Seven structured sections in, one clean tagged prompt out - ready for any LLM.
Who should the AI be? A defined persona anchors expertise and perspective.
Background the AI can't guess: the situation, the audience, relevant facts.
The core instruction — what exactly should the AI produce? This is the only required field.
Rules and boundaries: what to avoid, limits to respect, non-negotiables.
Show, don't tell — a sample input and ideal output teach the AI your expectations.
The shape of the response: structure, syntax, length.
The voice of the response and who it's calibrated for.
Fill in the Task field and hit Generate — your prompt will look like this.
Start from a template
Click one to load and generate it — then swap the [BRACKETED] parts for your own.
The Discoveai Prompt Builder is a free online prompt generator that turns rough ideas into structured, professional AI prompts. You fill in up to seven guided sections — role, context, task, constraints, examples, output format, and tone — and it composes a clean, tagged prompt you can paste into ChatGPT, Claude, Gemini, or any other LLM. It runs entirely in your browser: no account, no API key, no data sent to a server.
A structured prompt separates who the AI should be, what it should do, and what rules it must follow into clearly delimited sections. XML tags like <role>, <task> and <constraints> act as unambiguous boundaries, so the model doesn't mix your examples into your instructions or overlook a rule buried in prose. Anthropic recommends XML-tagged prompts for Claude, and the same structure transfers well to ChatGPT and Gemini. Looking for ready-made prompts instead? Browse our prompt library or explore the best AI tools.
