Hello @wwinfried5p ,
I talked with our engineers and said that a Google sheet token is created when adding a new data source to make the blocks work.
To make the web api blocks you would need to get the access token using a block.
Similar to what we have for Airtable: Airtable’s API keys will be deprecated by Airtable - Announcements - Community (thunkable.com)
Unfortunately, this feature is not available, at the moment, but it is a good suggestion!
I passed it on to the team.