How to use APIs using token and parameters appropriately.

Hi. This is Andrew.

I'm trying to use APIs that are from other system. And requirements are like below.

1. Need to refresh token by calling token API everytime I call data API. And new token will be used to call data API.

2. data API gives me sliced data by 50 rows or 500 rows. But entire rows are about 300,000.

This means I have to call data API repeatedly using offset parameter.

How can I handle this matters?

Thanks.