Found it, here the solution for documentation :
function tryout_notion () { const url = "https://api.notion.com/v1/pages"; var payload = { "parent": { "type": "database_id", "database_id": "*****" }, "properties": { "Name": { "title": [ { "text": { "content": "CREATE NEW LINE IN NOTION" } } ] } } } var options = { 'muteHttpExceptions': true, "method" : "post", "headers": { Authorization: `Bearer secret_*****`, "Content-Type": "application/json", "Notion-Version": "2021-05-13", }, "payload": JSON.stringify(payload) }; const response = UrlFetchApp.fetch(url, options); Logger.log(response); }