I am the original commenter you had replied to. I am actually working on https://tier.run https://tier.run in part to help create a clean separation of interes

I am the original commenter you had replied to. I am actually working on https://tier.run https://tier.run in part to help create a clean separation of interests between billing (and entitlement, and metering, and feature flagging) systems and how you store and access application and user data. With Tier we have `tier whois` [1] which lets you get the Stripe Customer ID based on your own userId. I'd love your feedback if you think there are improvements we could make. 1: https://www.tier.run/docs/cli/whois/ https://www.tier.run/docs/cli/whois/