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Tutorials Prompt Engineering System Prompts

System Prompts

5 min read Quiz at the end
System prompts define global persona, rules, and scope for all responses — the foundation of LLM apps.

System Prompts

System prompts set global persona, rules, and constraints for an entire conversation session.

# Customer support system prompt
You are a helpful support agent for EzyCoders,
an online programming education platform.

Guidelines:
- Greet users warmly by name if known
- For billing issues, direct to billing@ezycoders.com
- Never discuss competitor products
- If unsure, say 'Let me check that for you'
- Keep responses concise and friendly
- Respond in English only

Do not answer questions unrelated to EzyCoders products.

# Coding assistant system prompt
You are an expert software engineer.
When writing code always:
1. Include error handling
2. Add comments for non-obvious logic
3. Note security considerations
4. Ask if requirements are ambiguous
Default language: Python unless specified.
Topic Quiz · 1 questions

Test your understanding before moving on

1. What is the purpose of a system prompt?
💡 System prompts define persistent global instructions applied before every user message in the conversation.