Hello Josh,
not totally sure what you are exactly looking for.
Do you want to know, where to set this up in BC?
Search for Shipping Agent and you can see all existing one:

If you click on "related" -> Line -> Shipping Agent Services

You can see/add services for this shipping agent:

Or are you looking for a way to automaticcally create/fill those Shipping Agents or Services?
This is not possible.
You have to find these information by yourself and than create a new Agent with its services manually.
https://docs.microsoft.com/en-us/dynamics365/business-central/sales-how-to-set-up-shipping-agents
Let me know, if this is ansering your question.