> ## Documentation Index
> Fetch the complete documentation index at: https://docs.xpertai.cn/llms.txt
> Use this file to discover all available pages before exploring further.

# Environments

Environments define how CodeXpert runs your tasks. They determine repository access, setup steps, and runtime behavior.

## What an environment controls

* Repository connection and default branch
* Setup scripts and preinstalled packages
* Network access and runtime settings

## Repository context

Each environment links to a repository and branch. This provides:

* Repo identity for tasks
* A consistent base branch
* Reusable settings across tasks

## Setup and dependencies

Use setup scripts to install dependencies and configure tools. Keep scripts idempotent so repeated runs are safe.

## Operational tips

* Create one environment per repo for clarity.
* Keep setup scripts short and explicit.
* Update preinstalled packages when you change project tooling.