>having the agent able to respond to agent calls looking for relevant info be able to actually find them is the thing that agentic tools don't have
I disagree. That's what my Jamie endpoint does exactly. I also have other harnesses for personal agents that are quite good at this. Embeddings are the natural primitive for this. It is not ideal or fully optimized but you can't say they don't find relevant information. They frequently do if you configure them properly.