Connect Windsurf to IPMusk

Who this is for

Developers who use Windsurf and want Cascade to fetch proxy URLs and account details.

What you need

• An IPMusk account with a verified email address.
• An IPMusk API key. Create it in Settings → API keys (/app/settings/api-keys). For typical use tick read and connect. Add support only if the assistant should open tickets, and order only if it should create orders that end in a payment link.
• The key in an environment variable named IPMUSK_API_KEY, for example export IPMUSK_API_KEY="ipm_live_YOUR_KEY" in your shell profile. The examples below read it from there.
• On Windsurf Teams or Enterprise, an admin may need to allow remote MCP servers.

Set it up

In Cascade, click the MCPs icon, then Configure. This opens ~/.codeium/windsurf/mcp_config.json. Add the server.

• Windsurf uses serverUrl, not url, for remote servers.
• Save the file, then click Refresh in the MCPs panel.

{
  "mcpServers": {
    "ipmusk": {
      "serverUrl": "https://ipmusk.com/mcp",
      "headers": {
        "Authorization": "Bearer ${env:IPMUSK_API_KEY}"
      }
    }
  }
}

Check it works

Open the MCPs panel in Cascade. ipmusk should be listed with its tools.

Ask the assistant: Which IPMusk account am I connected as? It should call get_account and answer with your email address.

Try these prompts

• How much IPMusk residential traffic do I have left?
• Get a sticky US proxy URL for 10 minutes and use it in this script.
• List my IPMusk Static ISP proxies and when they expire.

If it fails

• 401 authentication_required: the key is missing, wrong, revoked or expired. Check that IPMUSK_API_KEY is set where the client starts. echo ${#IPMUSK_API_KEY} prints its length without showing the key.
• The server is greyed out: your team admin has not allowed remote MCP servers.
• 403 forbidden on one tool: the key lacks that tool's scope, or your email is not verified. Scopes cannot be added to a key, so create a new key with the scope and swap it in.
• 429 rate_limited: too many calls in one minute (read 60, connect 20, support 30, order 10). Wait a minute and try again.
• Nothing changed after editing: click Refresh, or restart Windsurf.

Remove access

• Revoke the key in Settings → API keys (/app/settings/api-keys). It stops working at once.
• Then delete the ipmusk entry from mcp_config.json and click Refresh.