The File system utility app provides a single action to create a temporary file on the server:
Specify the text content to write into the file and provide an optional file name:
If no file name is specified the action will generate a random file name.
The action emits a URL to the temporary file, which can be used by other actions.
An example usage is to use this for emailing an attachment with textual content in the attachment being generated by the automation.
The system periodically purges all temporary files depending on its configuration, generally no faster than once a day.