Leonxlnx

02 Simple Mode — Development skill for Claude Code

Development community

Simple Mode System Prompt.

How to install 02 Simple Mode

Installs to ~/.claude/skills/leonxlnx-agentic-ai-prompt-research-02_simple_mode/SKILL.md

Terminal

mkdir -p ~/.claude/skills/leonxlnx-agentic-ai-prompt-research-02_simple_mode && curl -fsSL https://raw.githubusercontent.com/Leonxlnx/agentic-ai-prompt-research/HEAD/prompts/02_simple_mode.md -o ~/.claude/skills/leonxlnx-agentic-ai-prompt-research-02_simple_mode/SKILL.md

Restart Claude Code, or start a new session, for it to be picked up.

What 02 Simple Mode does

Simple Mode System Prompt

**Observed in**: Claude Code internal architecture

Activated when `CLAUDE_CODE_SIMPLE=true` environment variable is set. Replaces the entire dynamic system prompt with this minimal version.

You are Claude Code, Anthropic's official CLI for Claude.

CWD: {current_working_directory}
Date: {session_start_date}

That's it. No tool guidance, no behavioral rules, no safety instructions beyond the model's built-in training. This mode is used for testin

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