A2ABay

Official Python SDK for building A2A clients and servers with streaming, tasks, and agent cards.

Official JavaScript and TypeScript SDK for integrating A2A into web apps, servers, and toolchains.

Official Java SDK for JVM teams implementing typed A2A clients, agent cards, task handlers, and production services.

Official .NET SDK for C# teams exposing A2A endpoints, typed task flows, and agent cards from ASP.NET services.

Official Go SDK for lightweight, concurrent A2A services and infrastructure-facing agents.

Official inspection UI for validating agent cards, task runs, streaming events, and A2A protocol responses.

Open-source security scanner for auditing A2A endpoints, agent cards, and registry-facing trust surfaces.

Canonical documentation hub for the Agent2Agent protocol, guides, and implementation details.

Full protocol specification for builders who need exact request, response, and lifecycle semantics.

Official Google Cloud tutorial for developing an A2A-compatible agent.

IBM developer tutorial for building and deploying A2A agents for complex business workflows.

Official Microsoft Learn guide for adding an A2A endpoint to Foundry Agent services.

Short course on the A2A protocol built with Google Cloud and IBM Research.

Reference sample showing how A2A and MCP can complement each other in one Python codebase.

Low-level Python sample showing A2A plus MCP without leaning on a framework abstraction.

Python sample agent for GitHub-centric automation and repo tasks.

A2A Python sample for multi-step travel planning and itinerary assistance.

Python multi-agent sample for accommodation planning and cross-agent coordination.

Official LangGraph sample for currency conversion, multi-turn dialogue, and streaming updates.

Python sample demonstrating Semantic Kernel connected to the A2A protocol.

Official CrewAI sample that exposes prompt-to-image generation as an A2A workflow returning image artifacts.

Python sample showing a BeeAI-based chat workflow wrapped with A2A compatibility.

Python sample connecting Azure AI Foundry SDK workflows into the A2A protocol.

Google ADK sample agent for currency lookup and basic task execution over A2A.

Official Google ADK sample for expense reimbursement with multi-turn input collection and webforms.

TypeScript sample agent focused on code-related tasks and tool-driven execution.

TypeScript sample for an editorial content editing agent exposed over A2A.

TypeScript sample for a media and recommendation style agent built with A2A compatibility.

Java sample agent for content generation and editorial workflows.

Java sample agent for editing and refining content through A2A workflows.

Java sample combining weather data access, MCP tooling, and A2A-compatible orchestration.

Official .NET sample demo combining A2A with Semantic Kernel patterns.

Community bridge that lets MCP-compatible assistants talk to A2A agents through an MCP server.

Lightweight Python bridge for letting Claude Desktop or any MCP client call A2A agents.

Official compatibility kit for verifying cross-SDK A2A interoperability across transports and versions.

Official minimal Python A2A server that returns simple message events and exposes the smallest runnable agent surface.

Official Google codelab root agent that orchestrates burger and pizza sellers over A2A.

Burger ordering seller agent built with CrewAI and wired into an A2A food-ordering system.

LangGraph pizza seller sample that answers menu and ordering requests over A2A inside a shared concierge flow.

Official AG2 sample exposing a Python review agent over A2A with MCP-backed tool execution.

Open-source agent-to-agent task marketplace where agents register, post tasks, pick up work, and earn credits.

Hosted A2A crypto derivatives intelligence agent with x402 micropayments and a published agent card.

Open-source CLI coding agent with A2A and MCP support that works across many model providers.

A2A adapter runtime that exposes OpenCode through an inbound server surface and embedded outbound client.

A2A adapter service that exposes the local Codex runtime with sessions, streaming, and peer calls.

Self-hosted browser agent with built-in MCP and A2A support for natural-language web automation.

A2A network implementation for hosting, registering, discovering, and interacting with agents.

Community framework on top of Google ADK for building and coordinating A2A-oriented agents faster.

Open-source multi-agent framework with native A2A support and cross-framework interoperability.

Open-source TypeScript orchestration layer for routing, tracking, and coordinating agent tasks over A2A.

Open-source multi-agent platform with native A2A, MCP, WebSocket, gRPC, and HTTP support.

TypeScript A2A server and client SDK built for production endpoints, practical DX, and cleaner Node integration.

Community Go A2A library with middleware hooks, auth support, and broad protocol method coverage.

Rust A2A library for building typed clients and servers with streaming and multiple transport options.

Crate Rust MCP client/server en développement actif — building blocks agentiques ergonomiques, JSON-RPC via rpc-router, multi-AI via genai, A2A en roadmap.

979 ⭐ · Le framework Python A2A le plus complet — workflow engine, AI router, Agent Flow UI drag-and-drop, LangChain natif, MCP v2.0 avec providers GitHub, Browserbase et Filesystem, CLI complète.

Minimal Python A2A implementation covering client and server basics, task lifecycle, streaming, and push updates.

Framework full-stack A2A — backend Python + frontend Node.js inclus, coordination multi-agent avec host agent, outils MCP via JSON config, RAG et DeepSearch agents prêts à déployer.

Annotate any Spring Boot app with @EnableAgent and it becomes both an A2A agent and an MCP server, with no extra configuration.

Stack Java A2A complet — Spring Boot starters client/serveur séparés, BOM, Reactor SSE streaming, spec A2A 1.0 fidèle, Maven Central.

SDK .NET A2A modulaire — Core, Client, Server, HTTP + gRPC + JSON-RPC, Redis persistence, Quartz scheduling : assemblez seulement ce dont vous avez besoin.

Strongly typed Python A2A library with Pydantic v2, dataclasses, and robust serialization support.

Registre public global pour le protocole A2A — enregistrement en moins de 5 min, discovery machine-facing via POST /a2a/discover, routing sans URLs hardcodées.

Le plus grand répertoire live d'agents A2A — samples officiels Google, implémentations communautaires, guides multi-langages, browsable sans aucun setup.

Répertoire curé de serveurs A2A-compliant classifiés par catégorie métier, langage et scope — échantillons Google officiels, agents communautaires live, et frameworks.

The open infrastructure stack for agent discovery, identity, messaging, and observability across any vendor or framework.