How It Works ​

tl;dr ​

The internal /api/__api_party server route will proxy your API request.

Detailed Answer ​

The generated composables will initiate a POST request to the Nuxt server route /api/__api_party, which then initiates the actual request for a given route to your API and passes the response back to the client. This proxy behavior has the benefit of keeping your API credentials safe from the client and omitting CORS issues, since data is sent from server to server.

During server-side rendering, calls to the Nuxt server route will directly call the relevant function (emulating the request), saving an additional API call.