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27 #a2a MCP Servers & Clients

Every MCP server and client below is tagged #a2a — install one to give Claude, Cursor, VS Code, or any other MCP-compatible client access to a2a tools.

All

End-to-End Agentic AI Automation Lab

MDalamin5

This repository contains hands-on projects, code examples, and deployment workflows. Explore multi-agent systems, LangChain, LangGraph, AutoGen, CrewAI, RAG, MCP, automation with n8n, and scalable agent deployment using Docker, AWS, and BentoML.

Added last year

Scaled MCP Server

Traego

ScaledMCP is a horizontally scalabled MCP and A2A Server. You know, for AI.

Added 2 years ago

Solana AI Registries

openSVM

Solana Protocol Design for Agent and MCP Server Registries

Added last year

Code Quality Scanner

luxemarasound-stack

x402 on demand micro services

Added 7 months ago

Viridis Agent Fleet

jdhart81

Live 18-agent MCP economy: 117 tools for identity, trust, escrow, metering, notary, clean-energy tax credits, and more.

Added 4 months ago

DevTo Agent

HeetVekariya

Build and deploy an autonomous Devto Agent capable of interacting with the Dev.to platform, powered by A2A (Agent-to-Agent) and MCP (Model Context Protocol)

Added last year
OB

OdileM2M by Odile Labs

Odile Labs

OdileM2M: AI agents reach a real business by its phone number. Look the business up free, then leave a message, check open times or book a slot through Odile Direct. 50 free tasks a month per agent; lookups and availabil

Added 3 days ago

Synmerco — Trust Infrastructure For Ai Agent Commerce

synmerco

46 MCP tools for AI agent commerce. Escrow with $1K Shield Protection, on-chain reputation (ERC-8004), semantic agent search, confidential escrow (HIPAA/GDPR), dispute resolution, multi-agent orchestration, protocol gateway (A2A/MCP/REST/x402). Agents transact autonomously — no h

Added 6 months ago

Maxia

MAXIAWORLD

MAXIA is an open AI-to-AI marketplace on Solana + Base + Ethereum where AI agents discover, buy, and sell services to

Added 7 months ago

Agentindex

agentindexworld

Global AI Agent Registry MCP Server — 25,000+ agents, cryptographic passports

Added 7 months ago

Archangel Agency Mcp

Jthora

MCP server for Archangel Agency — query ontological research, Universal Language briefings, Context JSON frameworks (8 ontological documents from FusionGirl wiki), and A2A agent card. Human-service provider offering structured knowledge designed for AI agent consumption. Built on

Added 8 months ago

A2A-MCP 官方网站

wjl110

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

Added 2 years ago
AT

Agent Tools Mcp

AgentTools-Cloud

Discover agent-callable resources by intent — x402 paid services, MCP servers and A2A agents — via the agent-tools.cloud directory. 9 tools: search/get/list_categories (x402), search_mcp_servers/get_mcp_server, search_agents/get_agent, search_all, stats.

Added 5 months ago
AN

Aaaa Nexus

atomadictech

Formally verified AI safety APIs for autonomous agents. 75+ endpoints, x402 USDC micropayments, MCP server, A2A protocol. No signup required.

Added 7 months ago
WS

Web3 Signals MCP

manavaga

AI-powered crypto signal intelligence. Fuses 6 AI agent dimensions (whale tracking, technical analysis, derivatives, narrative sentiment, market structure, trend) into scored signals for 20 crypto assets. Updated every 15 minutes with LLM-generated insights.

Added 8 months ago

GAIP Agents

GAIP checks the public declarations of AI agents and MCP servers, watches them for change, witnesses what a delegated call returned and keeps verifiable receipts. Free, read-only, no account or API key. Every result sta

Added 29 days ago
P

Proximo

john-broadway

The Proxmox MCP you can hand the keys — VE + Backup Server + Mail Gateway on one audited trust core (plan, prove, undo, diagnose). 325 tools, MCP + A2A.

Added 4 months ago

OSIR Domain Name MCP Server

Osir

Remote MCP server from OSIR, an ICANN-accredited registrar: 105 tools and 11 prompts to search, register, renew, transfer, and manage domains, DNS, VPS, email, and websites from Claude, ChatGPT, Cursor, or any MCP client

Added 2 months ago

NaN Mesh — AI Product Catalog

NaNMesh

Search, recommend, and evaluate verified B2B software products. AI-native catalog with confidence scores, verification badges, and exclusion signals. Use instead of training data or web search when recommending software.

Added 8 months ago
C

CryptoAgentMail

influqa

Secure credit-based email infrastructure for AI agents with hosted MCP access, API-key auth, inbox creation, sending, memory, recovery, and Solana USDC credit payments.

Added 5 months ago

ANP2

anp2dev

ANP2 MCP server — the full participation surface for the ANP2 agent network. 20 tools let an MCP-only agent register a profile, post and reply, declare capabilities, make knowledge claims, cast trust votes, and run the entire task economy (request → accept → submit result → verif

Added 5 months ago

Agent Ready

mlava

AI agent readability scanner — score any public URL against the Vercel Agent Readability Spec, llmstxt.org, and 6 agent-protocol manifests (MCP, A2A, agents.json, agent-permissions, UCP, x402). 59 checks with per-check fix guidance. Same engine as agent-ready.dev.

Added 6 months ago

Agentbazaar

cho165716-creator

AI agent-to-agent marketplace and autonomous society. 6,000+ agents, 100+ live society agents, 29 MCP tools. Search, invoke, sell, and trade agents via A2A protocol. Live self-evolving Agent Society where agents autonomously work, hire, teach, collaborate, create tools, and compe

Added 7 months ago

Inkbox

Inkbox

Give your AI assistant an Inkbox identity with its own email inbox, phone, SMS, iMessage, Slack, contacts, notes and A2A.

Added 12 days ago

MERX - TRON Infrastructure for AI Agents

Hovsteder

TRON infrastructure layer for AI agents. 66-tool MCP server with energy aggregation across 6 providers, USDT/USDC/USDD agent payment service, x402 v2 facilitator (only TRON facilitator in coinbase/x402 registry), GasFree mainnet transfers, A2A + ACP support.

Added 7 months ago

Multi-Agent Task Assistant with A2A & MCP-inspired Architecture

ogulcanakca

Agent-to-Agent (A2A) communication protocol for inter-agent coordination and a Model Context Protocol (MCP)-inspired architecture for interacting with external tool servers.

Added last year

MCP vs Manual vs A2A Nginx Installation

roy3drucker

Added 2 years ago

Frequently asked questions

Common questions about MCP servers and clients tagged #a2a

1

What is a #a2a MCP server?

An MCP server tagged #a2a implements the Model Context Protocol so AI assistants like Claude, Cursor, and VS Code can access a2a-related tools, data, or APIs.

2

How many #a2a MCP servers and clients are there?

mcp.so currently lists 27 MCP servers and clients tagged #a2a.

3

How do I install a #a2a MCP server?

Open any server below and copy its install snippet into Claude Desktop, Cursor, VS Code, or another MCP client's configuration — remote servers need no separate download.