Firebase: Am I only allowed to use third party functions if I pay for a plan?

Question

I've been trying to get functions to work for the last few days, and I keep getting errors. In their CLI guides, they say that you can't make API calls to third parties if you're a free user, and I don't know if that also includes just 4 custom lines of code for a function in the index.js file

Answer 1

Waitting for answers