Gemini Prompt Optimizer — AI skill for Claude Code


Prompt Master for Gemini — Prompt Optimizer Skill (Prompt Maxxing)

Turn a rough idea into a **production-ready prompt** for any AI tool. One clean, copy-paste prompt. No wasted tokens. No re-prompting.

**Prompt Master for Gemini** is an open-source **Agent Skill** for **Gemini CLI**, **Antigravity** and **Gemini Gems** that acts as a **prompt engineer / prompt optimizer / prompt generator**. It detects the target AI tool, extracts your real intent, fixes the common prompt mistakes, and returns a single optimized prompt, tuned for that exact tool.

**Keywords:** prompt master · prompt maxxing · prompt optimizer · prompt engineering · prompt generator · prompt improver · Gemini skill · Gemini CLI skill · Antigravity skill · Gemini Gem · SKILL.md · agent skills · ChatGPT prompts · Claude prompts · Midjourney prompts · Cursor prompts

**Works with (target tools):** Gemini, Claude, ChatGPT / GPT, Grok, DeepSeek, Qwen, Llama / Ollama, Cursor, Windsurf, Cline, GitHub Copilot, Claude Code, Codex, Antigravity, Bolt, v0, Lovable, Devin, Perplexity, Midjourney, DALL·E, Stable Diffusion, ComfyUI, Sora, Runway, ElevenLabs, Zapier, Make, n8n, and any tool you throw at it.

⚠️ Unofficial community project. Not affiliated with or endorsed by Google or Anthropic.

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🔥 The problem

Write a vague prompt → wrong output → re-prompt → closer → re-prompt → right answer on attempt 4.

That is 3 wasted calls. Multiply by 50 prompts a day.

**Prompt maxxing** means getting the right output on attempt one. The best prompt is not the longest, it is the one where every word is load-bearing.

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🚀 Installation

Option A — Gemini CLI (recommended)

gemini skills install https://github.com//prompt-master.git

Install for one project only:

gemini skills install https://github.com//prompt-master.git --scope workspace

Then, inside Gemini CLI:

/skills list