# Copilot

The copilot is the chat dock on Home. `⌘\` on macOS, `Ctrl+\` on Linux, folds and unfolds it.

## Which engine answers

The copilot engine, in **Settings › Integration**, is **Auto**, **Claude Code**, **Codex** or **Sample**. Auto uses the tool it
finds. With no AI tool connected, the copilot plays a short scripted sample so you can see what it does; that sample is
not a real answer. To connect a tool, see [Claude Code & Codex](/docs/ai/claude-code-and-codex).

## What it can read

The copilot can read the project: Claude Code gets only its reading tools (Read, Grep, Glob). It cannot change the
project's files.

## What it can change in tratto

The copilot changes tratto itself through a small server the app runs on your machine only
(`http://127.0.0.1:47823/mcp` by default, guarded by a token in the configuration folder). Through it the copilot can:

- read and change the **style** (`style.json`) and the **settings**;
- list, create, change and delete **workspaces**, pin and open projects, switch modules, search in the IDE;
- create and open **Home pages**, and add, preview, change and remove **panels**.

Anything that deletes asks you first. The server can be turned off, or moved to another port, in **Settings ›
Integration › Agent connection**.

The copilot cannot change the menus, the layouts or the texts.

## Chats

Each project keeps its chats in `copilot/chats/<project>/` in the configuration folder.