Hey Janko, you can configure KB to give short answers via system prompt, not in the description of tools, but in the system prompt. Tell it to get a small response.
I have also noticed you have a large number of files attached. You can try to create multiple knowledge bases by grouping the same kinds of files. Is it feasible? -
https://docs.vapi.ai/knowledge-base/using-query-tool#multiple-knowledge-bases
Best,
Sarthak Vaish