Shelley is a coding agent. It is web-based, works on mobile, and, when you
start an `exe.dev` VM with the default `exeuntu` image, it is running on port
9999, and you can access it securely at `https://vmname.shelley.exe.xyz/`.

You can ask Shelley to install software (e.g., run a Marimo notebook on port
8000), build a web site, browse the web, and anything in between. That said,
you don't have to use Shelley if you don't want to. Other coding agents run
just fine on `exe.dev` VMs and some are pre-installed on our default image.
If you want, disable it with `sudo systemctl disable --now shelley.service`.

By default, Shelley uses the [LLM Gateway](/docs/shelley/llm-gateway) so you
don't need to configure any API keys. You can "bring your own key" to Shelley,
and use it with your favorite provider.

Shelley is so named because the main tool it uses is the shell, and I like
putting "-ey" at the end of words. It is also named after Percy Bysshe Shelley,
with an appropriately ironic nod at
"[Ozymandias](https://www.poetryfoundation.org/poems/46565/ozymandias)."
Shelley is a computer program, and, it's an it.