How to count subscribers of VK groups in batch?

Question

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There is a list of groups / public pages, you need to put down the number of subscribers next to them in automatic mode. What service / software (preferably free or for a nominal amount) is suitable? The function is simple, there is a complicated form in many SMM services, but I didn’t find the ability to upload a list and get a list with the number of subscribers anywhere.

Answer 1

https://vk.com/dev/groups.getMembers
In any convenient language, write the simplest parser:
1) get a token
2) upload a file with a list of groups, convert it to an array
3) collect the necessary information about each group in a loop
4) write to a report file