A good brief is not a long paragraph. A good brief is a list of decisions that makes it impossible for the AI agent to invent things.
Use this pattern before opening the /ai guide:
What output · what data exists · what viewport · which pairing · what counts as done
Fix the output and format first
Write the output type and format in one line. Example: "landing page website, single HTML page, desktop viewport 1440px".
A good agent stops when the format is unclear. The rule lives in the agent flow: ask first, then design.
Attach real data, never placeholders
The mandatory list:
- Real brand, product, and price names
- One proof number (users, duration, location)
- One primary action that can be clicked
Without these three, the agent fills gaps with generic text. That is the definition of AI slop.
Lock the viewport before picking a style
Websites, PDFs, carousels, and posters follow different size rules. Pick first from the viewport rules — for example 1080×1080 carousel or A4 print page.
An English prompt you can copy to any agent:
Create a landing page website about architecture studio portfolio,
desktop viewport 1440px, following lamandesain.com/ai.
Ask for missing data before coding.
Ask for three pairings, lock one
Never accept default colors or fonts. Ask the agent to propose at most three different font and color pairings, each with its reason.
Once the user picks, the pairing is locked until the output ships.
Close with checkable pass criteria
End every brief with a test sentence: "Every six-axis score at least 4, otherwise revise before shipping."
This five-line brief turns agents from guessers into checkers.