Create a new GraphQL API
Create an example spreadsheet
Using this method, you will be redirected to your google account to give GraphQLsheet permission to create a new spreadsheet. GraphQLsheet will have access to this file only. If you change the first row of the spreadsheet (e.g. by pasting your data) please remember to re-create the API through the dashboard.
Please paste the Google Spreadsheet URL below e.g.
https://docs.google.com/spreadsheets/.../edit
Using this method, you will be redirected to your google account to give GraphQLsheet permission to view/edit all your spreadsheet files to be able to access that specific spreadsheet.