# Model Context Protocol Reference Servers MCP server

> Provides reference implementations of MCP servers to demonstrate how LLMs can access tools, data sources, and filesystems securely.

- Repository: https://github.com/modelcontextprotocol/servers
- Page: https://hostedmcp.org/servers/modelcontextprotocol/servers
- Transport: stdio
- Stars: 91976

## Install

### Claude Code

```sh
claude mcp add servers -- npx -y @eternis.ai/perplexity-ask
```

### Cursor (`~/.cursor/mcp.json`)

```json
{
  "mcpServers": {
    "servers": {
      "command": "npx",
      "args": [
        "-y",
        "@eternis.ai/perplexity-ask"
      ]
    }
  }
}
```

### VS Code (`.vscode/mcp.json`)

```json
{
  "servers": {
    "servers": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@eternis.ai/perplexity-ask"
      ]
    }
  }
}
```

### Claude Desktop (`claude_desktop_config.json`)

```json
{
  "mcpServers": {
    "servers": {
      "command": "npx",
      "args": [
        "-y",
        "@eternis.ai/perplexity-ask"
      ]
    }
  }
}
```

### Codex (`~/.codex/config.toml`)

```toml
[mcp_servers.servers]
command = "npx"
args = ["-y", "@eternis.ai/perplexity-ask"]
```

### Gemini CLI (`~/.gemini/settings.json`)

```json
{
  "mcpServers": {
    "servers": {
      "command": "npx",
      "args": [
        "-y",
        "@eternis.ai/perplexity-ask"
      ]
    }
  }
}
```

## FAQ

### Are these servers production-ready?

No, they are intended as educational reference implementations to demonstrate MCP features and SDK usage.

### How can I run the TypeScript-based servers?

You can start TypeScript-based servers using the npx command.