Everyone seems to be missing the point. Using an LLM to perform book keeping like this is akin to a business in the dot-com era hiring a programmer to help them go online. But since it's an LLM, the next step would be different. The LLM might initially do all the actions itself, but eventually it should train optimised pathways just for this purpose. It would become an app that isn't actually written out in code. Or alternatively, the LLM might actually dump its optimized logic into a program that it runs as a tool.