Connecting to Google VertexAI

Vertex AI connections enable Flow actions to interact with Google Vertex AI resources, such as Large Language Models (LLMs).

How to create a new VertexAI Connection

When adding a Google VertexAI action (such as Agent Model or Chat Completion), you can select an existing VertexAI connection or create a new one:

1. In the Flowchart, select the action you want to connect.
2. In the property panel, select Connection.
3. Toggle Create New Connection on.
4. Fill in the required fields:
   • Name: Enter a unique, descriptive name.
   • Location: Enter the region name (see Locations).
   • Json key: Paste the JSON key associated with your VertexAI account.

Note: Not all services are available in all locations.

Properties

Name	Description
Name	Name of the connection.
Location	Region (datacenter) where your model runs. See Locations. Example: europe-west4.
Json key	Service Account key for authentication (paste the full content of the JSON file acquired when creating a new key).

How to obtain the Json key

1. Account Setup

1. Sign in or sign up at the Google Cloud Console with your Google account.
2. Click the Project selector (top bar) → New Project → enter a name → Create.
3. Ensure Billing is enabled for your project (left menu: Billing).

2. Enable VertexAI API

1. In the Console left menu: APIs & Services → Library.
2. Search for "Vertex AI API" (aiplatform.googleapis.com) → click Enable.

3. Create Service Account

1. In the Console left menu: IAM & Admin → Service Accounts → Create Service Account.
2. Enter a name/ID and description → Create.
3. In the Role field, select Vertex AI User.
4. Click Continue → Done.

4. Create and Download the Json key

1. In the Console left menu: Service Accounts.
2. On your Service Account row, click the ⋮ button to the right → Manage keys.
3. Click Add key → Create new key → select JSON → Create.
4. Download the JSON key file. Paste its full content of this file into the Json key field.