Dry-Run Preview

Everything an agent would change, field by field, before any of it happens.

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Category
AI Agent
Access
Pro
Source
431 lines · one file
States
7 drawn
Added
12 Oct 2026

The decision inside it

Deletes are loud

Every deletion is red, counted at the top and confirmed again before it goes, because it is the one change that cannot be taken back from here.

When to use it

Use Dry-Run Preview before an agent applies changes: every proposed create, update and delete with before and after, warnings, and approve, reject or apply for all or a selection.

Installation

How you get it

Paste this into Claude Code, Cursor, Codex or any coding agent. It installs the file and uses it as it is, instead of writing a new one.

Use Liro's Dry-Run Preview for this.
Install it: npx shadcn@latest add @liro/dry-run-preview
(the @liro registry is set up in components.json, with LIRO_KEY in .env.local)
Import it from @/components/ui/dry-run-preview.
Do not rewrite or restyle it. Pass my data through its props
and keep its built-in states.

For the full brief with every prop and the mistakes assistants usually make, use Copy prompt above. Pro components install through the @liro registry with your CLI token: see the Namespaced tab.

Usage

components/preview-changes.tsx
import { DryRunPreview, type DryRunPreviewData } from "@/components/ui/dry-run-preview";

const preview: DryRunPreviewData = {
  id: "dr-1",
  title: "Update 2 contacts",
  impactSummary: "2 records change; nothing is deleted.",
  changes: [
    { id: "c1", resource: "Ada Moss", resourceType: "contact", operation: "update", before: { stage: "Lead" }, after: { stage: "Customer" } },
    { id: "c2", resource: "Orbit Labs", resourceType: "company", operation: "create", after: { plan: "Team" } },
  ],
};

export function PreviewChanges({ apply }: { apply: (ids: string[]) => Promise<void> }) {
  return <DryRunPreview preview={preview} selectable onApply={apply} />;
}

API reference

“Copy prompt” above puts a full brief on your clipboard, install command, dependencies, props, and the mistakes an assistant usually makes with this component.

Props

Read from the component’s own TypeScript interface when the site is built, so this table cannot drift from the file you install.

TypeNotes
previewDryRunPreviewData Yes–
selectableboolean NoEach change gets a checkbox, and only ticked ones are sent.
onChangeSelect(id: string, selected: boolean) => void No–
onApprove(ids: string[]) => void | Promise<void> NoApprove the ticked changes. May return a promise.
onReject(reason?: string) => void | Promise<void> NoReject the whole batch, with an optional reason. May return a promise.
onApply(ids: string[]) => void | Promise<void> NoApply the ticked changes. May return a promise.
isSubmittingboolean NoSubmitting, if you track it yourself.
actionErrorReact.ReactNode NoAn error from your side.
lookLook NoLayered sets it in a tray, the heading above the card and the status in the strip below. Flat is one card.

Dependencies

npm packages

clsxframer-motionlucide-reacttailwind-merge

Liro foundations, installed alongside it

liro-themebadgebuttoncheckboxstate

States

All of them are drawn by the component. None is left for you to design.

  • Proposed
  • Deselected
  • Approved
  • Confirm delete
  • Applied
  • Partly failed
  • Rejected

Accessibility

  • Keyboard reachable throughout, in visual order
  • Focus trapped in overlays, Escape closes them
  • Focus returns to whatever opened it
  • Live regions announce what changed, not that something did
  • Honours prefers-reduced-motion

Responsive behavior

  • Sizes to its container, not the viewport
  • Usable from 320px up
  • Pointer-based interaction, so trackpad and touch both work
  • No hover-only affordances