S42 AGENT YOUR TERMINAL, SUPERCHARGED

AI coding.
QBasic soul.

The charm of a classic terminal. The power of a modern agent. Your projects, your models and your tools, all in one place.

Install S42 Agent View on GitHub

Linux · macOS · Windows MIT Built with Bun

Explore the agent

S42 Agent running with the QBasic theme: project tabs, a read tool call, a GLM-4.7-Flash response and an always-visible prompt. — The agent, in action.Real screenshot · llama.cpp + GLM-4.7-Flash

6themes with personality

12native tools

∞possibilities with MCP and skills

TUI + CLIyour way to work

YOUR WORKSPACE

A familiar face.
A powerful engine.

An interface with character, built to follow the agent’s work while keeping your project in sight.

A terminal with character.

Menus, mouse support, keyboard shortcuts and six themes. The QBasic desktop, with live responses and tool activity.

Every project, in its place.

Independent conversations, models and drafts. Switch tabs and pick up right where you left off.

Choose your model.

llama.cpp by default, DeepSeek and compatible endpoints. Run local models or connect a remote provider.

Tools to get things done.

12 native tools, MCP, skills and reusable prompts. Plus a CLI to run the agent from your scripts.

TypeScript + Bun0 external runtime package dependenciesRead the user guide

TAKE A CLOSER LOOK

See it. Make it yours.

Screenshots of the running TUI.
Open any image to see every detail.

Dark Graphite theme showing a TypeScript file with syntax colors, line numbers and project tabs. — It has a dark side, too.
Graphite. The same desktop, a different personality.

S42 Agent’s real file explorer open over the QBasic desktop, with folder and file navigation. — Your project, within reach.
Browse folders, find files and attach context.

S42 Agent’s real form for configuring an MCP stdio server: name, command, arguments and status. — Connect your tools.
Configure MCP servers right from the TUI.

Original images of the agent running in a terminal emulator. View all 35 screenshots and their provenance

START BUILDING

One terminal.
One command.

The binary includes the Bun runtime. Install the agent, choose your model and open your first project.

Download the v0.1.1 preview

x64 and ARM64 · Linux with glibc · macOS 13+ · Windows 10 1809+
The LLM server and models are configured separately.

Linux / macOSBash

curl -fsSL https://raw.githubusercontent.com/stock42/s42-agent/main/install.sh | bash

WindowsPowerShell

powershell -c "irm https://raw.githubusercontent.com/stock42/s42-agent/main/install.ps1|iex"

From sourceGit + Bun 1.4.2

git clone https://github.com/stock42/s42-agent.git
cd s42-agent
bun install --frozen-lockfile
bun run dev

The installers verify SHA-256. Then open a new terminal and run s42-agent. Full guide

YOUR FIRST PROJECT

01
Open your folder. Projects → Add project. Just a name and a folder.
02
Pick your model. Configure the provider and select your model in Models.
03
Write your idea. Enter sends. Shift+Enter adds a line. Follow the work live.

Make room for
your next big idea.

Start with S42 Agent

AI coding.QBasic soul.

A familiar face.A powerful engine.

A terminal with character.

Every project, in its place.

Choose your model.

Tools to get things done.

See it. Make it yours.

It has a dark side, too.

Your project, within reach.

Connect your tools.

One terminal.One command.

Make room foryour next big idea.

AI coding.
QBasic soul.

A familiar face.
A powerful engine.

One terminal.
One command.

Make room for
your next big idea.