MCP servers

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 honest read on the risks.

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Found: 883

Official

An MCP server and skill for a set of thousands of brand SVG icons: the agent searches and inserts icons with no key

Low risk2.8KRepository stars

An MCP server that indexes code with tree-sitter and returns individual functions and classes to the agent instead of whole files

Medium risk2.7KRepository stars

An MCP server for searching and downloading academic papers from arXiv, PubMed, bioRxiv, Semantic Scholar and other open sources

Medium risk2.7KRepository stars

A self-hosted gateway that merges several MCP servers into one endpoint with auth and tool selection

High risk2.7KRepository stars
Official

An MCP server for the Godot engine: connects Claude Code, Claude Desktop and Codex to a live editor to build scenes, scripts and materials

Medium risk2.7KRepository stars
Official

Cross-device clipboard sync with a built-in MCP server: the agent reads your copy history, and data never leaves for the cloud

Medium risk2.6KRepository stars

An MCP server to drive FreeCAD from Claude Desktop and other clients: create and edit models, run scripts and FEM analysis

High risk2.5KRepository stars

An MCP server for PCB design in KiCAD: the agent places components, routes connections, runs DRC and prepares manufacturing files

Medium risk2.5KRepository stars

Excalidraw MCP Server

Excalidraw MCP Server, CLI & Agent Skill

A live Excalidraw canvas for the agent: creates, edits and exports diagrams over MCP or CLI, sees its own work via screenshots and saves .excalidraw files into

Medium risk2.5KRepository stars

Open Computer Use

open-computer-use

An open MCP server for desktop control: the agent reads app state and clicks, types and scrolls on macOS, Linux and Windows

High risk2.3KRepository stars

An MCP server for the iOS Simulator: taps, swipes, text input, accessibility tree, screenshots, video and app control

Medium risk2.2KRepository stars

An MCP server that turns a request into a step plan with dependencies and keeps context across agent sessions

Medium risk2.1KRepository stars

A native MCP plugin for the x64dbg debugger: the agent drives debugging over HTTP, sets breakpoints, steps through code, reads and patches memory

High risk2.1KRepository stars

MCP server that gives an agent access to MySQL: schema inspection and queries, read-only by default, writes behind flags

Medium risk2.1KRepository stars

An MCP server that lets an agent control the Unreal Engine editor in words: actors, blueprints, node graphs, camera

Medium risk2.1KRepository stars

A malware analysis tool with an MCP server: the agent calls file, document and archive analysis, indicator extraction and signature checks

Medium risk2.1KRepository stars

An MCP server that turns a large codebase into a semantic feature graph for precise navigation and meaning-based search

Medium risk2KRepository stars

Self-hosted long-term memory for agents: semantic search, a knowledge graph and autonomous consolidation over MCP and a REST API

Medium risk2KRepository stars

MCP server that connects an AI agent to the Unity Editor: scene, objects, packages and project resources

High risk1.9KRepository stars

A code-intelligence engine for agents: builds a project graph and serves symbol lookup, call chains and blast radius, saving context

Medium risk1.8KRepository 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

Medium risk1.8KRepository stars

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

Medium risk1.7KRepository 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

High risk1.6KRepository stars

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

Medium risk1.6KRepository 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.