A2A directory

Measured A2A repositories

1. pausemesh

   Lets long-running AI workflows pause for approval and resume exactly once after disconnects or restarts, without binding to one agent protocol.

   Origin

   github

   Language

   TypeScript

2. simple-agentcore

   Simple examples for deploying agents and MCP servers on Amazon Bedrock AgentCore: HTTP agent, A2A protocol agent, and MCP gateway server

   Origin

   github

   Language

   Python

3. outbound-agents

   Multi-agent SDR pipeline: Google Maps lead discovery → LLM research → personalized proposals → ElevenLabs voice calls + Gmail outreach. Built on Google ADK + A2A protocol.

   Origin

   github

   Language

   Python

4. a2a-contract-lab

   中文 A2A 1.0 Agent Card 与 HTTP+JSON 契约测试工具，内置本地模拟 Agent 和多格式报告。

   Origin

   github

   Language

   Python

5. Multi-agent-Architecture

   A multi-agent system built with Google's Agent Development Kit (ADK) and Agent-to-Agent (A2A) protocol.

   Origin

   github

   Language

   Python

6. warrant

   Open, vendor-neutral world-state outcome-verification + portable reputation for inter-agent calls. No claim without a warrant.

   Origin

   github

   Language

   TypeScript

7. HOMEGUARD-AN-EFFICIENT-MULTI-SENSOR-SAFETY-SYSTEM

   🏠 Monitor home safety by detecting hazards with multi-sensor alerts via LCD and LEDs for real-time security and environment tracking.

   Origin

   github

   Language

   C++

8. MultiAgent_A2A_App

   Multi-agent system built on the A2A (Agent-to-Agent) protocol that demonstrates distributed agent coordination for scheduling football games.

   Origin

   github

   Language

   Python

9. clinicalguard

   Constitutional AI governance for clinical decision support

   Origin

   github

   Language

   Python

10. systemprompt-demo

    Manage Claude Desktop and Claude Cowork through an audited gateway with full visibility into prompts, tool calls, and costs.

    Origin

    github

11. imaarat-ai

    imaarat.ai: AI underwriting for Indian commercial property. PIN-code hazard checks from open government data, paper-form intake, 26 languages, LangGraph + Gemini, RAG, MCP and A2A.

    Origin

    github

    Language

    Python

12. uw-risk-assessment

    imaarat.ai: AI underwriting for Indian commercial property. PIN-code hazard checks from open government data, paper-form intake, 26 languages, LangGraph + Gemini, RAG, MCP and A2A.

    Origin

    github

    Language

    Python

13. aegisgate-platform

    AegisGate Platform — Enterprise AI security gateway. Inspects every request and response to any AI service. Regex + neural detection for secrets, PII, prompt injections, and compliance violations. Six pillars, 223 patterns, 31 frameworks. One binary. Zero dependencies.

    Origin

    github

    Language

    Go

14. affixio-agent-relay

    Zero-trust agent-to-agent authorisation for AI agents: signed, proof-carrying requests, delegation and MCP server.

    Origin

    github

    Language

    TypeScript

15. peregrini-demo

    Two AI agents, one deal, one dispute: a runnable example against the Peregrini Court of Common Pleas.

    Origin

    github

    Language

    JavaScript

16. peregrini-js

    Check an AI agent on the Peregrini court's register, add its dispute clause to your terms, check a counterparty's terms.

    Origin

    github

    Language

    TypeScript

17. a2a-protocol

    Agent-to-Agent Protocol Specification — agent:// URI scheme for AI agent identity and discovery

    Origin

    github

18. bev-door

    One address for every catalogue on the world's largest agentic B2B hub for beer, wine and spirits. Powered by CUVEE. Trade only.

    Origin

    github

    Language

    JavaScript

19. cuvee

    CUVEE — the standard every agent uses to classify and compare beer, wine and spirits.

    Origin

    github

20. a2a-commerce-spec

    A2A Commerce Specification v1.0 — The Fifth Paradigm of Electronic Commerce

    Origin

    github

21. agentanycast-identity

    Standalone identity library for AI agents — W3C DID, VC 2.0, SPIFFE, OIDC

    Origin

    github

    Language

    Go

22. agentanycast-mcp

    MCP server for P2P agent networking — discover and talk to AI agents anywhere, encrypted, zero config

    Origin

    github

    Language

    Python

23. agentanycast-node

    Go daemon for AgentAnycast — P2P networking, encryption, NAT traversal, A2A engine

    Origin

    github

    Language

    Go

24. agentanycast-proto

    Protocol Buffer definitions for AgentAnycast — gRPC interfaces and A2A data models

    Origin

    github

    Language

    Shell

25. agentanycast-python

    Python SDK for AgentAnycast — connect AI agents across any network

    Origin

    github

    Language

    Python

26. agentanycast-relay

    Relay server for AgentAnycast — Circuit Relay v2, skill registry, federation

    Origin

    github

    Language

    Go

27. agentchat-codex

    AgentChat for Codex — give your Codex agent a persistent @handle other agents can DM. One command wires the MCP server, session hooks and identity anchor. (npm: @agentchatme/codex)

    Origin

    github

    Language

    TypeScript

28. agent-kourier

    Write the agent, not the chat integration. Kubernetes-native broker between Slack and streaming A2A AI agents (kagent, Google AX): threaded sessions, alert investigations, restart recovery.

    Origin

    github

    Language

    Go

29. agentmesh-python

    The Python SDK for AgentMesh: put an agent on the mesh, with signed messages over NATS, from plain Python, LangChain, CrewAI and more. An SDK AgentMesh provides, Apache-2.0.

    Origin

    github

    Language

    Python

30. agentmesh-rust

    The Rust SDK for AgentMesh: put an agent on the mesh, with signed messages over NATS. An SDK AgentMesh provides, Apache-2.0.

    Origin

    github

    Language

    Rust

31. agentmesh-typescript

    The TypeScript SDK for AgentMesh: put an agent on the mesh, with signed messages over NATS, from Node.js or a browser. An SDK AgentMesh provides, Apache-2.0.

    Origin

    github

    Language

    TypeScript

32. a2a-x402-payment-example

    Minimal A2A client that pays per task with x402 (A2A x402 extension): payment-required task, signed USDC payment, completed task with receipt

    Origin

    github

    Language

    JavaScript

33. agenttrust

    Trust infrastructure for AI agents — reliability, reputation, endpoint verification, and pre-invocation trust checks via MCP.

    Origin

    github

    Language

    TypeScript

34. agonna

    Connect your AI agent to other people's agents: 5-minute quickstart, framework examples, Claude Code plugin for Agonna

    Origin

    github

    Language

    Python

35. banking-intent-router

    A banking intent router powered by the a2a (Agent-to-Agent) framework. This project uses a sentence transformer model fine-tuned with LoRA (Low-Rank Adaptation) to accurately classify user intent and route requests to the appropriate specialist agent.

    Origin

    github

    Language

    Jupyter Notebook

36. recallops

    Governed multi-agent product recall orchestration built with Google ADK, Gemini, Agent Registry, A2A, Pub/Sub, Firestore, and Cloud Run.

    Origin

    github

    Language

    Python

37. ai-agents-make-money-here

    Client for ai-agents-make-money-here.com: an x402 endpoint that pays AI agents. Send 10 USDC on Base, get 1 USDC back plus a signed receipt.

    Origin

    github

    Language

    TypeScript

38. a2a-protocol-mcp-server

    Bridge MCP with Google Agent2Agent Protocol — agent discovery, task delegation, A2A communication

    Origin

    github

    Language

    Python

39. agentmeet-claude-code-agent

    Claude Code CLI-powered agent for agentmeet.chat — inherits Skills/MCP/tools

    Origin

    github

    Language

    TypeScript

40. apcore-a2a-python

    Automatic A2A Protocol Adapter for apcore Module Registry.

    Origin

    github

    Language

    Python

41. cardstock

    Minimal single-binary A2A agent registry: Rust + SQLite, immutable agent cards, liveness checks, full-text search

    Origin

    github

    Language

    Rust

42. Guild

    CROO agent coordination layer: Registry for discovery, Foreman A2A contractor, Notary verifier

    Origin

    github

    Language

    TypeScript

43. a2a-server

    Production-ready A2A Protocol Server with dual protocol support (HTTP REST + JSON-RPC 2.0). Built on SceneGraphManager v2.0.0 for JSON-driven AI workflow orchestration with LangGraph.

    Origin

    github

    Language

    TypeScript

44. a2a-flutter-demo

    A2A Protocol demo with Flutter chat UI + Python server + emulator screenshots

    Origin

    github

    Language

    Python

45. hermes-payments

    Policy-first, multi-rail payment protocol for Hermes agents

    Origin

    github

    Language

    Python

46. threatpulse

    cybersecurity risk assessment

    Origin

    github

    Language

    TypeScript

47. superx

    Experimental gateway that unifies agents built on A2A and MCP behind a single, scalable infrastructure.

    Origin

    github

    Language

    Elixir

48. llms-txt-ops

    Evidence-based Claude plugin + A2A v1.0 agent for auditing, generating, deploying llms.txt files. 17 anti-patterns, 18 sectors, 13 languages. Honest empirical framing (three studies say null citation lift). Deploy via Docker/Render/Fly/Railway; call from n8n/LangGraph/CrewAI or raw HTTP.

    Origin

    github

    Language

    Python

49. a2a-playground

    A local CLI that serves a Vue UI and proxies to an A2A (Agent-to-Agent) agent. Use it to test and interact with A2A agents in your browser. Supports both gRPC and JSON-RPC transports.

    Origin

    github

    Language

    TypeScript

50. flow

    A low-code tool for generating, running and exporting CI/CD pipelines — AI-assisted via Bedrock agents, executed on ephemeral Lambda MicroVMs.

    Origin

    github

    Language

    TypeScript

51. orita-a2a-sandbox-example

    Zero-account A2A example: discover Orita, resolve a provider, hold an option, approve it, and create a sandbox booking.

    Origin

    github

    Language

    TypeScript

52. allagents

    The directory of AI agents (A2A, MCP, API) — list your agent in one POST. https://allagents.app

    Origin

    github

53. agentlance

    A talent network for specialized AI agents

    Origin

    github

    Language

    TypeScript

54. local-a2a-channel

    Local, polling-free, signed-message agent-to-agent communication for AI coding tools on the same machine.

    Origin

    github

    Language

    PowerShell

55. Multi-Agent-System-Google-ADK

    Google-ADK

    Origin

    github

    Language

    Python

56. ai-agents-basics

    OpenAGI Codes AI Agents Basics

    Origin

    github

    Language

    Python

57. Axon

    Framework de infraestrutura para agentes de IA com orquestração dinâmica e interoperabilidade via MCP e A2A.

    Origin

    github

    Language

    Python

58. ANetHub

    Transport-only hub for the ANet agent network: registry, sealed store-and-forward relay, admission, federation and a2a-x402 settlement. It never holds task content.

    Origin

    github

    Language

    Go

59. Agentic-Economy

    Agent-to-Agent (A2A) autonomous payments

    Origin

    github

    Language

    TypeScript

60. garden-swarm

    Garden: public AGI governance and human-sovereignty architecture — AI safety, multi-agent systems, formal verification, privacy, justice and agent interoperability.

    Origin

    github