In order to use the APIs available with Upstox, you need to create an App in the Apps section inside the Accounts tab of Upstox Pro app or web. Head over to http://account.upstox.com/developer/apps to access the same.
When you are ready to create an app you can generate your API key and API secret.
You, the developer—are allowed to select a redirect URL which will be called after the login flow. Here’s a step-by-step guide [https://upstox.com/developer/api-documentation/#section/Introduction] to use the Upstox API using the App Console.