Event barcode
Every event as a thin line, by service.
Definition · Updated Nov 2, 2026
An event barcode draws every event as a thin line on a time axis, one row per service, coloured by outcome. Bursts, gaps and error streaks show as patterns. Use it for API requests, logins or deploys over a day.
Pay once. Every update included.
Live preview
Sample data: requests to chat API, embeddings and agents over 24 hours, OK, slow and error
- Data shape
- Per row: a count, error and slow shares, and an hourly pattern
- Good for
- API requests, logins, deploys
- Avoid when
- Counts per period are enough
- Sizes
- XS, S, M and L, re-laid out from the data
Anatomy
Inspect it like the Figma file.
The same layers, names and tokens as the component. Select one to read its size, fill and style.
Layers
061 / Event barcode
- Layer
- event
- Type
- Rectangle
- Size
- 1 × 61
- Fill
- status/danger
- Group
- Marks · 37
Layers
061 / Event barcode
- Layer
- event
- Type
- Rectangle
- Size
- 1 × 33
- Fill
- status/danger
- Group
- Marks · 37
Layers
061 / Event barcode
- Layer
- event
- Type
- Rectangle
- Size
- 1 × 24
- Fill
- status/danger
- Group
- Marks · 37
Sizes
Re-laid out, never scaled.
The same data at XS, S, M and L. Every size is redrawn from the data, so text and line weights never shrink.
M against S
Width360 px480 px
Plot328 px440 px
Labels88
Marks3737
Height212 px246 px
Same tokens at every size: text styles, 1 px lines and mark radius stay put.
When to use
Every event, in time.
Three signs it fits, and three signs another type fits better.
Code and Figma
One name in Figma and in code.
Every Figma property is a prop with the same name and values. One command installs it.
Figma
chart/061-barcode-requests
npx shadcn add @chartory/event-barcodeimport { EventBarcode } from "@/components/chartory/event-barcode"import { serviceRequests } from "./service-requests"export function ServiceRequests() { return ( <EventBarcode data={serviceRequests} size="m" legend={true} /> )}Hearth widget
Event barcode as a widget.
The chart in a Hearth card with a hero number and two blocks. One token set, light and dark.
EmberPreset
ChartoryDefault preset
Pick the blocks, the size and the preset for your own widget.
Read the Hearth widget docsFAQ
Event barcode questions.
What people ask before they put an event barcode in a dashboard.
Something else?
hello@usechartory.comOK, slow and error, named in the legend.
The last 24 hours, from 00:00 to now.
One data object in the sample’s shape: per row: a count, error and slow shares, and an hourly pattern. The docs page lists every field and links its JSON Schema; the sample data comes with the component, so you can start from it and swap in your own.
Series take the preset’s data colours in order, and states such as up, down or warning take its status colours. Change the preset in Figma or in code to recolour every chart at once.
XS, S, M and L, in light and dark. Each size is laid out again from the data, so text and lines keep their size.
Yes. It plays in when it scrolls into view, and when the data changes every mark moves from its old place to its new one. With reduced motion on, it does not move.
Yes. The React component is free in the public registry in Hearth, no token needed; Signal comes with Code and Complete. The Figma component comes with Figma and Complete.
Ask for it by name. The MCP server tells the agent what data it needs and runs the same command: npx shadcn add @chartory/event-barcode. You review the diff.
Related types
Other ways to show schedule and status.
The same question, a different shape of answer. Every type ships in Figma and in code.
Same family
Schedule and status
19 types in Chartory answer this question.