> For the complete documentation index, see [llms.txt](https://tailwindsdocs.innovativesol.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tailwindsdocs.innovativesol.com/readme/chatflows/langchain/chat-models/google-vertexai.md).

# Google VertexAI

## Prerequisites

1. [Start your GCP](https://cloud.google.com/docs/get-started)
2. Install the [Google Cloud CLI](https://cloud.google.com/sdk/docs/install-sdk)

## Setup

### Enable vertex AI API

1. Go to Vertex AI on GCP and click **"ENABLE ALL RECOMMENDED API"**

<figure><img src="/files/c5sgkZ7HXLeEXmvZ3wUK" alt="" width="563"><figcaption></figcaption></figure>

## Create credential file *(Optional)*

There are 2 ways to create credential file

### No. 1 : Use GCP CLI

1. Open terminal and run the following command

```bash
gcloud auth application-default login
```

2. Login to your GCP account
3. Check your credential file. You can find your credential file in `~/.config/gcloud/application_default_credentials.json`

### No. 2 : Use GCP console

1. Go to GCP console and click **"CREATE CREDENTIALS"**

<figure><img src="/files/kgDdpVu4jae5S1HtkuHi" alt="" width="563"><figcaption></figcaption></figure>

2. Create service account

<figure><img src="/files/gVQnuasf8aXa6dQEH02o" alt="" width="563"><figcaption></figcaption></figure>

3. Fill in the form of Service account details and click **"CREATE AND CONTINUE"**
4. Select proper role (for example Vertex AI User) and click **"DONE"**

<figure><img src="/files/lrkcEdi2Hj781hZCoHT3" alt=""><figcaption></figcaption></figure>

5. Click service account that you created and click **"ADD KEY" -> "Create new key"**

<figure><img src="/files/eZoITTYn16bz6GIveJR5" alt="" width="563"><figcaption></figcaption></figure>

6. Select JSON and click **"CREATE"** then you can download your credential file

<figure><img src="/files/YWtICFu1PIMUjJD0wqtA" alt="" width="563"><figcaption></figcaption></figure>

## Tailwinds

<figure><img src="/files/sZyQLWkibPYOnlV89Bla" alt=""><figcaption></figcaption></figure>

### Without credential file

If you are using a GCP service like Cloud Run, or if you have installed default credentials on your local machine, you do not need to set this credential.

### With credential file

1. Go to Credential page on Tailwinds and click **"Add credential"**
2. Click Google Vertex Auth

<figure><img src="/files/r3Opi0AYbP97NUQfAvrd" alt="" width="563"><figcaption></figcaption></figure>

3. Register your credential file. There are 2 ways to register your credential file.

<figure><img src="/files/mZfSr9fmg86u4tLgUwQz" alt="" width="563"><figcaption></figcaption></figure>

* **Option 1 : Enter path of your credential file**
  * If you have credential file on your machine, you can enter the path of your credential file into `Google Application Credential File Path`
* **Option 2 : Paste text of your credential file**
  * Or you can copy all text in the credential file and paste it into `Google Credential JSON Object`

4. Finally, click "Add" button.
5. **🎉**You can now use ChatGoogleVertexAI with the credential in Tailwinds now!

### Resources

* [LangChain JS GoogleVertexAI](https://js.langchain.com/docs/api/llms_googlevertexai/classes/GoogleVertexAI)
* [Google Service accounts overview](https://cloud.google.com/iam/docs/service-account-overview?)