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Guide · Open source

How to use prompt-master: install the Claude skill and write better prompts

Updated · written with AI from the project's own documentation and checked against our catalogue data

Prompt Master is an open-source skill for Claude that takes a rough request and rewrites it as a more precise prompt for a target AI tool, such as Claude Code, Midjourney or Cursor. It is aimed at people who often re-prompt AI tools several times before getting a usable result. This guide shows how to install it, how to invoke it, and what its output looks like so you can judge whether it fits your work.

Prompt Masternidhinjs/prompt-master · ★ 15.4k · MIT

Quick start

  1. 1Check prerequisites. Confirm you have a Claude.ai account with access to Skills, or Claude Code.
  2. 2Download the repository. Get the nidhinjs/prompt-master repository as a ZIP from GitHub, or clone it for Claude Code.
  3. 3Upload the skill in Claude.ai. Go to Sidebar → Customize → Skills → Upload a Skill and add the downloaded skill.
  4. 4Or clone into Claude Code. Run the mkdir and git clone commands to place the skill in ~/.claude/skills/prompt-master.
  5. 5Describe your task. Name the target tool and describe the job in plain language, or start with /prompt-master.
  6. 6Answer clarifying questions. If the skill asks up to three questions, answer them so the prompt has the details it needs.
  7. 7Copy and use the prompt. Paste the delivered prompt block into your target tool and check the output.

What you need before you install Prompt Master

Prompt Master is a skill loaded into Claude, so you need one of the two setups the README names: a Claude.ai account with access to Skills, or Claude Code. The project is licensed under MIT.

  • A Claude.ai account with access to Skills, or
  • Claude Code installed

Install Prompt Master on Claude.ai (recommended)

The README's recommended route is the browser version of Claude. Download the repository as a ZIP from GitHub, then upload it as a skill.

  • Download this repo as a ZIP from the GitHub page.
  • In claude.ai, go to Sidebar → Customize → Skills → Upload a Skill.

Install Prompt Master into Claude Code (not suggested by the README)

The README offers a cloning route for Claude Code but marks it as not suggested. If you still want it, create the skills directory and clone the repository into it. The folder name at the end of the path, prompt-master, is the name the skill is loaded under.

mkdir -p ~/.claude/skills git clone https://github.com/nidhinjs/prompt-master.git ~/.claude/skills/prompt-master

Ask Prompt Master for a prompt

You can invoke the skill in plain language, or call it explicitly with /prompt-master. Name the target tool in your request so the skill can pick the right approach. Describe the task as you would to a colleague; the skill will ask up to three clarifying questions if key details are missing.

  • Natural: ask Claude to write a prompt for a specific tool, for example Cursor or Midjourney.
  • Explicit: start with /prompt-master, then describe what you want built or generated.
  • Fix an existing prompt: paste a prompt that gave poor results and ask for a fix.
Write me a prompt for Cursor to refactor my auth module

Understand what Prompt Master does with your request

According to the README, the skill runs a fixed pipeline on each request. It detects the target tool, extracts nine dimensions of intent (task, input, output, constraints, context, audience, memory, success criteria and examples), and asks at most three targeted questions when critical information is missing. It then applies techniques such as role assignment, few-shot examples and XML structure where they help, checks model names against official provider docs when a request depends on 'latest', and strips words that do not change the output.

The result is delivered as one copyable prompt with a one-line strategy note. The framework choice is applied automatically and is not shown to you.

Read the example outputs

The README includes two worked examples. In the first, a request for a realistic samurai in the rain produced a Midjourney prompt with comma-separated descriptors, a 16:9 aspect ratio, a version flag and a negative prompt. In the second, a request for a Notion-style landing page produced a Claude Code brief with exact hex colours, spacing, section order, animation timing and explicit 'done when' criteria.

These examples show the output style. The README does not measure how often the output is better than a plain prompt, so treat them as illustrations rather than benchmarks.

What people use it for

  • Writing a detailed build brief for Claude Code, such as a landing page with defined sections and styles.
  • Creating tool-specific image prompts for Midjourney, with aspect ratio and negative prompt included.
  • Rewriting a bad prompt for another model, such as adapting a prompt for Stable Diffusion.
  • Drafting instructions for coding agents like Cursor or Codex with scope and verification stated.

Frequently asked questions

Is Prompt Master free?

The repository is licensed under MIT, which is an open-source licence. The README does not mention prices, and you still need access to Claude through a Claude.ai account with Skills or through Claude Code.

What do I need to run Prompt Master?

The README lists a Claude.ai account with access to Skills, or Claude Code. It is a skill for Claude, so it does not run as a standalone app or API.

How do I install Prompt Master in Claude Code?

The README gives a clone command that places the repository in ~/.claude/skills/prompt-master. The README marks this route as not suggested, and recommends the Claude.ai upload method instead.

Does Prompt Master work with ChatGPT, Midjourney or Cursor?

The README says it works with a long list of tools, including ChatGPT, Cursor, Midjourney, Stable Diffusion and Sora. It writes prompts for those tools; the skill itself runs inside Claude.

Will Prompt Master guarantee better results?

No. The README shows examples but no measured results, so it does not promise fewer re-prompts. Test it on your own tasks before relying on it.

What are the alternatives to Prompt Master?

The source does not list comparable projects, so this guide cannot name specific alternatives or compare them. You can write prompts by hand or use a general-purpose assistant and iterate.

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Our verdict

Prompt Master suits people who use Claude and regularly need precise prompts for coding agents or image and video tools. If you do not use Claude, or you want a standalone app or API, it is not the right fit. Because the README offers examples rather than measured results, try it on a few of your own tasks before deciding it saves you time.

Install options & downloads