Show the timeline rail in Grok Build

The timeline rail is a per-turn tick strip that replaces the usual scrollbar. It is off by default. Official: Settings reference.

Turn it on

In user config (~/.grok/config.toml or $GROK_HOME/config.toml):

[ui]
show_timeline = true

Restart or open a new session if the rail does not appear after saving. There is no dedicated /timeline slash command in the published Modes and Commands table — use the config key.

Pair with other UI toggles

Setting / command	Effect
/timestamps or show_timestamps	Clock time next to messages (default on)
/compact-mode or compact_mode	Denser message padding
/vim-mode or vim_mode	Bare-letter scrollback keys
page_flip_on_send	Snap the sent prompt to the top of the viewport (default on)

Pitfalls

• show_timeline lives under [ui] in user config, not project .grok/config.toml.
• The rail is Build TUI chrome. It is not the X timeline connector (Read your X timeline in Grok Bot).