you can give this a try https://docs.airbyte.io/integrations for integrations it is open source, it will save you some effort on integration and you would be able to provide wider range of sources out of the box.
36 karma · joined May 19, 2011
However you make a good point. When commercial version is released i will make sure that source code is available for audit by purchaser for additional fees.
frontend:html,bulma css, cash js
deployment:terraform
what is issuers?you mean number of stocks/etfs?