Oh, I was contemplating using billrun.

Ysean: we use an http bookkeper erlang module for topups, stripe for credit cards processing, and suretax for taxation... we use kazoo for ledgers (taxes, hardware, service charges, etc) then generate invoices from kazoo and run reports for taxation

Wow. That sounds a bit complex and cumbersome. What I like about the idea of billrun is that you can just utilize webhooks for end or start and end notifications, with the proper API formatting (I've been looking at using a custom script to act as a middleware to perform the data extraction from what Kazoo sends natively and the data and format that billrun uses.

fink, are you per minute, "flat rate" and pre or post pay?

Ysean: fixed cost user per month for internal/us/can/mex, then per min pre-paid for everything else

i guess you can write an amqp listener, utilize blackhole, or existing webhooks, transform the data, and then send it off to whatever billing platform