Render Mermaid diagrams in Grok Build

render_mermaid under [ui] controls whether Mermaid diagram blocks in the transcript render as diagrams in the TUI. Official values: Settings reference.

Values

Value	Default?	Meaning
auto	yes	Build chooses when to render Mermaid blocks
on		Always render Mermaid diagram blocks

Pin it in user config

[ui]
render_mermaid = "on"

Or leave the default:

[ui]
render_mermaid = "auto"

File path: ~/.grok/config.toml / $GROK_HOME/config.toml. Change UI options from /settings (alias /config) as well.

Related display toggles

Thinking / reasoning blocks: Show thinking blocks in Grok Build. Fold consecutive tool rows: Fold tool rows in Grok Build. UI density: Tune Grok Build UI density.

Pitfalls

• Editing project .grok/config.toml for [ui] — use user config.
• Inventing an off value — the published reference documents auto and on only; stick to those until docs list more.