CalvinTTooS

Prompt Optimizer — Development skill for Claude Code

Development community

Optimize prompts for Claude & Gemini with local, privacy-first PII anonymization: a Windows/Tauri desktop app that generates 5 variants + CLAUDE.md/GEMINI.md scaffolds.

How to install Prompt Optimizer

This entry records only its repository, not the path inside it, so there is no exact command to give. Open CalvinTTooS/prompt-optimizer and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Prompt Optimizer does

Optimize prompts for Claude & Gemini with local, privacy-first PII anonymization: a Windows/Tauri desktop app that generates 5 variants + CLAUDE.md/GEMINI.md scaffolds. Gemini engine via your local API key, no backend.

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README

Prompt Optimizer

**English** · [Italiano](README.it.md)

Prompt Optimizer is born from a simple idea: **help you write good prompts.** To do that it leans on Google **Gemini's free API tier** — and precisely *because* your prompt is sent to Gemini, it **anonymizes the sensitive data Gemini receives**: PII (emails, phone numbers, cards) is detected and masked **on your device** before the call, then restored in the output. Better prompts, without handing your personal data to the model.

Desktop app (Windows, via **Tauri**) — no backend of its own: everything runs client-side in the Tauri webview, with your API keys stored only on your device.

![Prompt Optimizer — main screen](docs/manual-img/04.png)

![Windows 10/11](https://img.shields.io/badge/Windows-10%2F11-0078D6?logo=windows&logoColor=white) [![Release](https://img.shields.io/github/v/release/CalvinTTooS/prompt-optimizer)](https://github.com/CalvinTTooS/prompt-optimizer/releases/latest) ![Downloads](https://img.shields.io/github/downloads/CalvinTTooS/prompt-optimizer/total) [![License: MIT](https://img.shields.io/github/license/CalvinTTooS/prompt-optimizer)](LICENSE)

🤖 Developed with AI assistance, under strict versioned development standards — see [Development](#development).

Download

Grab the latest build from the **[Releases](https://github.com/CalvinTTooS/prompt-optimizer/releases/latest)** page:

Installer (recommended): Prompt.optimizer_x.y.z_x64-setup.exe — installs into your user profile, no admin rights required.
Portable: pop_app.exe — a single executable to copy and run (requires WebView2, usually already present on Windows 10/11).

⚠️ The app is unsigned: on first launch Windows **SmartScreen** may warn you → *"More info" → "Run anyway"*. Full guide: [user manual (EN)](docs/user-manual.md) · [manuale utente (IT)](docs/manuale-utente.md).