Everything you need to show an AI agent at work: the composer, the conversation, reasoning, tool calls, plans that wait for approval, diffs, terminals, citations and a live trace. Works with the Vercel AI SDK, or any stream.
A scripted agent run, built only from Cuelark agent components. Send the prompt to start.
Tax is now computed in one helper and applied only to customers with a tax ID. Totals match across the API and PDFs.
Something the agent made, in its own panel with actions.
Centralize tax in tax(): zero without a tax ID, cent-rounded otherwise. Both the API and PDFs call it; two new tests lock the behavior in.
Flip between regenerated versions of a reply.
The steps an agent took, on a rail with live status.
A restore point in a conversation.
1export function tax(i: Invoice) {2 if (!i.customer.taxId) return 03 return Math.round(i.subtotal * i.rate * 100) / 1004}5 6export function total(i: Invoice) {7 return i.subtotal + tax(i)8}Code in a reply: filename, line numbers, highlights, wrap and copy.
Send the weekly report to 24 recipients?
The agent drafted the email from this week's dashboard.
Run a command in production
This deletes rows and cannot be undone.
psql $DATABASE_URL -c "delete from sessions where expires_at < now()"
An agent asking permission, with press-and-hold for risky actions.
How full the context window is, with tokens and cost on hover.
A transcript that sticks to the bottom while streaming and lets go when you scroll.
| 1 | 1 | import { Invoice } from './types' |
| 2 | 2 | |
| 3 | −export const tax = (i: Invoice) => i.subtotal * i.rate | |
| 3 | +export function tax(i: Invoice) { | |
| 4 | + if (!i.customer.taxId) return 0 | |
| 5 | + return Math.round(i.subtotal * i.rate * 100) / 100 | |
| 6 | +} | |
| 4 | 7 | |
| 5 | 8 | export function total(i: Invoice) { |
| 6 | 9 | return i.subtotal + tax(i) |
| 7 | 10 | } |
A change an agent proposes to a file, with accept and reject.
The files an agent touched, with added, modified and deleted marks.
Numbered citations inside a sentence, with a preview on hover.
Three changes shipped: proration now rounds to the cent, failed renewals retry twice before emailing the customer, and invoices include the tax ID when one is on file.
One conversation turn: user bubble or assistant document, with hover actions.
Pick the model: grouped by provider, searchable, with context and tags.
A plan an agent asks to run, with approve, reject and auto-run countdown.
The composer for prompting an agent: autosize, attachments, model picker, stop.
Messages queued while the agent is busy, reorderable.
A model's thinking, streamed live, then folded to "Thought for 6s".
"Used N sources" with stacked tiles, expanding into the list.
TypeError: Cannot read properties of undefined (reading 'taxId')
Readable errors: your frames highlighted, library frames folded.
A reply arriving token by token, without the jitter.
Work delegated to a sub-agent, nested with its live activity.
Follow-up prompt chips that scroll sideways on small screens.
A to-do list the agent works through, with progress.
Streaming command output in a dark console.
expected -42.5 to equal -42.50 at invoice.test.ts:31
Pass/fail summary with failing assertions inline.
A light sweeping through muted text: the "working" status.
{
"env": "production"
}Error: build failed: Type error in src/routes/index.tsx:42
A tool call: name, live status, timing, parameters and result.
An agent run on one timeline: agents, model calls and tools.
A small browser for what the agent built, with device widths.