Hi @Hari ,
Graph API provide the POST https://graph.microsoft.com/v1.0/me/todo/lists/AQMkADAwATM0MDAAMS0yMDkyLWVjMzYtM/tasks
endpoint for create task, and
Here is the documentation about creating Task by Graph API for your reference.
If you're using the Microsoft Graph API for the first time,
Note that you must first create your app in the AD portal and add permissions to it, and then obtain a token through authentication to use the Graph API.
Here is the documentation instructions on how to do authentication. Hope it can help you.
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