Google Assistant is aware of your Chipolos inside the Find My Device app by default. You simply have to make sure that you have the necessary settings enabled and check the usage section below.
Prerequisites
There are two prerequisites before you can use your Chipolos with the Google Assistant:
Usage
The examples below are for a Chipolo named "Keys".
"Hey Google, find my Keys"
to get the last known location of your Keys.
"Hey Google, ring my Keys"
to make your Google Home or other nearby devices ring your Keys.
"Hey Google, stop ringing my Keys" or "Hey Google, I found my Keys"
to make your Google Home or other nearby devices stop ringing your Keys.