Access Google spreadsheet API without auth token : <p>I have created Google Spreadsheet, and given edit access to all (can edit even without login).</p>

<p>Here is the <a href="https://docs.google.com/spreadsheets/d/1DKp_nAw37yppmAcfmVI7h340mC2kkI89EOHPGdxu620/edit#gid=0" rel="noreferrer">link</a>. I would like to update this sheet with Google Spreadsheet API. But I am getting error. My requirement is update the sheet thru API even without access credential.</p>

<p><a href="https://i.stack.imgur.com/7phCv.png" rel="noreferrer"><img src="https://i.stack.imgur.com/7phCv.png" alt="enter image description here"></a></p>
