When should an agent call tools versus answer directly?
PICTURE THIS: RAG CHATBOT
Simple meaning
Tools for fresh data, actions, and precise math
WHY — Agents instead of guessing?
Why interviewers care about Agents:
contrast on Agents, not two memorised paragraphs.
the developer, then one case where picking wrong hurts.
Name the idea, why it exists, then one short example.
End with when you use it and one common pitfall.
STEPS — What happens step by step?
Before you speak the answer, walk the interviewer through these steps:
- 1Tools for fresh data,
actions, and precise math
- 2direct answers for known
static knowledge.
- 3Too many tool calls
add latency and failure points.
- 4Close with when you
would choose this approach on a real task.
- 5Common mistake
What juniors usually get wrong.
- 6Close
When you pick this over the alternative.
EXAMPLE — See it in action
Here's a short line you can speak, broken into clear beats:
Note: Adapt this scaffold to your own project — keep it under 60–90 seconds.
Key takeaway
Tools for fresh data, actions, and precise math direct answers for known static knowledge.