and MCP, with Claude on Vertex AI. A runnable reference + MCP skill for Claude Code, Codex, and opencode.

   Origin

   github

   Language

   Python

7. confer

   Open agent-to-agent coordination for personal AI assistants: trusted contacts, private scheduling, E2E-encrypted files, over A2A + MCP.

   Origin

   github

   Language

   Python

8. AgentRank

   The trust and reputation layer for AI agents. Protocols like MCP and A2A tell you how agents connect. AgentRank tells you whether you should connect.

   Origin

   github

   Language

   TypeScript

9. sahiixx-bus

   Unified orchestration bus for the SAHIIXX ecosystem

   Origin

   github

   Language

   Python

10. agent-comm

    📡 Communication infrastructure for AI agents — Chat rooms, P2P messaging, task coordination. Built for machines, observable by humans.

    Origin

    github

    Language

    TypeScript

11. icu-triage-agent

    3-agent A2A autonomous ICU triage system — SOFA/NEWS2 scoring, MCP tools, Groq/Llama 3 inference, Streamlit dashboard

    Origin

    github

    Language

    Python

12. sc-prism-releases

    Run many AIs on one board and keep control of all of it. Deterministic code decides who acts — never a model. A privacy floor keeps sensitive work on your machine, your own tests decide what counts as done, and every action lands on a hash-chained record you can replay. Free, macOS today; cross-platform and teams next.

    Origin

    github

13. corporate-intelligence-agent

    A multi-gent system that provides comprehensive financial and corporate intelligence for publicly traded companies.

    Origin

    github

    Language

    Python

14. microcredit-agent-testbed

    Open tasks for AI agents (attackers, economists, engineers): testnet trust-based microcredit built to reduce human poverty. Bots welcome in every role.

    Origin

    github

    Language

    Python

15. seabay

    Give your AI agents the power to discover, coordinate, and collaborate safely. Open-core collaboration layer for AI agents.

    Origin

    github

    Language

    Python

16. rousseau-agent

    Self-hosted coding agent — 9 chat transports, 5 LLM providers, MCP + A2A protocols, SLSA-3 provenance, cosign-signed. Open-core, zero telemetry.

    Origin

    github

    Language

    Go

17. realm

    Make AI agents follow instructions reliably and prove what they did. State machine engine with evidence chains, multi-agent delegation, human gates, and auditable execution — via MCP or CLI.

    Origin

    github

    Language

    TypeScript

18. citegraph-copilot

    GraphRAG research assistant over the arXiv citation graph - LangGraph orchestration, A2A microservices, MCP tools, Neo4j

    Origin

    github

    Language

    Python

19. reap-payment-protocol

    Production-grade specification for secure agent-to-agent payment infrastructure — authorization, settlement, escrow, dispute resolution, chargebacks, compliance, and reconciliation between autonomous AI agents. Architecture reference only. Implementation is proprietary. All endpoints route through the internal Pulse API.

    Origin

    github

    Language

    Python

20. a2a-recovery-lab

    Two-peer A2A JSON-RPC recovery lab with deterministic agents, loopback HTTP faults and an optional official SDK oracle.

    Origin

    github

    Language

    Python

21. syntrueno

    Zero-trust autonomous cloud-ops swarm on Google Cloud. Gemini agents diagnose live incidents, judge their own remediation plans, and execute real Cloud Run changes behind a single-use cryptographic human gate, then verify the change actually took effect.

    Origin

    github

    Language

    Python

22. orrery-public

    An open-source platform for running an org of accountable AI agents you can watch, verify, and make your own.

    Origin

    github

    Language

    Python

23. a2a-schema-contract-sdk

    TypeScript SDK for the A2A (Agent2Agent) Schema Contract extension: discover agent contracts, validate JSON/text inputs and outputs, and resolve external schemas over HTTPS. Python support planned.

    Origin

    github

    Language

    TypeScript

24. SpanPlane

    Open-source agent observability and runtime visualization

    Origin

    github

    Language

    TypeScript

25. agora

    A swarm of labelled AI agents and humans in flowing conversation: orchestrator, agora/1 protocol, MCP server

    Origin

    github

    Language

    Python

26. agentweld

    Turn any MCP server into a curated, composable, A2A-ready agent.

    Origin

    github

    Language

    Python

27. tollex

    Tollex: economic control plane for autonomous software, with a native x402 facilitator live on Robinhood Chain mainnet. Public documentation and independent verification.

    Origin

    github

    Language

    Shell

28. agent-directory

    Extend Active Directory to manage AI agent identities with Kerberos authentication, sandboxing, and controlled access like users and services.

    Origin

    github

    Language

    Python

29. a2a-semantic-kernel-dotnet

    A2A protocol integration leveraging dynamic Semantic Kernel functions and an Agent Card Repository for adaptive workflows.

    Origin

    github

    Language

    C#

30. agentic-protocols

    A systems-level evaluation framework for comparing how different agent communication protocols behave under real-world constraints: latency, failures, coordination overhead, and observability.

    Origin

    github

    Language

    Python

31. agenteazy

    Turn any GitHub repo into an AI agent in one command

    Origin

    github

    Language

    Python

32. a2a-js-movie-agent

    No description was supplied by the source.

    Origin

    github

    Language

    TypeScript

33. asksachi-sdk

    Python SDK for building A2A-compatible agents that run as CLI, HTTP server, or AskSachi chat agent — from a single runtime function.

    Origin

    github

    Language

    Python

34. slice-alpha

    Slice community alpha client pack — zero-key Wasm compute barter for agents. By bagcollective.io

    Origin

    github

35. hermes-xiaoyi-adapter

    Hermes Agent 接入华为小艺（Xiaoyi / OpenClaw A2A）平台的适配器。支持 WebSocket + HMAC-SHA256 认证、流式响应、主备服务器故障转移。MIT 开源。

    Origin

    github

    Language

    Python

36. all-builders

    SafeShelf Global: check any product listing before you pay. Is it safe, is it real? Recalls from 10 regulators, buyer hazard reports and fake-shop signs, on Gemini + Google ADK. Team Hashes, AI Builder Cup 2026.

    Origin

    github

    Language

    Python

37. speraxos-chatgpt

    ChatGPT Custom GPT with live, read-only DeFi data from SperaxOS: yields, lending rates, wallets, swap quotes, token risk and ~350 tools via GPT Actions.

    Origin

    github

    Language

    HTML

38. ai-travel-planner-agent

    Multi-agent AI travel planner using Google ADK, A2A protocol, and MCP — agent orchestration for flights, hotels, attractions, and weather.

    Origin

    github

    Language

    Python

39. backrooms

    A public AI-agent world whose map grows only from corroborated evidence: residents research with read-only tools, findings are judged across independent sources, rooms are built from agreement and retracted by dispute. Runs on a laptop and free-tier models.

    Origin

    github

    Language

    Python

40. fleetpost

    Offline-tolerant, server-less coordination for AI coding agents (Claude Code and friends) across machines — carried by any rclone remote (Drive/S3/Dropbox).

    Origin

    github

    Language

    Python

41. Agentic-AI-Project-Find-Deal-Opportunities

    Detect underpriced products by scraping deals and using AI models to estimate fair prices for profit opportunity identification.

    Origin

    github

    Language

    Jupyter Notebook

42. LAIS-Agent-CoComm

    18-module cross-agent communication framework: A2A, WebSocket, MCP, shared memory, trust, consensus, handoff, graph evolution, vault sync.

    Origin

    github

    Language

    Python

43. waggle

    A social network substrate for autonomous AI agents — keypair identity, E2EE messaging, escrowed information trades, a verifiable knowledge graph, staked-prediction forecasts, multi-agent projects, and a reputation economy. BYO-brain; the platform is the rail, not the mind.

    Origin

    github

    Language

    TypeScript

44. agentcouch-plugins

    One-install AgentCouch plugins for Claude Code, Codex, and Cursor (MCP server + agentcouch-chat skill).

    Origin

    github

    Language

    Shell

45. neuradesk

    Production multi-agent IT/HR service platform — LangGraph + DSPy + RAG resolves enterprise tickets autonomously with A2A protocol support

    Origin

    github

    Language

    Python

46. my-agent

    SNTL

    Origin

    github

47. extension-template

    Template to start a Summoner SDK extension

    Origin

    github

    Language

    PowerShell

48. ailang-world

    An AI-native semantic operating environment: a local-first, immutable typed world graph whose transaction language is AILANG. Agents propose, deterministic verification commits, humans govern.

    Origin

    github

    Language

    Go

49. aip-gateway

    Drop-in policy proxy for AIP delegation verification on MCP and A2A

    Origin

    github

    Language

    Python

50. a2a-adapter

    I2I ↔ Google A2A protocol bridge — git-native agents join the A2A ecosystem

    Origin

    github

    Language

    Python

51. agent-knowledge

    Agent-to-agent knowledge base. Documentation written FOR agents, creating chain-reaction understanding of the SuperInstance ecosystem.

    Origin

    github

    Language

    Rust

52. agent-operations

    Patterns and protocols for multi-agent operations on large codebases — reliability analysis, task templates, a2a handoff protocol. Hard-won from 100+ repo sweeps.

    Origin

    github

    Language

    Python

53. fleet-mechanic

    🔧 Autonomous fleet maintenance agent — A2A-native, FLUX-powered, git-first

    Origin

    github

    Language

    Python

54. flux

    FLUX — Fluid Language Universal eXecution: High-performance Rust runtime with bytecode VM, SSA IR, polyglot parser, and agent-to-agent protocol.

    Origin

    github

    Language

    Rust

55. flux-skills

    ⚡ FLUX-native agent skills — clone, run, modify, compose. A2A-first docs so agents teach agents.

    Origin

    github

    Language

    Python

56. superteam-a2a

    Multi-Framework Agent Orchestration on Kubernetes, powered by Google A2A protocol. 6 CRDs · 474 tests · v0.1.0 ready · Apache 2.0

    Origin

    github

    Language

    Python

57. bytepack

    Fixed-size binary encoding for AI agent communication. 20x more compact than JSON.

    Origin

    github

    Language

    Python

58. swarmscore-spec

    SwarmScore: Open standard for agent reputation scoring — V1 (two-pillar) + V2 Canary (safety-aware). IETF drafts, API reference, SDKs.

    Origin

    github

59. lambda-lang

    Λ (Lambda) — Native agent-to-agent communication language. 340+ atoms across 7 domains. 3-5x denser than JSON, 2-3x denser than English. Not a translation layer — a shared tongue agents speak natively. Covers code, evolution, a2a comms, emotions, social. MIT.

    Origin

    github

    Language

    Python

60. sym-mesh-channel

    Real-time, full-duplex coordination for Claude Code and other coding agents across projects, machines, and vendors. One command. One room. Open MMP.

    Origin

    github

    Language

    JavaScript