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Free Claude prompt generator

Describe your task in one line and get a clear, structured prompt for Claude: a role, the context to fill in, the format you want and the rules to follow. Copy it, fill in the blanks and paste it into Claude.

It is free, instant and private. The prompt is built in your browser from PromptUp's library of tested prompts.

Try:summarise this report for my bosscover letter for a marketing jobexplain machine learning to a beginner

From one line to a full prompt

The same structure suits Claude: it follows clear roles, context and rules closely, so a complete prompt gets a complete answer.

You type

email to my manager asking for two days leave

You get

Act as an expert in clear, professional workplace communication.

Task: Email to my manager asking for two days leave.

Context:
- Recipient and my relationship with them: [WHO]
- The key facts to include: [DETAILS, DATES, NUMBERS]
- What I want them to do next: [ACTION]

Output format: A clear subject line, then the email in short paragraphs. Give 2 versions: one formal and one friendly.

Rules: Polite, confident and warm. Under 150 words. No robotic clichés like "I hope this email finds you well".

Before you start, ask me up to 3 short questions if any important detail is missing. Otherwise, go straight to the answer.

Try this example Open Claude

How the Claude prompt generator works

  1. Type your idea in your own words, the way you would say it.
  2. PromptUp picks the mode (photo edit, image, video or text) and builds the prompt from its library of 1,611 tested prompts and a set of rules.
  3. Fill in the [BRACKETED] parts with your own details, then copy the prompt.
  4. Paste it into Claude and run it. Use "New variation" for a different wording.

Nothing is sent to a server. The generator runs entirely in your browser, so it is instant and private.

What makes a Claude prompt work

  • Be direct about the task. Claude does what the prompt says. State the job, the audience and the outcome plainly instead of hinting.
  • Separate the material from the instructions. Paste a document or notes under a clear label such as "Document:" so Claude does not mix it up with what you are asking.
  • Explain why. A reason ("this goes to a senior client") helps Claude choose tone and detail better than a rule alone.
  • Show the format. If you want bullets, a table or a certain length, say so, or paste a short example of the style you like.
  • Iterate in the same chat. Reply with "shorter", "more formal" or "add a closing line". Claude keeps the context, so small follow-ups beat rewriting the whole prompt.
Ready-made

Or start from a finished Claude prompt

See all Claude prompts →
Example result: Learn any topic through quiz questions Text & chat2 blanks to fillLearn any topic through quiz questionsChatGPT · Gemini · Claude Example result: Proofread without changing your voice Text & chat1 blank to fillProofread without changing your voiceChatGPT · Gemini · Claude Example result: Rewrite an angry email (firm but calm) Text & chat3 blanks to fillRewrite an angry email (firm but calm)ChatGPT · Gemini · Claude Example result: Prepare for a difficult conversation Text & chat4 blanks to fillPrepare for a difficult conversationChatGPT · Gemini · Claude Example result: Help me make a decision Text & chat4 blanks to fillHelp me make a decisionChatGPT · Gemini · Claude Example result: Scroll-stopping Reel / Shorts script with a hookTrending Text & chat3 blanks to fillScroll-stopping Reel / Shorts script with a hookChatGPT · Gemini · Claude Example result: Turn meeting notes into minutes Text & chat4 blanks to fillTurn meeting notes into minutesChatGPT · Gemini · Claude Example result: Write a weekly status report for your manager Text & chat5 blanks to fillWrite a weekly status report for your managerChatGPT · Gemini · Claude
FAQ

Questions, answered

Is this Claude prompt generator free?

Yes. It is free, has no sign-up and no limit. You need access to Claude to run the prompt.

Is it made by Anthropic?

No. PromptUp is an independent site and is not affiliated with Anthropic. The prompts follow general prompting practice and work well in Claude.

Can I use it for coding prompts?

The generator is built for writing, study and work tasks. For coding agents, see the Claude Code prompts page, which has briefs and CLAUDE.md templates.

What does the generated prompt contain?

A role, the task, a short context block with [BRACKETED] fields for your details, the output format, rules for tone and length, and an instruction to ask if anything important is missing.

Does my idea leave my browser?

No. Everything runs on your device and PromptUp never sees what you type.

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Type one line and get the full prompt in a second.

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