Camunda 8 API without Identity Local Setup

I am using a manual setup in my laptop. Where i downloaded elastic search, and Camunda Task, zeebe and operator from Camunda release page. I unzip the archives and run the bat file from the bin folder. All development and debugging is working fine. Now i am trying to test the APIs from POST man. I am getting a 404 error.
for example
post Method - http://localhost:8080/v1/process-instances/search - its returning me 404 error. How to enable this for local setup?