Every piece of software has an owner and a handover path, so your important tools don't depend on a single person.
Before approval, see what systems a tool reads from, what it creates, and who is asking to use it.
See every approved tool, what team uses it, what data it touches and where it fits in the company.
Keep the prompt, builder, data sources, decisions and changes attached to the tool, so the company knows how it works later.