How to generate user key and secret through api

How to generate user key and secret through api. Cause my system generate data based signal and user can place order to paytm. So I need user’s api and secret key.

You can refer below page for startup and individual
https://developer.paytmmoney.com/

For individual user, steps is given on this page

I need one api and secret key that allow any user to login to my platform and place trade to paytm money from my system

Your every user have to visit our Open API portal and create API. This will be one time task for them.

In your application keep a space where every individual user can give input as a API Key & API secret. After that you can create login URL ( https://login.paytmmoney.com/merchant-login?apiKey={user api_key} ) and ask user to login.