What is System prompt?
The short answer
A system prompt is the standing instruction that sets an AI's role, rules and style for a whole conversation, before any user message.
System prompt, explained
Coding tools use project instruction files the same way, so every session starts knowing the codebase's conventions.
Questions people ask about System prompt
What is System prompt?
A system prompt is the standing instruction that sets an AI's role, rules and style for a whole conversation, before any user message.
Related terms
A prompt is the instruction you give an AI model: the request, the context and any constraints that shape what it produces.
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Vibe codingVibe coding is building software by describing what you want to an AI in plain language and iterating on what it produces, rather than writing the code line by line yourself.
AI website builderAn AI website builder generates a website from a description: it writes the copy, picks a layout and design and often publishes the result for you.
Part of the Web Encyclopedia by Apex Flow Digital. Definitions are general knowledge, kept current, with no invented statistics.