# IDistributedApplicationBuilder.addExternalService

- Module: [Aspire.Hosting](/reference/api/typescript/aspire.hosting.md)
- Defined on: [IDistributedApplicationBuilder](/reference/api/typescript/aspire.hosting/idistributedapplicationbuilder.md)
- Version: `13.4.0`
- Kind: `method`

Adds an external service resource

## Definition

```typescript
interface IDistributedApplicationBuilder {
  // ... omitted for brevity
  addExternalService(
      name: string,
      url: ParameterResource): ExternalServiceResource;
}
```

## Signature

```typescript
addExternalService(
    name: string,
    url: ParameterResource): ExternalServiceResource
```

## Parameters

- `name` (`string`)
- `url` ([ParameterResource](/reference/api/typescript/aspire.hosting/parameterresource.md))

## Returns

[ExternalServiceResource](/reference/api/typescript/aspire.hosting/externalserviceresource.md) `builder`

## Defined on

- [IDistributedApplicationBuilder](/reference/api/typescript/aspire.hosting/idistributedapplicationbuilder.md) -- `interface`