Download

Get the 123 CLI.

One binary. No runtime. Install it in one line below.

01 · One line

Install from your shell

The installer picks your platform, verifies the checksum, and drops 123 on your PATH.

# macOS / Linux

> curl -fsSL https://123.do/install.sh | sh

# Windows (PowerShell)

> irm https://123.do/install.ps1 | iex

03 · Safe updates

It keeps itself current

The binary checks for new releases and verifies each one against a signature baked in at build time before applying it. You stay on your version until an update passes that check.