Slash commands that run at once are saved to your input history once

Slash commands are the commands you type starting with /. Claude Code keeps a history of what you enter, which you can step back through with the up arrow. Commands that run immediately on your machine now save their history entry once, through a single shared step.

If the saved entry would not match what you typed, Claude Code saves it as /name followed by the arguments. A slash command that has to be checked before it runs is saved once that check finishes.