Agent memory

Tab

Moves through the two switches, the selected filter pill, the search button, the Memory updated pill, each memory's Edit and Forget buttons (a row's source and actions appear while it has focus), and the add field.

Arrow left, Arrow right, Home, End

Move between the filter pills; only the selected pill is a tab stop.

Enter, Space

Press the focused control: toggle a switch, file the captured memory, start editing, forget, or restore with Undo.

Enter

In the edit field, saves; in the add field, sorts and adds the memory. Shift+Enter adds a line break while editing.

Escape

Cancels an edit, or closes the search and clears it.

• The card has a level two heading; in the All view and in search results each group has a level three heading with its count, and every group is a labelled group of list items.
• Switches are labelled by their visible titles and described by the line beneath; the meter is a meter role with a text value such as "62% full". Filter pills are toggle buttons with aria-pressed.
• Status is never color alone: the pill reads Memory updated, then Saved to Preferences with a check; the meter's warning pairs color with an icon; the add field shows Added to People with a check or an error with an icon; a paused list carries a note with an icon.
• Icon buttons name the memory they act on, such as "Forget memory: Prefers metric units and 24 hour times", and show a tooltip. Row actions stay visible on touch screens.
• Focus follows each change: into the edit field, back to Edit after saving or cancelling, onto Undo after Forget, back to Forget after Undo, into the search field when it opens and back to the search button when it closes, and to the selected filter when an Undo button times out.
• A polite status region announces captures, adds (including that the preview sorts with a keyword guess), saves, forgets with their undo window, restores, switch changes and the number of search matches.
• Pointer focus draws no ring; keyboard focus shows Arc's shared focus ring, and text fields show focus with their border.

• Capture and add: a copy of the new row lifts off the pill or the field and glides to the row's place in its group on the smooth spring (0.4s, no bounce), moving only by transform, while the row's slot opens beneath it. The row's own text takes over as it lands, under a soft tint that fades over about a second. If the memory's group is filtered out or a search is open, the filter switches or the search clears first, then the copy flies.
• Filtering opens and closes groups and rows by height on a critically damped spring (0.32s, no bounce) with a quick fade, so the list closes its gap instead of jumping. The active pill's background glides to the new pill on a 0.26s spring without bounce.
• The search button widens into a field over the pills with a 240ms ease-out width transition while the pills fade out.
• A row swaps between reading, editing and the undo bar with one crossfade (100ms out, 160ms in) while its height follows on the smooth spring. A saved edit crossfades the old sentence into the new one. When the undo countdown ends, the bar folds away.
• Labels that change (a switch's line, the pill, the add status) crossfade in place with at most 2px of rise; the pill keeps its width with an invisible sizer, so nothing shifts. No per-letter, blurred or morphing text.
• The meter's percentage counts in tabular numerals inside a reserved width and the bar scales on the smooth spring. Sorting a typed memory shows a short shimmer on its status. The undo ring drains linearly.
• Reduced motion skips the flight, places heights and rows immediately, stops the shimmer and the ring, and keeps every state, focus move and announcement.

• The card is at most 640px wide and centered; the list scrolls inside a 380px area that fades at an edge only while there is more to see.
• Below 440px of container width the inset tightens, the subtitle wraps under the title next to the meter, and the filter pills scroll sideways with an edge fade, keeping the selected pill in view.
• Row actions and sources show on hover and focus with a mouse and stay visible on touch screens; their space is always reserved, so text never shifts.
• The Memory updated pill truncates its note with an ellipsis on narrow cards; the full text is in its accessible name.

• Heights animate through motion values and one ResizeObserver per row; the list's edge fade and the filter fades are toggled as attributes, without React renders per frame.
• The flight moves one absolutely positioned copy by transform; scrolling the list to the landing row runs on the same spring.
• Undo windows share one 200ms interval that runs only while something can be restored.
• Search is a plain substring filter; matches are marked by splitting the text, without regular expressions built from input.

• Use it as the memory page of an assistant's settings or in a side panel next to a chat. Pass captured={null} when capture happens in your real chat, or pass what the model just noted to offer it as a pill.
• Write memories as one plain third person sentence without a closing period, such as "Prefers metric units and 24 hour times". Keep them under 200 characters; the editor enforces it.
• Set source.kind to "chat" (reads From a chat) or "manual" (Added by you) with an ISO date; add href to link the source to the chat.
• For memories about a person, set group "people" and person { name, src } to show their portrait. Typed memories that name someone in lib/media get that portrait automatically.
• onChange receives the whole list, so you can store it as is, or act on change.type. Reject from add or edit to surface server errors in place. Forget is final only after undoSeconds, which is when onChange reports it.
• The sample shows Claude as the assistant; set assistantName for your own. Do not invent capture claims for real products.

The full library index for assistants is at /llms.txt.