# Versions (/docs/products/dash-dots/reference/dash-api/versions)

The Dash API has a version, and this reference describes version 1.0. A newer minor version, such as 1.1, only adds: new calls, new options and new fields in results. Nothing in 1.0 is removed or renamed within version 1.

`dash.minApiVersion` in `dot.json` is the oldest version your dot needs, `1.0` unless you set it. Dash opens a dot only when it offers that version or a newer one. When a later version adds a call you want, and you still want older Dash to open your dot, check for the call first. `supports` takes the call's name without `dash.`. Say a later version added `dash.media.scanBarcode`:

```ts
if (this.dash.supports('media.scanBarcode')) {
  // Only a Dash that has the call runs this.
}
```

Every call in this reference is in version 1.0.

## `dash.supports`

```ts
dash.supports(feature: DashFeature): boolean
```

Whether this Dash has `feature`: a call, such as `'contacts.pickPhone'`, or a field added to a call later.