TypeScript

A2V: Next-Gen AI Value Compute Protocol.

Evo AI is an open-source platform for creating and managing AI agents, enabling integration with different AI models and services.

Official validation and debugging tools for A2A agents. Web-based UI for spec compliance checks, raw JSON-RPC message viewer, and agent card validation.

Lucid Agents Commerce SDK. Bootstrap AI agents in 60 seconds that can pay, sell, and participate in agentic commerce supply chains. Our protocol agnostic SDK provides CLI-generated templates and drop-in adapters for Hono, Express, Next.js, and TanStack, giving you instant access to crypto/fiat payment rails (AP2, A2A, x402, ERC8004).

Elkar - Task management for AI Agents, ready for Agent2Agent (A2A) protocol

🟪 Open source Agent Governance Platform that turns any LangGraph or ADK agent into a production-ready service. Supports: AG-UI, CopilotKit API, OpenTelemetry, MCP, memory, guardrails, SSO, RBAC.

Adds nodes to n8n for interacting with AI agents using Google's Agent2Agent (A2A) protocol. Send tasks, manage interactions, and process results from A2A-compatible agents within your workflows.

Ship Agent2Agent in one line of code.

Community A2A provider for the ai-sdk from vercel

Demos and starter code for building agentic finance apps with Crossmint

This is a library for implementing an Agent2Agent (A2A) server using Google Apps Script. This enables AI agent communication and secure service access for AI-powered workflows.

Secure Retrieval-Augmented Generation (RAG) with role-based access control using Mastra AI orchestration, with JWT Secure, also Deep Research built with Cedar & Next.js. Gemini, OpenAI, Openrouter, & Gemini CLI usable. Also exposes tools, agents as MCP Server Also A2A Agent Cards

Agent 2 Agent (A2A) Validation tool (a2v) alternative to CLI

PEAC Protocol: Portable Evidence for Agent Coordination

A example A2a Server with Human-In-The-Loop feature.

🚀 The Rosetta Stone for Agentic Payments - One vending machine, 5+ protocol implementations. Get from zero to working agentic payments in 5 minutes.

AgentX Javascript/Typescript SDK. Build multi-agent AI workforce.

🦪💰 Framework-agnostic A2A payment system with SHIB on Polygon. Works with LangChain, AWS Bedrock, OpenClaw, AutoGen. Trustless escrow, negotiation, reputation. 9,416x cheaper than traditional escrow.

The definitive CLI for validating A2A (Agent-to-Agent) protocol agent cards. Validates cryptographic trust, schema compliance, and live endpoint functionality.

Mastervolt Deep Research is a sophisticated multi-agent orchestration system built on VoltAgent that automates complex research workflows. It combines specialized AI agents, semantic memory, intelligent tooling, and custom web scraping to conduct comprehensive research, verify facts, analyze data, and generate publication-ready reports.

An example implementation of a financial AI Agent built with Agentforce and made accessible through the A2A protocol. The Heroku backend provides A2A protocol support, and the agent uses Heroku AppLink to perform API invocations.

The A2A AgentKit provides a collection of sample AI agents that implement the Agent-to-Agent (A2A) protocol. These agents showcase interoperable AI systems built with the A2A SDK, integrated with the Genkit framework and powered by Google Gemini AI models.

Production-ready AMQP adapter for A2A protocol enabling distributed task processing, event sourcing with LavinMQ streams, and horizontal worker scaling.

A production-oriented, TypeScript multi-agent AI platform built on Google Genkit. The system composes Genkit flows, reusable tools, and independent A2A agents to support complex tasks such as research orchestration, code generation, and content editing.

AWS-powered hotel booking multi-agent assistant built with Strands Agents, Amazon Bedrock AgentCore, A2A protocol, MCP, Bedrock Knowledge Base, serverless Lambda integrations, and AWS CDK. Provides natural-language hotel search, price discovery, booking, and policy advisory.

"Machines must run." — Open-source protocol & trust layer for AI agent commerce. Discovery, reputation, micropayments on Base L2.

An Open-Source, Decentralized Marketplace for AI Agents. Enables A2A Collaboration, Discovery, and Interoperability for Multi-Agent Systems (MAS) and LLM Agents

A new unified Google Apps Script now deploys both Model Context Protocol (MCP) and Agent2Agent (A2A) networks as a single server, streamlining AI model integration for Google Workspace users.

📝 Enhance your writing with Editorial AI, a focused assistant that analyzes tone and style to humanize AI-generated text for clearer, more engaging content.

Multi-agent research system in a node-based architecture represented in a cyclic graph, made with LangGraph, Gemini, FastAPI & React Vite.

A2A-MCP official website with modern UI and dark mode support

A TypeScript library for creating A2A (Agent-to-Agent) protocol servers with decorators — "NestJS for AI agents". Build AI agent APIs with zero runtime dependencies.

An agent playground (without authentication) in a single repo for fastest turn around cycles during experiments.

Where AI disagrees before users suffer

Open-source AI agent with MCP UI, app builder, A2A protocol, skills marketplace, and multi-provider chat. Built with Mastra. Alternative to OpenClaw.

🎨 Generate custom emojis from text or photos with Emojify, a fast and fun AI tool for unique icons and stickers in various art styles.

TypeScript/JavaScript SDK for the LNMP (LLM Native Minimal Protocol): parsing, encoding, routing, embeddings, spatial streaming, and WASM-powered utilities.

Snack Money API examples

SNAP - Signed Network Agent Protocol. Secure agent-to-agent (A2A) communication with cryptographic identity, built on Bitcoin Schnorr signatures and Nostr.

Official CapiscIO GitHub Action to validate A2A (Agent-to-Agent) Agent Cards. Features schema validation, cryptographic verification, and live endpoint testing with 3D quality scoring.

A smart movie chatbot built with the Agent-to-Agent (A2A) protocol and Google’s Genkit AI. It features real-time movie data, quote generation, and interactive chat via API and CLI. Ask ChatGPT

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.

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.

Discover, compare, and implement the best agent-to-agent protocols for your AI systems. Enable your AI agents to communicate effectively with our curated protocol directory.

APIPOOL — Intelligent API marketplace for AI agents. 4-pillar scoring: self-learning, predictive, anomaly detection, contextual understanding.

The open-source event bus for AI agents. Webhooks in. Agent actions out.

Agent-to-Agent (A2A) autonomous payments

Youth sports analytics platform with verified statistics and team-validated metrics. Built on Firebase + Vertex AI for ECNL, MLS Next, and 56 youth soccer leagues.

MCPA2Aserver is a Google Apps Script library designed to consolidate Generative AI protocols into a single server solution. It enables developers to easily build and deploy servers that support both the **Model Context Protocol (MCP)** and the **Agent-to-Agent (A2A)** protocol.

Universal messaging infrastructure for AI agents — federated messaging, on-chain identity & reputation, x402 micropayments, A2A Protocol, EIP-1193 wallet signing

A registry website for hosting the a2a agents that were built using the Inference Gateway ADK

Multi-agent fraud detection demo using Claude + Gemini over MCP and A2A protocols

🔐 Streamline A2A authentication with Traylinx Auth Client for Node.js; enjoy secure token management and seamless integration for enterprise-level security.

An Agent Development Kit (ADK) allowing for seamless creation of A2A-compatible agents written in TypeScript

💸 Simplify payments with x402, an open protocol for fast, fee-free digital dollar transactions. Experience seamless integration and instant settlements.

Non-custodial MCP server for trustless escrow on the XRP Ledger. Enables AI agents to create, manage, and settle escrows with crypto-conditions.