MCP servers for AI agents

An MCP server connects an agent to external data and tools over a single protocol: files, databases, APIs and services. This section lists servers with their transport, auth method and environment variables, an install command and an access level with its reasons.

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Found: 1567

OpenDia

opendia

Connects your browser to AI: 18 MCP tools, an extension for Chrome and Firefox and a tunnel mode for ChatGPT. An open alternative to Dia and Comet

Broad access1.9KRepository stars

iMCP

imcp

A macOS app that opens the calendar, contacts, reminders, messages and other Mac data to AI through MCP. Not affiliated with Apple

Broad access1.9KRepository stars

open-webSearch

open-websearch

Web search with no API keys: an MCP server, a CLI and a local daemon. It works by parsing search engine pages so it may break

Minimal access1.9KRepository stars

An MCP server for Slack: channel history, threads, DMs, search and unreads, with posting off by default

Broad access1.9KRepository stars

An MCP server for Brazil's open data: economy, laws, public procurement, courts, elections, environment and more

Extended access1.8KRepository stars

Docs MCP Server

Grounded Docs MCP Server

A local MCP server that indexes docs from websites, GitHub, npm, PyPI and files and gives the agent version-aware search

Extended access1.8KRepository stars
Official

A graph database with git-style branches: the server exposes it to agents over MCP at /mcp, and a skill teaches the agent schemas and queries

Broad access1.8KRepository stars

IWE keeps project memory in linked Markdown notes: a CLI, an editor server and the iwec MCP server let an agent read and edit them alongside you

Broad access1.8KRepository stars

An MCP server and CLI in Go: the agent keeps an index of code and database schema in the repository, versions it in Git and reads it whole before each task

Broad access1.8KRepository stars
Official

An MCP server for generating images and video from the agent: several models, a large prompt library and parallel tasks

Extended access1.8KRepository stars

A SQLite-based SQL engine with plugins for apps, databases and files: the anyquery mcp command exposes that data to Claude, Cursor and other MCP clients

Broad access1.8KRepository stars
Official

MCP server for the ERD Editor: an agent adds tables, relations and indexes and the edits show up live on the canvas in VS Code, Obsidian and JetBrains

Extended access1.7KRepository stars

An MCP server that gives the agent vulnerability triage: NVD data, EPSS, the CISA KEV catalog, MITRE ATT&CK mapping and one-call CVE risk scoring

Extended access1.7KRepository stars

A local MCP server for safe read, search and edit of notes in an Obsidian vault, restricted to the vault root

Extended access1.7KRepository stars

A Swift MCP server for macOS: an agent sees any app through the accessibility tree, clicks and types, and saves repeatable workflows as JSON recipes

Broad access1.7KRepository stars

MCP Server for WinDbg

MCP Server for WinDbg Crash Analysis

An MCP server that hands the agent the Windows debuggers: crash dump analysis, remote and kernel debugging in natural language

Extended access1.6KRepository stars

An MCP server for n8n: the agent manages workflows and their executions through the n8n API in natural language, creating, updating, activating and running them

Broad access1.6KRepository stars
Official

A remote MCP server and Chrome extension: the agent reads data behind your logins and operates the sites you already use

Broad access1.6KRepository stars

A bridge from an LSP language server to the agent: definitions, references, diagnostics, hover and symbol rename

Extended access1.6KRepository stars

data.gouv.fr MCP

data.gouv.fr MCP Server

Official

Official MCP server for France's open data portal: search, explore and query datasets straight from a chat with the agent

Extended access1.6KRepository stars
Official

Official MiniMax MCP server: text to speech, voice cloning and design, image and video generation

Extended access1.6KRepository stars

Frequently asked questions

What is an MCP server?

An MCP server connects an agent to external data and tools over a single protocol: files, databases, APIs and services. The agent calls its tools while it works.

How do I connect an MCP server to an agent?

The entry lists how to run it (npx, uvx, docker or a remote URL) and the environment variables. A config snippet goes into the agent settings.

Do I need a key or a paid account?

It depends on the server. Each entry states the auth method and requirements, including paid accounts, in the limitations block.