This plugin provides API calls you can use with Bubble's Get data from an external API feature:
List People - Provides a list of the authenticated user's contacts.

Search People - Provides a list of contacts in the authenticated user's grouped contacts that matches the search query. The query matches on a contact's names, nickNames, emailAddresses, phoneNumbers, and organizations fields that are from the CONTACT source.

Single Profile - Provides information about a person by specifying a resource name.

User's Profile - Provides information about the authenticated user.

List Other Contacts - List all "Other contacts", that is contacts that are not in a contact group. "Other contacts" are typically auto created contacts from interactions.

Search Other Contacts - Provides a list of contacts in the authenticated user's other contacts that matches the search query. The query matches on a contact's names, emailAddresses, and phoneNumbers fields that are from the OTHER_CONTACT source.

Requirements
To use this plugin, you'll need to get a Google Account, create a project for your client, and save your OAuth 2.0 Client ID and Client Secret.

Note: to use this API in a live app in production, you'll need to request approval from Google to use the required scopes.