> ## Documentation Index
> Fetch the complete documentation index at: https://craftspace.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.
# Gus
> The assistant that reads your context and then goes and does something with it.
Gus answers from your pages, your decisions and your connected tools. Not from a general model's guess at
how your company works.
## Where it runs
The web app, Slack, Discord and Telegram. A direct message runs as **you**, with your permissions. A
channel runs as **its own identity**, with an explicit list of page subtrees it can see, so a support
channel does not quietly read the whole brain.
## What it needs
Two things, both in [server settings](/self-hosting/server-settings):
* An **OpenRouter key**. One key that every team on the install runs on.
* A **Vercel Sandbox**. Gus runs a coding harness in a sandbox, which is where it reads repositories, runs
tools and produces work. There is no in-process fallback.
## A turn
A turn survives the process that started it, so a long job is not lost to a deploy or a restart. What you
see while it runs is its **plan**, not its current tool call, because a list of tool names is not progress.
Gus is a doer rather than a reader. When it finishes a piece of work it captures one durable learning back
into the brain, which is what stops a wiki from decaying into whatever somebody wrote in month one.
## Errands
When Gus needs a human, it opens an **errand**: one ask, one person, with a deadline. Not a silent block.
It tags the person in the thread rather than sending a DM, and one errand is out per person at a time.
Every errand ends. The deadline is the only dial.