ibm-cloud-sdk-core/build/docs/ibm-cloud-sdk-core.vpcinstanceauthenticator._constructor_.md

Core functionality to support SDKs generated with IBM's OpenAPI SDK Generator.

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## VpcInstanceAuthenticator.(constructor)

Create a new VpcInstanceAuthenticator instance.

**Signature:**

```typescript
constructor(options: Options);
```

## Parameters

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Parameter


</th><th>

Type


</th><th>

Description


</th></tr></thead>
<tbody><tr><td>

options


</td><td>

Options


</td><td>

Configuration options for VpcInstance authentication. This should be an object containing these fields: - url: (optional) the endpoint URL for the VPC Instance Metadata Service (default value: "http://169.254.169.254") - iamProfileCrn: (optional) the CRN of the linked IAM trusted profile to be used to obtain the IAM access token - iamProfileId: (optional) the ID of the linked IAM trusted profile to be used to obtain the IAM access token


</td></tr>
</tbody></table>

## Remarks

At most one of "iamProfileCrn" or "iamProfileId" may be specified. If neither one is specified, then the default IAM profile defined for the compute resource will be used.