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  • 🤯 This Full System Prompt Made Claude Finally 'Click' for Us (Bonus ELI5 Setup + 3 Skills)

🤯 This Full System Prompt Made Claude Finally 'Click' for Us (Bonus ELI5 Setup + 3 Skills)

If Opus keeps giving you answers that feel too technical, copy and paste this into your system prompt. Follow the ELI5 configuration as well, it won't make you disappointed.

Author

Robin Do
August 25, 2026

TL;DR

A clearer Claude system prompt fixes Claude’s jargon problem by changing how Claude speaks by default. Long answers should be shortened with skills, not forced through the main prompt.

Opus can be technically correct and still hard to use. The main issue is that it often answers normal questions with acronyms, expert terms, and too much text, especially inside Claude Code.

This guide shows how to set an ELI5 output style, add ASD-STE100 for cleaner language, and use skills like /bro, wait, what?, and /quick N when an answer gets too long.

Key points

  • One important fact: Output style is stronger than CLAUDE.md for communication rules.

  • One common mistake: Do not tell Claude to always be short.

  • One practical takeaway: Use your Claude system prompt for clarity, then use skills for length.

Should Claude be short by default?

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Introduction

Claude Opus (especially Opus 5) has a frustrating problem right now. Its replies are too long, too technical, and often buried under jargon nobody asked for.

Luckily, Anthropic already showed how to fix it. The setup is ridiculously simple.

→ The setup takes minutes, makes Claude easier to understand, and can even cut wasted context and token usage.

And at the end, I’ll give you a ready-to-use resource that handles the whole setup automatically. You can send it straight to Claude and let it do the work for you.

Let’s start!

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