What is System Prompt?
A set of instructions given to an AI before the conversation starts. It tells the AI how to behave for the entire session.
route set before departure · 4 of 4 stops on route
What does a system prompt do?
Answer it in your own words in the app.
In real work
System prompt: You are a senior iOS engineer. Use Swift 6 and SwiftUI. Never suggest UIKit solutions.
In the illustration
The switch lever is thrown before the train leaves; the train then runs the whole loop on that route and every stop it reaches follows from the setting.
Write a system prompt for the support assistant in your model: tone, the three things it must never promise, and the format of every reply. Keep it under 200 words.
Try it now
The fastest way to learn a word is to use it. Open this line in the agent you already work in and watch what it does. Change the tool to the one you use.
Go further
01Practice
Make it stick
One term a day, a short quiz, and sentence practice that checks your own words.
02Verify
Prove you know it
Pass the quiz and keep it in a Skills Wallet you can share with anyone who needs proof.
03Career
Find the work that uses it
See which roles lean on this vocabulary, and what they pay in year one.
Learn the next term tomorrow.
Google gives a definition. Prompthaus pairs each term with how it shows up in standups, PRs, prompts, and design reviews. Then it quizzes you until the word sticks. One term a day on iPhone.
