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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Official

Microsoft's utility and MCP server that turn PDF, Word, Excel, PowerPoint, HTML and other files into Markdown for models

Medium risk187.6KRepository stars

Reference MCP servers

Model Context Protocol servers

Official

Official reference MCP servers: Filesystem, Fetch, Git, Memory, Sequential Thinking, Time and Everything

Medium risk90.7KRepository stars

An MCP server built into the Netdata agent: metrics, logs, alerts and live process, service and container data for an AI assistant

Medium risk80.7KRepository stars
Official

Local context compression for agents: tool outputs, logs, files and RAG chunks shrink before reaching the LLM. Proxy, CLI, library and MCP

High risk74.1KRepository stars
Official

Up-to-date, version-specific library docs and code examples in your agent's context, via MCP or a CLI plus skill

Medium risk62.5KRepository stars
Official

Local memory for agents: stores conversations and project files verbatim and retrieves them with semantic search over MCP

Medium risk59.3KRepository stars
Official

The Chrome DevTools team's official MCP server: the agent drives a live Chrome, reads network and console, and records performance traces

Medium risk52.7KRepository stars

Indexes a codebase into a knowledge graph and gives the agent call chains, change blast radius and code search over MCP

Medium risk47.6KRepository stars
Official

A self-hosted knowledge base with block-level references and a built-in MCP server for connecting AI agents to your notes

Medium risk46.5KRepository stars
Official

A long-term memory system for AI agents: the agent stores experience and facts, then retrieves them through a built-in MCP server

High risk41KRepository stars

Microsoft's official MCP server for driving a browser with Playwright through the accessibility tree, no screenshots needed

Medium risk37.7KRepository stars
Official

An MCP server and web tool for improving prompts: three tools for optimizing system and user prompts with iterative refinement

Medium risk36KRepository stars

GitHub's official MCP server: code, issues, pull requests, Actions and security alerts straight from the agent

High risk33.3KRepository stars

An MCP server that gives agents IDE powers: symbol and reference lookup, symbol-level edits and renames via LSP or JetBrains

High risk29.9KRepository stars

Blender MCP

MCP for Blender

An MCP server and Blender addon: the agent creates and edits objects, materials and scenes, pulls assets and runs Python in Blender

High risk29.6KRepository stars

A task manager for AI-driven development: breaks a PRD into dependent tasks and guides the agent through them via MCP or CLI

Medium risk28.1KRepository stars

An MCP server with n8n node and template knowledge: the agent picks nodes, validates configs and, with API access, creates workflows in your n8n

High risk23KRepository stars
Official

Google's open-source MCP server for databases: ready tools for Postgres, MySQL, BigQuery, Spanner and more, plus custom tools in tools.yaml

High risk16.5KRepository stars

An MCP server that gives the agent simplified Figma layout data from a link so it can build the screen more accurately than from a screenshot

Medium risk15.9KRepository stars

An MCP server that lets an agent work on your computer: terminal and long-running processes, file search and edits, Excel, PDF and DOCX

High risk9.8KRepository stars
Official

AWS's official MCP server suite: docs, IaC, containers, serverless, databases, cost and monitoring

High risk9.7KRepository stars
Official

Official Apify MCP server: the agent runs ready-made Apify Store scrapers for social media, maps, search and shops

Medium risk9KRepository stars
Official

Official Firecrawl MCP server: web search, page scraping to Markdown, site crawling and in-page actions

Medium risk7.5KRepository stars
Official

An MCP server and CLI from Sentry for building, running and testing Xcode iOS and macOS projects from an AI agent

Medium risk6.4KRepository 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.