# KubernetesEnvironmentResource.addHelmChart

- Module: [Aspire.Hosting.Kubernetes](/reference/api/typescript/aspire.hosting.kubernetes.md)
- Defined on: [KubernetesEnvironmentResource](/reference/api/typescript/aspire.hosting.kubernetes/kubernetesenvironmentresource.md)
- Version: `13.4.0-preview.1.26281.18`
- Kind: `method`

Adds an external Helm chart to be installed in the Kubernetes environment. The chart is installed via `helm upgrade --install` as a pipeline step after the main application Helm chart is deployed.

## Definition

```typescript
interface KubernetesEnvironmentResource {
  // ... omitted for brevity
  addHelmChart(
      name: string,
      chartReference: string,
      chartVersion: string): KubernetesHelmChartResource;
}
```

## Signature

```typescript
addHelmChart(
    name: string,
    chartReference: string,
    chartVersion: string): KubernetesHelmChartResource
```

## Parameters

- `name` (`string`)
- `chartReference` (`string`)
- `chartVersion` (`string`)

## Returns

[KubernetesHelmChartResource](/reference/api/typescript/aspire.hosting.kubernetes/kuberneteshelmchartresource.md) `builder`

## Defined on

- [KubernetesEnvironmentResource](/reference/api/typescript/aspire.hosting.kubernetes/kubernetesenvironmentresource.md) -- `handle`