My problem is to make use of an API along with Firebase Functions, the API in question is Coinbase, I use the API with node, if I test in the terminal with the node command
Firebase projects on the Spark plan can make only outbound requests to
Google APIs. Requests to third-party APIs fail with an error. For more
information about upgrading your project, see Pricing.
So you'll need to upgrade to a paid plan to use external APIs.