post https://sandbox.cashfree.com/pg/orders/pay/authenticate/
If you accept OTP on your own page, you can use the below API to send OTP to Cashfree.
Sandbox and Production End Point
Sandbox End Point - https://sandbox.cashfree.com/pg
Make sure you generate credentials in the test dashboard.Production End Point - https://api.cashfree.com/pg
To process live payments, make sure you use credentials from the live dashboard. Do not share your secret key with anyone.Partner Authentication for API calls - More details available here.