title: Executing Google Script without any authorization
body: <p>I would like to ask if it's possible to execute a Google Script on a Google Site without asking for permissions?</p>
  
  <ol>
  <li><p>Step of permission<img src="https://i.stack.imgur.com/4pqSw.png" alt=""></p></li>
  <li><p>Step of permission<img src="https://i.stack.imgur.com/rjCbD.png" alt=""></p></li>
  </ol>
  
  <p>The part of code that needs permission is this: </p>
  
  <pre><code>var sheet=SpreadsheetApp.openById("ID");
  </code></pre>
  
  <p>Is it possible to get access to a spreadsheet without asking for permissions?</p>
  
  <p>The script will only need read access to the spreadsheet and the spreadsheet is shared with everyone.</p>