alleryStart learning →What does the system prompt do in a Claude call?
AIt runs once at the start; sets rules for the whole call
BIt overwrites every user message on the fly
CIt is sent with each user turn fresh
DIt is ignored if the user is talkative
Answer & Solution
Correct answer: A. It runs once at the start; sets rules for the whole call
The system prompt is read once at the start of a session and sets the role, tone, and rules Claude applies for the rest of the call.
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