How to use the api/2/workflow endpoints without workflow ids?

[wisznie]

As far as I can tell, workflows in JIRA have no ids, yet all the endpoints for working with workflows require an ID which doesn't exist. Are those endpoints simply not accessible? How do I use them or am I just out of luck if I want to use the REST api to do this? 

[Jan Eelco Hoekstra]

It is strange, but there is no way to get the workflow ID's over the rest API. Workflows do have an ID, it is only not shown on any /workflow or /workflow/search or whatever endpoint.
On server and DC, you can get these infors from the database itself, but if you need them on cloud, ask Atlassian support to supply you with a list of workflow names and their ID's from the database.

[mlassau_atlassian]

Well that's not going to work 

Please raise that as a bug

[Volodymyr Krupach @BrizoIT]

When you look from JIRA UI you can see the id but I wonder why it's not returned by the api/2/workflow.