Can B2B custom price lists be updated via API for Bold Custom Pricing?

Is it possible to update custom price lists for the Bold Custom Pricing app via API instead of using a CSV file, specifically for a B2B context?

Yes, Custom Pricing does have an API that you can leverage to update your discounted product prices instead of relying on a .csv file.

You can find documentation on this API which we call the Price Rules API here: https://developer.boldcommerce.com/api/price-rules