Prompt writing, made clearer

The ultimate AI prompt maker.

Shape a rough idea into a thoughtful, ready-to-use prompt with the goal, context, and format spelled out.

Start with the outcome you want

Make context and constraints explicit

Copy a prompt ready for your AI tool

A quick look inside

From a loose thought to a clear prompt.

Give Promptloom a simple starting point. It helps turn that idea into instructions an AI can follow, with useful details and a format you can put to work.

Your starting idea

Plan a family trip

“Plan a relaxed Kyoto trip for my family.”

A short idea is enough. The generated prompt adds structure and useful detail.

A more useful prompt

Role
You are a thoughtful family travel planner with current knowledge of Kyoto.

Goal and context
Plan a relaxed Kyoto trip for a family. If trip length, dates, ages, budget, or starting location are not provided, state reasonable assumptions and clearly mark anything the family should confirm.

Plan
Suggest a balanced itinerary with cultural experiences, child-friendly activities, nearby local food, realistic travel time, breaks, and one rainy-day alternative. Group nearby places together and explain briefly why each day suits a family.

Format and checks
Organize the plan by day with morning, afternoon, and evening sections. Finish with practical tips and identify opening hours, prices, transit details, and booking requirements that should be verified before travel. Explain important choices in plain language and do not invent current facts.

Try this example This preview is an example. Click to open the studio and explore the complete prompt.

Why Promptloom

Better instructions make room for better answers.

A little structure can help an AI understand what you mean and what a useful result should look like.

Turn vague into specific

Clarify the goal, audience, and point of view so your request gives the model a real direction.

Keep the important details

Include constraints, tone, and context up front to reduce guesswork and make the output easier to use.

Reuse your prompt anywhere

Copy the finished text and take it to the AI assistant or workflow you already prefer.

How it works

Three steps from idea to ready.

STEP 01

Describe what you need

Write the task in your own words. Add who it is for, what matters, and any limits to respect.

STEP 02

Choose a model and generate

Select OpenAI, Claude, Gemini, Groq, DeepSeek, or Kimi. The model you choose turns your brief into clear instructions and a useful response format.

STEP 03

Copy and make it yours

Review the result, adjust your request if needed, and copy the prompt into the AI tool you want to use.

A few useful details

Frequently asked questions.

What does Promptloom do?

Promptloom helps shape a task description into a clearer, more complete prompt you can give to an AI assistant.

Which AI apps can I use?

Open the finished prompt in ChatGPT, Claude, Gemini, Copilot, Perplexity, DeepSeek, Groq Chat, Kimi, or Le Chat. Promptloom copies it first; paste it into the chat you choose.

Do I need an API key?

Yes, for prompt generation. Add the provider key to the local .env file when running locally, or to your Vercel project's environment variables when hosted. You can still try the built-in example without a key.

Can API usage cost money?

Gemini and Groq have free plans, but their paid account tiers can bill. OpenAI, Claude, DeepSeek, and Kimi API requests may also use paid credits or billing. Promptloom asks you to confirm the possible cost before every request.

Where does my brief and API key go?

When you generate a prompt, only the selected provider receives your brief. Keys stay server-side: in the ignored .env file for a local server, or in Vercel environment variables for a hosted site. They are never returned to the browser. Destination websites receive the finished prompt only if you paste it there.

Can I open Promptloom on my phone?

Yes. When Promptloom is deployed to Vercel, open its deployment URL on your phone; Vercel Deployment Protection may ask you to sign in. When using a local server, connect both devices to the same Wi-Fi, run npm run start:lan on the computer, then open the Wi-Fi address printed in the terminal. Opening the HTML file or using localhost on your phone will not connect to the computer's server.

Can I use the result with another AI tool?

Yes. Copy the finished prompt or choose one of the AI websites below it. Promptloom opens the site; you decide when to paste the prompt.

Bring an idea. Leave with a prompt.

Start with one task and make the next AI conversation more focused.

Open Prompt Studio

Promptloom · Prompt Studio

Create with AI

Describe your idea, choose OpenAI, Claude, Gemini, Groq, DeepSeek, or Kimi, and get a detailed prompt that explains what the AI should deliver.

Checking provider connection…

To use Promptloom on a phone, connect both devices to the same Wi-Fi, run npm run start:lan on this computer, then open the Wi-Fi address printed in its terminal on the phone.

Browse the Public APIs catalog

Search the community-maintained GitHub index and add an API listing to your brief. This catalog is metadata only: it does not provide live API data or issue API keys.

Search APIs Category

Open this section to load the catalog.

Source: Public APIs on GitHub. Each listed service has its own terms, availability, and authentication requirements.

Describe your idea0/10,000

A short idea or a full brief both work. Promptloom expands it into a detailed prompt with clear requirements and instructions to explain the answer.

Select model

Choose the AI model you want to use for this prompt.

Only the selected model provider receives your brief when you choose Generate.

✦　Detailed generated prompt

Your generated prompt will appear here…

Keep API keys private in outputs/.env

Add your provider key in the ignored .env file and restart this local server. Key values are never shown in this page.

GEMINI_API_KEY=your_gemini_key
GROQ_API_KEY=your_groq_key
OPENAI_API_KEY=your_openai_key
ANTHROPIC_API_KEY=your_anthropic_key
DEEPSEEK_API_KEY=your_deepseek_key
KIMI_API_KEY=your_kimi_key

Replace the example values in outputs/.env with your own keys, save the file, then restart npm start. The app reads keys on the server and sends a request only to the model you select.

Get an OpenAI key Get a Claude key Get a Gemini key Get a Groq key Get a DeepSeek key Get a Kimi key

Only the selected provider receives your brief when you generate a prompt. Prompt Studio asks you to confirm before every request that may use paid credits. Destination buttons copy the finished prompt and open an AI website; you decide whether to paste it there.