Design Atlas
Type
component library
Verdict
Useful
Licence
Conditional licence, source availablesource-availableThe toolkit is source-available under PolyForm Perimeter 1.0.0; the code and catalogue can be viewed without payment.
Agent channels
none
Pricing
free
Reviewed

← Atlas · Topics: components, inspiration, color

Sephiro ​

Type
component library
Verdict
Useful
Licence
Conditional licence, source availablesource-availableThe toolkit is source-available under PolyForm Perimeter 1.0.0; the code and catalogue can be viewed without payment.
Agent channels
none
Pricing
free
Reviewed

What it is ​

Sephiro is a React and Preact UI toolkit with a public component and theme catalogue. The home page groups 71 components into seven sections and lets visitors preview the same interface in six built-in themes.

When to open it ​

Open it to study how a component library can make theme changes legible across a whole product, or to compare related controls, forms, overlays, navigation, data feedback and agent UI patterns.

Most useful ​

  • The dark and light home variants show the same restrained layout with distinct surface and type contrast.
  • The theme page offers directly selectable presets, making palette changes easy to compare without losing context.
  • The component section pages expose controls and states alongside source examples.
  • The Agent UI section collects citation, tool-call and plan-card patterns in one place.

Using it with agents ​

The site has no advertised MCP, registry or CLI channel. Public section and component pages provide the visual examples; a GitHub link leads to the toolkit repository.

Watch out for ​

  • PolyForm Perimeter is source-available, not a permissive open-source licence; review its terms before reusing code.
  • The ?ink=dark query selects the dark presentation. Use the theme selector to compare the other presets.
  • This is a young toolkit with a deliberately compact catalogue; treat its patterns as examples rather than a complete platform standard.

Reusable ideas ​

  • Make theme previews act on the catalogue itself so users can judge contrast in context.
  • Group a component catalogue by the job a control performs, then reveal examples within each group.
  • Keep the main installation action copyable and pair it with a short explanation of the design system.
  • Give agent-facing components their own browsable family instead of scattering them among generic controls.

Base UI, shadcn/ui, Design System Checklist