<!-- Public documentation export; not library implementation source. -->
# Bar

[Integration guide](https://docs.lumencharts.com/charting-library/datafeed/history) · [Reference index](https://docs.lumencharts.com/charting-library/api/)

Public contract reference. This declaration describes types and callback shapes; availability is constrained by the linked integration guide and the runtime capability. Legacy product-specific fields are not a promise of implementation.

## time {#time}

```ts
time: number;
```

Use the type signature above and the integration guide for the owning capability.

## open {#open}

```ts
open: number;
```

Use the type signature above and the integration guide for the owning capability.

## high {#high}

```ts
high: number;
```

Use the type signature above and the integration guide for the owning capability.

## low {#low}

```ts
low: number;
```

Use the type signature above and the integration guide for the owning capability.

## close {#close}

```ts
close: number;
```

Use the type signature above and the integration guide for the owning capability.

## volume {#volume}

```ts
volume?: number;
```

Use the type signature above and the integration guide for the owning capability.

---
Documentation page: https://docs.lumencharts.com/charting-library/api/Bar