Add server page

docs/docs/docs/server.md

@@ -1,3 +1,20 @@
 ---
 title: API Server
 ---
+
+:::warning
+
+This page is under construction. 
+
+:::
+
+Jan ships with a built-in API server, that can be used as a drop-in replacement for OpenAI's API. 
+
+Jan runs on port `1337` by default, but this can be changed in Settings. 
+
+Check out the [API Reference](/api-reference) for more information on the API endpoints.
+
+```
+curl https://localhost:1337/v1/chat/completions
+
+```