NewI built an AI-friendly UI pattern library, and every pattern ships its prompt.New essay: the AI-friendly pattern library.Read the essay

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

Preview

The pattern running live in an isolated frame, in whichever theme you are reading in.

Source

Its markup, styles and behaviour, plus a single runnable file carrying its own palette.

Prompt

A 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
Data display

Windowed schedule grid

Rows of resources against a fixed time window, where each block is sized by its overlap with the window rather than by its own duration.

Added Aug 11, 2026
scheduletimelinegrid
Data display

Benchmark progress bar

Places a raw figure on a scale of external benchmarks instead of printing it plain.

Added Aug 11, 2026
progressbenchmarkscss-only
Data display

Cross-highlight matrix

A 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.

Added Aug 11, 2026
tablematrixsticky
Data display

Left-truncating paths

Shortens a long path by dropping whole segments from the left, because the tail is what tells two paths apart.

Added Aug 11, 2026
truncationpathstext-overflow
Data displayUpdated

Shape-mark sequence

A sequence compressed into a row of small marks whose shape carries the state.

Added Aug 21, 2026
steppersparklineseries
Data display

Linked month bars

A month-by-month volume timeline built from plain divs where every aggregate row links to the filtered view that produced it.

Added Aug 21, 2026
timelinedrill-downcss-only
Data display

Glass vial meter

A vertical potion-vial meter whose liquid fills a wide bulb first and then rises into a narrow neck — all CSS, no images.

Added Aug 21, 2026
meterskeuomorphiccss-only
Data display

Partitioned stage bar

Progress for work with several possible endings, drawn as a census rather than a fraction.

Added Sep 12, 2026
progressstacked-barbatch
Data display

Term-by-term derivation

A computed figure shown with the audit trail behind it — the number is the product and the derivation is the receipt.

Added Sep 12, 2026
explainabilitycalculatordisclosure
Data displayUpdated

Plan preview tree

A dry run shown as a before-and-after tree with counts now, after, and the difference.

Added Sep 12, 2026
dry-rundifftree
Data display

Uniform slot shell

One card shell many independent sources render through, where the shell does the capping.

Added Sep 12, 2026
dashboardwidgetscards
LayoutUpdated

Object-shaped cards

Where a record stands for a physical thing, the card is drawn as that thing — nine variations in pure gradients.

Added Aug 11, 2026
cardscss-onlygradients
Layout

Adaptive tile mosaic

A container with no artwork draws one from up to four member tiles, grid tracks following tile count.

Added Aug 11, 2026
css-gridcss-onlyno-assets
LayoutUpdated

Ground-scrimmed artwork

Text printed over unreviewed artwork, scrimmed to an alpha that can be written down rather than guessed.

Added Aug 11, 2026
layoutcss-onlygradients
LayoutUpdated

Hairline stat strip

Stat tiles joined by hairlines that are grid gap, not borders.

Added Aug 21, 2026
statscss-gridcss-only
Layout

Annotated transcript

Conversation bubbles with a speaker-colored spine and a fixed metadata gutter.

Added Aug 21, 2026
conversationgutterstatus-roles
Layout

Cork notice board

Pinned paper notes on a cork board where every texture is layered CSS gradients.

Added Aug 21, 2026
skeuomorphicgradientsno-assets
LayoutUpdated

Hotspot marker layer

Markers at percentage coordinates over a fixed-aspect picture, turning into a list when too narrow.

Added Sep 12, 2026
hotspotspointer-eventsaspect-ratio
Layout

Line-art empty states

Inline drawings for empty surfaces stroked in the inherited text colour.

Added Sep 12, 2026
empty-statesvgcurrentcolor
Layout

Column-flow wall

Cards flowing down columns instead of across rows, with the reading-order cost stated plainly.

Added Sep 12, 2026
masonrycolumnsbreak-inside
Interaction

Scroll edge shadows

An inset shadow shown only on the edge that has more content behind it.

Added Aug 11, 2026
scrollingaffordancelists
Interaction

Frozen-batch deck

A one-card-at-a-time review queue whose batch is snapshotted at mount.

Added Aug 11, 2026
queuereview-flowanimation
InteractionUpdated

Controls beside the anchor

Per-card controls over a fully-linked card without nesting interactive elements in the anchor.

Added Aug 11, 2026
cardsaccessibilitykeyboard
InteractionUpdated

Pluggable canvas visualizer

One canvas, a registry of draw modes, each mode owning its entire frame.

Added Aug 11, 2026
canvasvisualizationregistry
InteractionUpdated

Roving-grid board

A dense grid of state cells that is one tab stop with arrow-key navigation.

Added Aug 21, 2026
keyboardroving-tabindexaccessibility
Interaction

Section rail

Sticky vertical rail on wide screens, wrapping tab row on narrow ones, from the same markup.

Added Aug 21, 2026
navigationtocresponsive
Interaction

Ledge-press buttons

Buttons on a solid ledge shadow that travel down onto it when pressed.

Added Aug 21, 2026
buttonsskeuomorphicpress
InteractionUpdated

Guarded control

A blocked control stays focusable, carries the reason as text, and refuses in its handler.

Added Sep 12, 2026
aria-disableddisabledpreconditions
InteractionUpdated

Polled job card

One card for every state a background job passes through.

Added Sep 12, 2026
progresspollingbackground-job
Interaction

Entry-transform motion

FLIP-style motion between two rendered states when the old DOM is already gone.

Added Sep 12, 2026
animationtransitionsreflow
InteractionUpdated

Slot-first picker

Assignment that starts at the destination slot, then narrows the catalogue.

Added Sep 12, 2026
assignmentpickeraria-pressed
Forms

Undo toast

A destructive action with no confirm dialog, held behind a toast and committed when it expires.

Added Aug 28, 2026
undotoastdestructive
FormsNew

Blast-radius confirm

A confirm dialog that names everything a delete cascades and blocks dismissal while it runs.

Added Sep 28, 2026
confirm-dialogdestructivecascade
FormsUpdated

Batch action bar

A bar that exists only while something is selected, states the count in words, caps at five actions.

Added Aug 28, 2026
selectionbulk-actionstoolbar
Forms

Filtered to zero

The three empty states a list actually has, written as three different screens.

Added Sep 12, 2026
empty-statefiltersearch
Forms

Parsed query chips

A search box that echoes back how it read the text as removable chips.

Added Sep 12, 2026
searchquery-syntaxchips
Forms

Compound-value picker

One grouped select whose value carries both the kind and the id.

Added Sep 12, 2026
selectoptgrouppolymorphic
ColorUpdated

Ground-referenced color

Colors solved against the page's own ground token so they invert correctly between themes.

Added Aug 11, 2026
colorcontrastcolor-mix
ColorUpdated

Single-property color variants

One custom property carries the hue; border, fill, spine and dot derive from it.

Added Aug 21, 2026
colorcolor-mixcustom-properties
ColorUpdated

Controls on an unknown fill

Opaque controls, a gradient-darkened fill, and a two-tone focus ring on a surface whose colour arrives from outside.

Added Sep 12, 2026
contrastbrand-colorfocus-ring

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