Should I get all the workers None
Then go through them and count how many is in my queue of interest ?

Hi @<1576381444509405184:profile|ManiacalLizard2> , you can use the API client to query the queues - None

I saw that page ... but nothing about number of worker of a queue .... or did I miss it ?

or which worker is in a queue ...

It is returned in queues.get_all. I'd suggest navigating to the webUI and checking what the webUI is sending to the server (It's all API calls) and replicating that in code with the APIClient

got it

Thanks @<1523701070390366208:profile|CostlyOstrich36>