Suppose I’m developing software that will do something related to the orders, positions, fund etc. Now while doing development like you we need some Sandbox version of your APIs so that we can simulate real market scenarios of how things working. This is kind of paper trading for API users.
Yes, noted this. We have an API playground which is for the same purpose, but will try to add a Sandbox version.
It won’t be possible to have real market scenario, as the same is not allowed as per regulations, but can have something to test for integration testing.