I am currently exploring the capabilities of Zebee and I am in need of information regarding an API that allows the retrieval of process instances other than operate API
Hey @Anagha_K_J 
Zeebe currently features a gRPC API. There is no dedicated command to fetch all running process instances.
If you do not want to rely on Operate’s API you can store the process-instance IDs when running the create instance command. You should get them in return as far as I know. 
Hopefully this helps!
Best,
Thomas
@Hafflgav Thank You
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