Your lab — …

Every app on this VM has its own web address. Open as many as you need — they run side by side, each in its own tab. Always use https://.

New here, or following a tutorial? The full Decoded Labs guide explains how these URLs work and how to make any app run behind the proxy.

Named shortcuts

Use these so you don't have to remember port numbers:

AddressPortTypical use

Any other port

For an app on a port not listed above, use <port>-lab….labs.decoded.com. For example, an app on port 9000:

Running an app from a tutorial?

Tutorials assume your own laptop. Here your app must accept outside connections (start it on 0.0.0.0, not localhost), use a listed port, and open over https://. Pick what you're running and copy this prompt into Claude Code, Copilot, or Cursor — it sets that up for you:

 ·  More detail & per-framework recipes →

How the address is built

<name-or-port>-lab….labs.decoded.com