Built for developers, automation builders, and AI power users

From “um…”
to the perfect prompt.

Umprompt turns rough ideas into execution-ready prompts for Claude, Cursor, and ChatGPT — scored, optimized, and saved to your workspace.

Free to start · No credit card · Works with Cursor, Claude, ChatGPT

umprompt.app/builder
Idea
Build a Next.js auth flow with Supabase magic links and protected routes
Target tool
Claude
Cursor
GPT
Generate prompt
Generated for Claude
<role>
You are a senior full-stack engineer specializing in
Next.js 15 and Supabase auth.
</role>
<task>
Implement magic-link auth with route protection
via middleware and a callback handler.
</task>
<constraints>
- Do not use NextAuth
- No tokens in localStorage
Prompt Score
87/ 100
Clarity92
Context88
Constraints84
Format90
Tool fit89
Strong
Tuned for the tools you actually use
CursorClaudeChatGPTMidjourneyVeon8nAirtableSupabase
Launching with Cursor, Claude, ChatGPT — more soon.
What it does

A workspace built around how AI tools actually work.

Generic prompt generators give you generic output. Umprompt is tuned per-tool, scored on real quality dimensions, and iterates until the prompt performs.

Tool-tuned generation

Cursor wants file paths and step-by-step instructions. Claude wants XML tags and explicit success criteria. ChatGPT wants persona and few-shot examples. Umprompt knows the difference — and structures the output accordingly.

Six-dimension score

Every prompt is rated on Clarity, Context, Constraints, Examples, Output Format, and Tool Fit — each 0 to 100. Each dimension comes with one concrete, actionable tip you can apply immediately.

One-click optimization

Click "Optimize weak dimensions" and Umprompt rewrites the prompt targeting every low-scoring area using the exact tips from your score. A before → after comparison confirms the improvement.

How it works

From idea to a prompt that actually performs.

1

Describe your goal

Type what you want to build, write, or generate in plain language. Add optional context — audience, constraints, output format — to sharpen the result.

2

Pick your tool

Choose Cursor, Claude, or ChatGPT. Umprompt knows what each tool responds to best and structures the prompt accordingly — XML tags for Claude, step-by-step for Cursor, persona-first for ChatGPT.

3

Generate & score

Get a full prompt in seconds, immediately scored across six dimensions: Clarity, Context, Constraints, Examples, Output Format, and Tool Fit. Each dimension includes an actionable tip.

4

Optimize & save

Click "Optimize weak dimensions" to automatically rewrite the prompt targeting every low-scoring area. Then save it to your workspace — reopen and iterate anytime.

Use cases

What people build with Umprompt.

Cursor

Build a SaaS client portal

Generate a step-by-step Cursor prompt that names the right files, specifies the tech stack, sets acceptance criteria, and lists what not to break.

Build a client portal with a dashboard, document uploads, and invoice history in Next.js and Supabase

Example idea typed into Umprompt

Claude

Deep competitor research

Write a structured Claude prompt that frames the analysis role, scopes the research dimensions, and specifies the output format — ready to paste and run.

Analyze the top 5 competitors in the AI writing tools space — pricing, positioning, strengths, and gaps

Example idea typed into Umprompt

ChatGPT

Cold email campaign

Create a ChatGPT prompt with the right persona, explicit tone guidance, example emails, and a clear deliverable — a full sequence, not a single message.

Write a 3-email cold outreach sequence targeting early-stage SaaS founders for a dev tools product

Example idea typed into Umprompt

Stop wrestling with prompts. Ship work.

Free to start. Built for the people who actually use AI to get things done.

Open Umprompt