Tutorials Prompt Engineering Tutorial
System Prompts — Complete Guide
System Prompts — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of Prompt Engineering Tutorial on Toolliyo Academy.
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Prompt Engineering Tutorial · Lesson 6 of 100
System Prompts
Prompts → Apps
Prompts · 1 — Basics · ~6 min · Module 1: Prompt Engineering Foundations
What is this?
The system prompt is the standing instruction layer: role, tone, safety rules, and output shape. It applies to every turn until you change it.
Why should you care?
PromptVerse stores per-tenant system prompts for chatbot, copilot, and agent modes so brand voice stays consistent.
See it live — copy this example
Copy the prompt into ChatGPT, Claude, or your LLM API playground and compare outputs.
const systemPrompt = `
You are PromptVerse Copilot for Acme SaaS.
Tone: concise, no hype.
Rules:
- Never reveal API keys or internal URLs
- Cite doc slugs when using retrieved text
- Format code in fenced blocks
`;What happened?
- This string loads once per session.
- User messages sit below it.
- Tenant-specific rules live here — not repeated in every user turn.
Practice next
- Draft a system prompt for your dream product.
- Include 3 must-not-do rules.
- Test one user question in an API playground.
- Add a locale: "Use Indian English."
- Remove citation rule and test RAG answers.
Remember
System = persistent behavior contract. Keep stable rules here. Update via config, not hard-coded user hacks.
Tenant onboarding
New customer uploads brand guidelines.
Outcome: Guidelines merge into system prompt template in PromptVerse admin.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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