Plus Jakarta Sans.
Plus Jakarta Sans is the shared brand family. Use it for marketing headings, body copy, navigation, and UI. Use a system monospace only for API examples and token values.
The locally hosted variable font is shared with the homepage. These are live specimens, not screenshots. Weights 400–800 cover prose, controls, and display typography.
Hero
54–88px · 800 · 0.9940–60px on narrow screens
The scheduling layer
for AI agents.
Section
30–44px · 800 · 1.05One API. Real appointments.
Card title
22px · 700 · 1.2The right provider.
Body
18px · 400 · 1.6Give your AI agent everything it needs to book the right provider, at a time that’s actually available.
Interface
14px · 650 · 1.4Your appointment is booked for Tuesday at 2:30 PM.
Metadata
12px · 500 · 1.4Compact illustrative hero cards use smaller text to support the photograph. Full-size customer interfaces use the body and interface specimens above.
Hierarchy rule: Booker pages do not use eyebrow labels above headings or content groups unless they are explicitly requested. They add a competing level of hierarchy. Lead with the heading itself; establish structure through type size, weight, spacing, and grouping. Use small labels only for necessary information such as dates, statuses, or field labels, in sentence case with normal letter spacing.
Keep prose around 45–70 characters per line. Use sentence case. Limit bold to hierarchy and emphasis. Use intentional desktop headline wrapping, but allow natural reflow on smaller screens.