CLAUDE_CODE_SCROLL_SPEEDI

Updated October 14, 2026 by Alex Sorokoletov

CLAUDE_CODE_SCROLL_SPEEDI is a Claude Code environment variable. Removed in v2.1.228, so current releases ignore it. It is not in the official reference.

Status	Removed in v2.1.228
Added	Added between v2.1.219 and v2.1.221
Category	Terminal and UI
Official docs	Not listed

How to set it

For one session, export it in the shell that starts Claude Code:

export CLAUDE_CODE_SCROLL_SPEEDI=<value>
claude

To apply it to every session, add it to the env object of a settings file:

// ~/.claude/settings.json
{
  "env": {
    "CLAUDE_CODE_SCROLL_SPEEDI": "<value>"
  }
}

Related variables

CLAUDE_CODE_DISABLE_VIRTUAL_SCROLL: Disable virtual scrolling in terminal UI.
CLAUDE_CODE_SCROLL_SPEED: Controls the scroll speed within the terminal UI.
CLAUDE_CODE_SCROLL_SPEEDI30
CLAUDE_AX_PREPARK_MS
CLAUDE_AX_SCREEN_READER
CLAUDE_AX_STARTUP_QUIET_MS: Startup quiet window (milliseconds) for screen-reader mode.
CLAUDE_CODE_ACCESSIBILITY: Enable accessibility mode; disables cursor hiding.
CLAUDE_CODE_ALT_SCREEN_FULL_REPAINT

Frequently asked questions

Which Claude Code version has CLAUDE_CODE_SCROLL_SPEEDI?

Removed in v2.1.228, so current releases ignore it.

How do I set CLAUDE_CODE_SCROLL_SPEEDI?

Export it before starting Claude Code (export CLAUDE_CODE_SCROLL_SPEEDI=value), or add it to the "env" object in ~/.claude/settings.json to apply it to every session.

All variables, searchable: Claude Code environment variables.