UI Patterns
40 patterns · 5 categories
Pattern Library

UI Patterns

A UI pattern library built for coding agents. 40 patterns, each shipping a copy-paste prompt that rebuilds it inside your own codebase — plus a live preview and the source behind it.

Every pattern, three ways

PreviewThe pattern running live in an isolated frame, in whichever theme you are reading in.
SourceIts markup, styles and behaviour, plus a single runnable file carrying its own palette.
PromptA written spec that rebuilds the pattern from scratch — including why each decision is the way it is. Paste it into Claude Code, Cursor, or any coding agent.

The prompts are the point. Each one is written to survive being handed to an agent with no other context: it names the surfaces the pattern belongs on, spells out the constraint that makes it work, and calls out the failure it exists to prevent. Nothing here is a dependency you install.

40 patterns
NameKindDate addedDescription
Windowed schedule grid Data displayAug 11, 2026Rows of resources against a fixed time window, where each block is sized by its overlap with the window rather than by its own duration.
Benchmark progress bar Data displayAug 11, 2026Places a raw figure on a scale of external benchmarks instead of printing it plain.
Cross-highlight matrix Data displayAug 11, 2026A two-axis lookup table with both headers sticky, hover lighting the full row and column at once, and a durable click-to-pin selection for touch.
Left-truncating paths Data displayAug 11, 2026Shortens a long path by dropping whole segments from the left, because the tail is what tells two paths apart.
Shape-mark sequence UpdatedData displayAug 21, 2026A sequence compressed into a row of small marks whose shape carries the state.
Linked month bars Data displayAug 21, 2026A month-by-month volume timeline built from plain divs where every aggregate row links to the filtered view that produced it.
Glass vial meter Data displayAug 21, 2026A vertical potion-vial meter whose liquid fills a wide bulb first and then rises into a narrow neck — all CSS, no images.
Partitioned stage bar Data displaySep 12, 2026Progress for work with several possible endings, drawn as a census rather than a fraction.
Term-by-term derivation Data displaySep 12, 2026A computed figure shown with the audit trail behind it — the number is the product and the derivation is the receipt.
Plan preview tree UpdatedData displaySep 12, 2026A dry run shown as a before-and-after tree with counts now, after, and the difference.
Uniform slot shell Data displaySep 12, 2026One card shell many independent sources render through, where the shell does the capping.
Object-shaped cards UpdatedLayoutAug 11, 2026Where a record stands for a physical thing, the card is drawn as that thing — nine variations in pure gradients.
Adaptive tile mosaic LayoutAug 11, 2026A container with no artwork draws one from up to four member tiles, grid tracks following tile count.
Ground-scrimmed artwork UpdatedLayoutAug 11, 2026Text printed over unreviewed artwork, scrimmed to an alpha that can be written down rather than guessed.
Hairline stat strip UpdatedLayoutAug 21, 2026Stat tiles joined by hairlines that are grid gap, not borders.
Annotated transcript LayoutAug 21, 2026Conversation bubbles with a speaker-colored spine and a fixed metadata gutter.
Cork notice board LayoutAug 21, 2026Pinned paper notes on a cork board where every texture is layered CSS gradients.
Hotspot marker layer UpdatedLayoutSep 12, 2026Markers at percentage coordinates over a fixed-aspect picture, turning into a list when too narrow.
Line-art empty states LayoutSep 12, 2026Inline drawings for empty surfaces stroked in the inherited text colour.
Column-flow wall LayoutSep 12, 2026Cards flowing down columns instead of across rows, with the reading-order cost stated plainly.
Scroll edge shadows InteractionAug 11, 2026An inset shadow shown only on the edge that has more content behind it.
Frozen-batch deck InteractionAug 11, 2026A one-card-at-a-time review queue whose batch is snapshotted at mount.
Controls beside the anchor UpdatedInteractionAug 11, 2026Per-card controls over a fully-linked card without nesting interactive elements in the anchor.
Pluggable canvas visualizer UpdatedInteractionAug 11, 2026One canvas, a registry of draw modes, each mode owning its entire frame.
Roving-grid board UpdatedInteractionAug 21, 2026A dense grid of state cells that is one tab stop with arrow-key navigation.
Section rail InteractionAug 21, 2026Sticky vertical rail on wide screens, wrapping tab row on narrow ones, from the same markup.
Ledge-press buttons InteractionAug 21, 2026Buttons on a solid ledge shadow that travel down onto it when pressed.
Guarded control UpdatedInteractionSep 12, 2026A blocked control stays focusable, carries the reason as text, and refuses in its handler.
Polled job card UpdatedInteractionSep 12, 2026One card for every state a background job passes through.
Entry-transform motion InteractionSep 12, 2026FLIP-style motion between two rendered states when the old DOM is already gone.
Slot-first picker UpdatedInteractionSep 12, 2026Assignment that starts at the destination slot, then narrows the catalogue.
Undo toast FormsAug 28, 2026A destructive action with no confirm dialog, held behind a toast and committed when it expires.
Blast-radius confirm NewFormsSep 28, 2026A confirm dialog that names everything a delete cascades and blocks dismissal while it runs.
Batch action bar UpdatedFormsAug 28, 2026A bar that exists only while something is selected, states the count in words, caps at five actions.
Filtered to zero FormsSep 12, 2026The three empty states a list actually has, written as three different screens.
Parsed query chips FormsSep 12, 2026A search box that echoes back how it read the text as removable chips.
Compound-value picker FormsSep 12, 2026One grouped select whose value carries both the kind and the id.
Ground-referenced color UpdatedColorAug 11, 2026Colors solved against the page's own ground token so they invert correctly between themes.
Single-property color variants UpdatedColorAug 21, 2026One custom property carries the hue; border, fill, spine and dot derive from it.
Controls on an unknown fill UpdatedColorSep 12, 2026Opaque controls, a gradient-darkened fill, and a two-tone focus ring on a surface whose colour arrives from outside.