# MCP Reference Servers — Official Collection

> Official MCP reference server implementations by Anthropic: filesystem, git, memory, fetch, sequential thinking, and more. The starting point for MCP development.

## Install

Merge the JSON below into your `.mcp.json`:

## Quick Use

Install any reference server via npm/npx. Example for the filesystem server:

```json
{
  "mcpServers": {
    "filesystem": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-filesystem", "/path/to/allowed/dir"]
    }
  }
}
```

Browse all servers at the [MCP Registry](https://registry.modelcontextprotocol.io/).

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## Intro

The official collection of MCP (Model Context Protocol) reference server implementations, maintained by Anthropic's MCP steering group. These are the canonical examples for building MCP servers — each demonstrates specific protocol features with production-quality code. 82,000+ GitHub stars. SDKs available for 10 languages.

**Works with**: Claude Code, GitHub Copilot, Gemini CLI
---

## Active Reference Servers

| Server | Description | Install |
|--------|-------------|---------|
| **Everything** | Comprehensive test server with prompts, resources, and tools | `@modelcontextprotocol/server-everything` |
| **Fetch** | Web content retrieval optimized for LLM consumption | `@modelcontextprotocol/server-fetch` |
| **Filesystem** | Secure file operations with configurable access controls | `@modelcontextprotocol/server-filesystem` |
| **Git** | Repository reading, searching, and manipulation | `@modelcontextprotocol/server-git` |
| **Memory** | Knowledge graph-based persistent memory system | `@modelcontextprotocol/server-memory` |
| **Sequential Thinking** | Dynamic problem-solving through thought sequences | `@modelcontextprotocol/server-sequential-thinking` |
| **Time** | Time and timezone conversion | `@modelcontextprotocol/server-time` |

## Official SDKs

Build your own MCP servers in any of these languages:
- **TypeScript** / **Python** / **Rust** / **Go** / **Java** / **Kotlin** / **C#** / **Ruby** / **Swift** / **PHP**

## Configuration Examples

### Filesystem server (read/write access)
```json
{
  "mcpServers": {
    "filesystem": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-filesystem", "/Users/me/projects"]
    }
  }
}
```

### Git server
```json
{
  "mcpServers": {
    "git": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-git"]
    }
  }
}
```

### Memory server (persistent knowledge graph)
```json
{
  "mcpServers": {
    "memory": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-memory"]
    }
  }
}
```

## Archived Servers (moved to separate repo)

Previously included: AWS KB Retrieval, Brave Search, GitHub, GitLab, Google Drive, Google Maps, PostgreSQL, Puppeteer, Redis, Sentry, Slack, SQLite. These are now in [servers-archived](https://github.com/modelcontextprotocol/servers-archived).

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### FAQ

**Q: What is MCP Reference Servers?**
A: Official MCP reference server implementations by Anthropic: filesystem, git, memory, fetch, sequential thinking, and more. The starting point for MCP development.

**Q: How do I install MCP Reference Servers?**
A: Check the Quick Use section above for step-by-step installation instructions. Most assets can be set up in under 2 minutes.

## Source & Thanks

> Created by [modelcontextprotocol](https://github.com/modelcontextprotocol) (Anthropic). Licensed under Mixed (per server).
> [servers](https://github.com/modelcontextprotocol/servers) — ⭐ 82,300+

The canonical starting point for MCP server development, maintained by Anthropic's MCP team.

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Source: https://tokrepo.com/en/workflows/8a28360d-6eef-449d-9857-d8b388a05f34
Author: MCP Hub