MCP

Model Context Protocol

Anthropic

Standardizes how AI connects to external tools and data sources. Like an "AI's USB-C port" — one protocol to access databases, APIs, file systems, and more.

Agent ↔ Tool / Data
ToolIntegrationContext

A2A

Agent-to-Agent Protocol

Google

Enables interoperability between AI agents across vendors and frameworks. Agents discover, delegate, and collaborate — a "diplomatic protocol" for AI.

Agent ↔ Agent
InteroperabilityCollaboration

MCP connects agents with tools. A2A connects agents with agents.

Start here

Top Picks

High-signal entries to start exploring the A2A and MCP ecosystem.

TinyFish logo

TinyFish

MCP Servers

TinyFish is a web infrastructure platform for AI agents that combines live web search, browser-rendered content extraction, goal-based web automation, and managed cloud browser sessions. Developers can access the platform through APIs, SDKs, a CLI, and integrations with agent frameworks and AI coding tools.

web agentweb automationbrowser automation
TinyFish logo

TinyFish

MCP Servers

TinyFish exposes web automation, web search, content extraction, and remote browser-session tools to MCP-compatible AI assistants. The hosted MCP server uses OAuth 2.1, while an optional local @tiny-fish/mcp proxy supports API-key authentication for local-only, CI, and headless setups.

MCPweb automationbrowser automation
openaiDeveloperDocs logo

openaiDeveloperDocs

MCP Servers

OpenAI Developer Docs MCP is an OpenAI-hosted, read-only server that lets MCP clients search and fetch documentation from developers.openai.com, platform.openai.com, and learn.chatgpt.com. It uses a public streamable HTTP endpoint and does not call the OpenAI API on the user's behalf.

MCPOpenAIdeveloper documentation
Clawk logo

Clawk

MCP Servers

Clawk is an API-first, Twitter/X-style social network where AI agents can publish 400-character posts, reply, follow, like, quote, and reclawk. It provides a hosted REST API and Agent Skill guide rather than a documented MCP server.

AI agentssocial networkREST API
Windsurf Mcp logo

Windsurf Mcp

MCP Servers

Windsurf MCP refers to the MCP client support in Cascade, now documented under Devin Desktop after Windsurf was renamed. It lets the editor connect to external MCP servers through the built-in marketplace, deeplinks, or mcp_config.json.

MCPWindsurfDevin Desktop
Cursor MCP logo

Cursor MCP

MCP Servers

Cursor MCP is Cursor's Model Context Protocol client support for connecting the Cursor editor and Cursor CLI agent to external MCP servers. Official docs cover stdio, SSE, Streamable HTTP, mcp.json configuration, OAuth, Marketplace plugins, and CLI management commands.

MCPCursorAI IDE

New arrivals

Latest Entries

Recently added resources for people who want to track what is new.

TinyFish logo

TinyFish

MCP Servers

TinyFish is a web infrastructure platform for AI agents that combines live web search, browser-rendered content extraction, goal-based web automation, and managed cloud browser sessions. Developers can access the platform through APIs, SDKs, a CLI, and integrations with agent frameworks and AI coding tools.

web agentweb automationbrowser automation
TinyFish logo

TinyFish

MCP Servers

TinyFish exposes web automation, web search, content extraction, and remote browser-session tools to MCP-compatible AI assistants. The hosted MCP server uses OAuth 2.1, while an optional local @tiny-fish/mcp proxy supports API-key authentication for local-only, CI, and headless setups.

MCPweb automationbrowser automation
openaiDeveloperDocs logo

openaiDeveloperDocs

MCP Servers

OpenAI Developer Docs MCP is an OpenAI-hosted, read-only server that lets MCP clients search and fetch documentation from developers.openai.com, platform.openai.com, and learn.chatgpt.com. It uses a public streamable HTTP endpoint and does not call the OpenAI API on the user's behalf.

MCPOpenAIdeveloper documentation
Clawk logo

Clawk

MCP Servers

Clawk is an API-first, Twitter/X-style social network where AI agents can publish 400-character posts, reply, follow, like, quote, and reclawk. It provides a hosted REST API and Agent Skill guide rather than a documented MCP server.

AI agentssocial networkREST API
FetchSandbox logo

FetchSandbox

MCP Servers

FetchSandbox is a stdio MCP server and hosted API-sandbox service that lets AI coding agents import OpenAPI 3.x specifications, discover runnable workflows, and execute stateful integration tests without using production API credentials. It is designed for validating request flows, lifecycle state, webhooks, retries, and shareable run traces from MCP-compatible development tools.

MCPOpenAPIAPI testing
DataForSEO MCP Server logo

DataForSEO MCP Server

MCP Servers

DataForSEO MCP Server is the official Model Context Protocol server for connecting AI clients to DataForSEO SEO, SERP, keyword, backlink, on-page, business, domain, content, merchant, and AI optimization data. It can be used as a hosted Streamable HTTP endpoint, a local npx package, a Docker container, or a source-built TypeScript server.

MCPDataForSEOSEO

Curated

Featured

Highlighted projects from the community.

TinyFish logo

TinyFish

MCP Servers

TinyFish is a web infrastructure platform for AI agents that combines live web search, browser-rendered content extraction, goal-based web automation, and managed cloud browser sessions. Developers can access the platform through APIs, SDKs, a CLI, and integrations with agent frameworks and AI coding tools.

web agentweb automationbrowser automation
TinyFish logo

TinyFish

MCP Servers

TinyFish exposes web automation, web search, content extraction, and remote browser-session tools to MCP-compatible AI assistants. The hosted MCP server uses OAuth 2.1, while an optional local @tiny-fish/mcp proxy supports API-key authentication for local-only, CI, and headless setups.

MCPweb automationbrowser automation

Apps

MCP Clients

Desktop, web, and developer clients for using protocol-powered tools.

Gemini CLI MCP logo

Gemini CLI MCP

Clients & Apps

Gemini CLI is an open-source terminal AI agent with MCP client support. It connects to configured MCP servers over stdio, SSE, or Streamable HTTP to extend Gemini with external tools, resources, and prompts.

Gemini CLIGoogleMCP Client
ChatGPT Apps SDK logo

ChatGPT Apps SDK

Clients & Apps

The official OpenAI framework for building interactive apps that run inside ChatGPT. Built on the Model Context Protocol (MCP), it lets developers expose tools, structured data, and rich UI components directly within ChatGPT conversations.

openaichatgptapps-sdk
Claude Code logo

Claude Code

Clients & Apps

Claude Code is Anthropic’s official agentic coding assistant. It works across terminal CLI, IDEs, desktop app, and browser to read codebases, edit files, run commands, manage Git workflows, and connect to external tools via MCP.

claudeanthropicclaude-code
Claude Desktop logo

Claude Desktop

Clients & Apps

Claude Desktop is Anthropic’s official native desktop app for macOS and Windows, delivering full Claude AI with Chat, Cowork agentic tasks, Code capabilities, desktop extensions for local MCP servers, and connectors for external tools.

claudeanthropicdesktop-app

Ecosystem Directory

Browse through curated categories of A2A and MCP ecosystem resources.

MCP Servers

MCP-compatible servers providing tools, data, and API integrations for AI models.

TinyFish logo

TinyFish

MCP Servers

TinyFish is a web infrastructure platform for AI agents that combines live web search, browser-rendered content extraction, goal-based web automation, and managed cloud browser sessions. Developers can access the platform through APIs, SDKs, a CLI, and integrations with agent frameworks and AI coding tools.

web agentweb automationbrowser automation
TinyFish logo

TinyFish

MCP Servers

TinyFish exposes web automation, web search, content extraction, and remote browser-session tools to MCP-compatible AI assistants. The hosted MCP server uses OAuth 2.1, while an optional local @tiny-fish/mcp proxy supports API-key authentication for local-only, CI, and headless setups.

MCPweb automationbrowser automation
openaiDeveloperDocs logo

openaiDeveloperDocs

MCP Servers

OpenAI Developer Docs MCP is an OpenAI-hosted, read-only server that lets MCP clients search and fetch documentation from developers.openai.com, platform.openai.com, and learn.chatgpt.com. It uses a public streamable HTTP endpoint and does not call the OpenAI API on the user's behalf.

MCPOpenAIdeveloper documentation
Clawk logo

Clawk

MCP Servers

Clawk is an API-first, Twitter/X-style social network where AI agents can publish 400-character posts, reply, follow, like, quote, and reclawk. It provides a hosted REST API and Agent Skill guide rather than a documented MCP server.

AI agentssocial networkREST API
FetchSandbox logo

FetchSandbox

MCP Servers

FetchSandbox is a stdio MCP server and hosted API-sandbox service that lets AI coding agents import OpenAPI 3.x specifications, discover runnable workflows, and execute stateful integration tests without using production API credentials. It is designed for validating request flows, lifecycle state, webhooks, retries, and shareable run traces from MCP-compatible development tools.

MCPOpenAPIAPI testing
DataForSEO MCP Server logo

DataForSEO MCP Server

MCP Servers

DataForSEO MCP Server is the official Model Context Protocol server for connecting AI clients to DataForSEO SEO, SERP, keyword, backlink, on-page, business, domain, content, merchant, and AI optimization data. It can be used as a hosted Streamable HTTP endpoint, a local npx package, a Docker container, or a source-built TypeScript server.

MCPDataForSEOSEO

A2A Agents

Agents using the A2A protocol for cross-vendor collaboration and task delegation.

OpenClaw A2A Gateway

A2A Agents

A production-ready plugin for OpenClaw that implements the A2A (Agent-to-Agent) v0.3.0 protocol, enabling bidirectional communication, task delegation, and automatic peer discovery between OpenClaw agents and other A2A-compatible agents across different servers.

a2aa2a-agentopenclaw

AI Agents

Autonomous AI agents for coding, browsing, research, and workflow automation.

Claude Agent via Zed External Agents logo

Claude Agent via Zed External Agents

AI Agents

Claude Agent via Zed External Agents lets developers run Claude as an ACP-integrated coding agent inside Zed’s Agent Panel or Threads Sidebar. Zed hosts the thread UI, while Claude Agent owns its own runtime, authentication, billing, model behavior, tools, and native configuration.

claudeclaude-codezed
Workspace Agents logo

Workspace Agents

AI Agents

Codex-powered shared AI agents in ChatGPT for teams. Automate complex, long-running workflows across tools like Slack, Google Drive, and CRM—running in the cloud with enterprise controls.

ai-agentchatgptopenai
Hermes Agent logo

Hermes Agent

AI Agents

Hermes Agent is an open-source, self-improving autonomous AI agent by Nous Research that learns from experience, builds reusable skills, maintains persistent cross-session memory, and evolves to become more capable over time.

ai-agentautonomous-agentself-improving
Open SWE logo

Open SWE

AI Agents

Open SWE is an open-source asynchronous coding agent built by LangChain. It autonomously handles GitHub issues by researching codebases, planning tasks, writing and testing code, self-reviewing, and opening pull requests — acting like a full-time software engineer on your team.

ai-agentcoding-agentsoftware-engineering
autoresearch logo

autoresearch

AI Agents

Andrej Karpathy's open-source AI agent that autonomously runs LLM training experiments overnight on a single GPU, editing code, evaluating improvements, and iterating while you sleep.

ai-agentllmmachine-learning
OpenClaw Chrome MCP logo

OpenClaw Chrome MCP

AI Agents

OpenClaw's powerful Chrome DevTools MCP integration. Attach your local AI agent to your real signed-in Chrome browser (with cookies, tabs, and logins intact) for full web control — click, type, read pages, take snapshots, and automate any task directly in your live browser.

openclawchrome-mcpbrowser-automation

Frameworks & SDKs

SDKs, libraries, and frameworks for building agents and protocol integrations.

Cloudflare Workers MCP logo

Cloudflare Workers MCP

Frameworks & SDKs

Build and deploy custom remote MCP servers on Cloudflare Workers to expose tools, APIs, and Cloudflare services to AI agents like Claude and Cursor via standardized protocol.

cloudflareworkersmcp
C# MCP SDK logo

C# MCP SDK

Frameworks & SDKs

The official C# SDK for the Model Context Protocol (MCP), maintained in collaboration with Microsoft. It enables .NET developers to easily build MCP servers and clients, exposing tools, resources, and prompts to AI agents like Claude, Cursor, and Gemini.

mcpcsharpdotnet
OpenViking logo

OpenViking

Frameworks & SDKs

OpenViking is an open-source context database for AI agents that organizes memory, resources, and skills using a filesystem paradigm (viking:// URIs), enabling hierarchical context delivery, layered loading, and self-evolving agents.

ai-agentcontext-managementmemory-database
Hindsight logo

Hindsight

Frameworks & SDKs

Hindsight is an open-source agent memory system that enables AI agents to truly learn over time by retaining facts, recalling with hybrid strategies, and reflecting to form mental models.

ai-agent-memoryagent-frameworklong-term-memory
Dynamic Worker Loader logo

Dynamic Worker Loader

Frameworks & SDKs

Cloudflare's Dynamic Worker Loader API enables Workers to spawn new, isolated Workers at runtime with arbitrary code, providing lightweight sandboxing ideal for executing AI-generated code securely and efficiently.

cloudflareworkersdynamic-workers
FastMCP logo

FastMCP

Frameworks & SDKs

The fast, Pythonic framework for building MCP (Model Context Protocol) servers and clients. Turn any Python function into production-ready LLM tools with zero boilerplate.

pythonmcpmodel-context-protocol

Tools & Extensions

Developer tools, extensions, and ecosystem utilities.

CamoFox Browser logo

CamoFox Browser

Tools & Extensions

CamoFox Browser is a headless anti-detection browser automation server powered by Camoufox (Firefox fork with C++-level fingerprint spoofing). It enables AI agents to reliably browse sites blocked by Cloudflare, Google, and other bot detection systems.

ai-agentheadless-browseranti-detection
mcporter logo

mcporter

Tools & Extensions

MCPorter is a TypeScript runtime, CLI, and code-generation toolkit for the Model Context Protocol (MCP). Discover, call, and turn any MCP server into a standalone CLI or typed API with zero-config discovery.

mcptypescriptcli
LobeHub logo

LobeHub

Tools & Extensions

LobeHub is a modern AI agent platform and marketplace for discovering, building, and collaborating with intelligent agent teammates. It features native Model Context Protocol (MCP) integration and the world's largest curated MCP Servers Marketplace with tens of thousands of ready-to-use integrations.

lobehubai-agentsmcp

Clients & Apps

Desktop, mobile, and web clients for interacting with AI agents.

Gemini CLI MCP logo

Gemini CLI MCP

Clients & Apps

Gemini CLI is an open-source terminal AI agent with MCP client support. It connects to configured MCP servers over stdio, SSE, or Streamable HTTP to extend Gemini with external tools, resources, and prompts.

Gemini CLIGoogleMCP Client
ChatGPT Apps SDK logo

ChatGPT Apps SDK

Clients & Apps

The official OpenAI framework for building interactive apps that run inside ChatGPT. Built on the Model Context Protocol (MCP), it lets developers expose tools, structured data, and rich UI components directly within ChatGPT conversations.

openaichatgptapps-sdk
Claude Code logo

Claude Code

Clients & Apps

Claude Code is Anthropic’s official agentic coding assistant. It works across terminal CLI, IDEs, desktop app, and browser to read codebases, edit files, run commands, manage Git workflows, and connect to external tools via MCP.

claudeanthropicclaude-code
Claude Desktop logo

Claude Desktop

Clients & Apps

Claude Desktop is Anthropic’s official native desktop app for macOS and Windows, delivering full Claude AI with Chat, Cowork agentic tasks, Code capabilities, desktop extensions for local MCP servers, and connectors for external tools.

claudeanthropicdesktop-app

FAQ

Common questions from builders exploring A2A and MCP.

What is MCP?

MCP is a protocol for connecting AI models and agents to tools, files, databases, APIs, and other context sources through a common interface.

What is A2A?

A2A focuses on agent-to-agent interoperability, helping agents discover capabilities, delegate work, and coordinate across vendors or frameworks.

How do I choose an MCP server?

Start with the workflow you need, then check official status, recent activity, client compatibility, security notes, and installation requirements.

Can I submit a project?

Yes. Submit servers, clients, agents, frameworks, guides, and ecosystem resources for review so they can be listed in the directory.