Creating a Living Knowledge Base for Context Aware AI Agents

I'm trying to create a context aware agent by providing it a text knowledge base. crrently it is referencing an external knowledgebase which outputs the information back to the AI assistant. I noticed there are knoweldge base skills i can give the ai agent though. Will that tool update the knowledge base referenced on google docs or is it better practice to paste the text knowledge base into the agents prompt etc? How can i create a living knowledge base which is updated actively by the outreach agent?