Prompt Expander · Free member app
Rough idea in. Clear prompt out.
The Prompt Expander turns a one-line idea into a structured Markdown prompt for your AI tool, with every guess it made labeled so you stay in control.
Watch it work
What it does
How it works, step by step.
- Type your ideaWrite it the way you would say it out loud. One line is enough.
- Answer a few questions if it asksWhen something important is missing, it asks a short round of questions instead of guessing.
- Read the structured promptYou get clear sections such as Task and Audience, plus an Assumptions list you can edit or delete.
- Use it in your AI toolTake the finished prompt to Claude, GPT, Gemini or whichever AI you like.
What you get and who it is for
Anyone who knows what they want from an AI tool but not how to ask for it.
No padding
It does not stuff your prompt with filler. If your prompt is already good, it comes back nearly unchanged.
Guesses are labeled
Every assumption is listed so you can correct it before you use the prompt.
Your history
Past prompts are kept in the app so you can come back to them.
Free, and what costs credits
- Without signing in
- Three free tries.
- Free members
- Run it on your daily eBiz123s AI allowance. Joining is free.
- After the allowance
- It continues on eBiz Credits.
Straight answers
Do I need an account?
Not for your first three tries. After that, a free member account gives you a daily AI allowance.
Which AI tools can I use the prompt in?
Any of them. The output is plain Markdown text, written to work well in Claude, GPT and Gemini.
What if my prompt is already good?
Then it comes back nearly unchanged. The tool is built not to add padding.
What are the assumptions for?
They show where the tool guessed. Edit or delete any that are wrong before you use the prompt.