Is the Prompt Master skill free?

Yes. The skill itself is free from nidhinjs/prompt-master. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Prompt Master SkillProof Score?

8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 4/5.

How do I install Prompt Master?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Prompt Master with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Prompt Master

Turns a rough idea into a single, ready-to-paste prompt tuned for a specific AI tool.

by nidhinjs · nidhinjs/prompt-master

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 8.8/10
Tested: Jul 10, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · 85225a6

For a token-refresh bug fix, it enforced a strict file+function+do-not-touch+stop-condition format instead of a generic prompt; docked a point for the README's unverifiable 'zero tokens wasted' claim.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 8/10
Docs & honesty 4/5

What Prompt Master does

Rewrites a rough idea into one production-ready prompt tailored to a named AI tool — Claude, GPT-5.x/o3, Gemini, Cursor, Claude Code, Midjourney, ComfyUI, Zapier, and 20+ others each get their own tool-specific formatting rules and failure-pattern checklist. Activates only when the user explicitly asks to write, fix, improve, or adapt a prompt for a specific tool, and explicitly stays out of the way for ordinary coding or writing requests. Includes a diagnostic checklist for common prompt failures and reference templates for less-common tool categories, loaded on demand.

How to install Prompt Master

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

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Prompt Master

/prompt-master Turns a rough idea into a single, ready-to-paste prompt tuned for a specific AI tool.

It also activates on plain-language prompts like these:

Rewrite this rough idea into a production-ready prompt for Midjourney
Fix this prompt so it works better with Claude Code
Adapt my prompt into a Gemini-specific format with proper structure

Frequently asked questions

Is the Prompt Master skill free?: Yes. The skill itself is free from nidhinjs/prompt-master. SkillProof publishes the install command and an independent test verdict at no cost.
Does Prompt Master work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 10, 2026. Verdict: Tested · Works. For a token-refresh bug fix, it enforced a strict file+function+do-not-touch+stop-condition format instead of a generic prompt; docked a point for the README's unverifiable 'zero tokens wasted' claim.
What is the Prompt Master SkillProof Score?: 8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 4/5.
How do I install Prompt Master?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Prompt Master with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.