Install @udondan/duolingo in Cline

What you need first

• Cline, installed.
• Node.js, which gives the npx command the server starts with.

Steps

1. In Cline, open the MCP Servers icon, then the Configure tab, and choose Configure MCP Servers. It opens cline_mcp_settings.json.
2. Add this block. If the file already has mcpServers, add only the entry inside it.

{
  "mcpServers": {
    "duolingo": {
      "command": "npx",
      "args": ["-y", "@udondan/duolingo"]
    }
  }
}

3. Save the file. Cline reloads it and lists the server under MCP Servers.

Check it worked

Ask Cline: List the tools of duolingo.

If it does not start

spawn npx ENOENT

Node.js is not on the PATH that Cline sees. Install it, or write the full path of npx in the config.

Nothing changes after a restart

The file is not valid JSON any more. Look for a missing comma where the block was added.