Claude Code System Prompts

Skill by ara.so — Claude Code Skills collection.

Expert knowledge for working with Claude Code's system prompts, builtin tool descriptions, sub-agent prompts, and utility prompts. This skill enables AI agents to understand, reference, and help users customize Claude Code's internal prompt architecture.

What This Project Provides

The claude-code-system-prompts repository contains:

• All system prompts used by Claude Code (main agent, sub-agents, utilities)
• 24 builtin tool descriptions (Write, Bash, Read, etc.)
• Sub-agent prompts (Plan, Explore, Task, and 30+ others)
• Utility prompts (CLAUDE.md generation, compaction, security review, etc.)
• System reminders (~40 conditional prompt fragments)
• Token counts for each prompt component
• Version history (CHANGELOG.md) tracking prompt changes across 180+ releases

This is updated within minutes of each Claude Code release (currently v2.1.143, May 15 2026).