# addMosquitto

- Module: [CommunityToolkit.Aspire.Hosting.Mosquitto](/reference/api/typescript/communitytoolkit.aspire.hosting.mosquitto.md)
- Version: `13.5.0`
- Kind: `method`
- Source: [GitHub](https://github.com/CommunityToolkit/Aspire/tree/4ff8268fbd97ddd23cb73dc8eff9cc92718156d1)

Adds a Mosquitto container resource to the application. Mosquitto is an open source MQTT message broker, so the resource can be referenced by any MQTT client integration.

## Definition

```typescript
interface IDistributedApplicationBuilder {
  // ... omitted for brevity
  addMosquitto(
    name: string,
    port?: number): MosquittoServerResource
}
```

## Parameters

- `name` (`string`)
- `port` (`number`) `optional`

## Returns

[MosquittoServerResource](/reference/api/typescript/communitytoolkit.aspire.hosting.mosquitto/mosquittoserverresource.md) `builder`

## Applies to

- [IDistributedApplicationBuilder](/reference/api/typescript/communitytoolkit.aspire.hosting.mosquitto/idistributedapplicationbuilder.md)