Outsystems database direct access

any idea if I can get outsystems Db direct access with write permissions ? 

If you installed it on-premises, you configured the DB so you know the login information.

If you have an enterprise license installed in the cloud, you can ask for the login information.

If you are referring to Personal Environment, the best you can do is use DB Cleaner to remove unwanted data. Anything more than that you could mess with unwanted tables and complain about the product when it was your fault.

Most CRUD operations can be done in OS. Any particular case?