스승 · Seuseung

Your AI prompt master — lives inside Claude, ChatGPT & Gemini. Not just a rewrite. A lesson. Multilingual.

스승 (Seuseung) is the Korean word for a revered life mentor — deeper than teacher, closer to master. That's what this extension is. Unlike every other prompt tool, 스승 doesn't just rewrite your prompt. It teaches you WHY the improved version works — so you get better over time. ─── WHERE IT LIVES ─────────────────────────────────── 스승 is injected directly inside Claude, ChatGPT, and Gemini. No copy-paste. No switching tabs. Just type your prompt, click the floating 🎓 button, and the lesson slides in. ─── WHAT YOU GET ───────────────────────────────────── ✦ Prompt score — Clarity, Context, Specificity (1–10) ✦ Diagnosis — exactly what's weak about your prompt ✦ Improved version — optimized for your chosen AI ✦ 스승의 가르침 (The Master's Teaching) — named explanations of each change with the cognitive reason it works better ✦ Transferable principles — 3 lessons you can apply to every future prompt ─── PER-AI OPTIMIZATION ────────────────────────────── Claude → XML structure tags: <context><task><format> ChatGPT → Persona framing + numbered step-by-step Gemini → Clean section headers + structured format ─── MULTILINGUAL ───────────────────────────────────── Type in Korean, Spanish, Arabic, Japanese, Chinese, or English. 스승 detects your language and responds in kind. ─── FREE & PRO ──────────────────────────────────────── Free: 10 lessons per day · full features Pro: Unlimited · $4/month or $29/year ─── PRIVACY ─────────────────────────────────────────── Prompts are processed and never stored. No account required for free tier.