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Postede / Interface guidelines

Design system

The components, patterns, and decisions behind our product. Find the right primitive, try its behavior, and carry the same details into your next screen.

Shared primitives

Source-owned shadcn components with Radix behavior.

Local conventions

Real imports, supported APIs, and accessible composition.

Agent-readable

The same reference as Markdown and structured JSON.

Find your building block

34 documented components

Actions

Use one white primary action per task. Outline actions are secondary; ghost actions are quiet; destructive actions require confirmation.

Fields & validation

Keep short, sentence-case labels above controls. Explain errors next to the field and preserve entered values after failure.

Selection

Checkboxes select independent options. Switches apply an immediate setting. Radios choose one option. Toggle groups switch between a small set of views.

Navigation & disclosure

Tabs switch related views in one context. Accordions reveal related sections. A disclosure expands optional detail without navigating.

Overlays & menus

Dialogs contain focused tasks. Alert dialogs confirm consequential actions. Menus offer commands; popovers hold small interactive tools; tooltips provide short supplementary help.

Data & surfaces

Use flat panels for one major surface and cards for repeated objects. Tables compare records; badges emphasize meaningful status; avatars always include a fallback.

Feedback & loading

Alerts explain persistent conditions. Toasts acknowledge completed work. Progress shows measurable work; skeletons preserve the shape of loading content.

Start with the existing system

Use named variants and semantic tokens. Keep forms, focus, pending states and mobile behavior intact. Compatibility adapters preserve existing product contracts; new independent UI starts with declarative primitives.

Read the foundations
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