Overview
caveman is a viral Claude Code skill that instructs the AI to communicate in a radically abbreviated 'caveman' style, dropping articles, prepositions, and polite language in favor of grunts, fragments, and single-word commands. It achieves a reported 65% reduction in token consumption for routine coding tasks, making it one of the most popular productivity experiments in the Claude Code skill ecosystem with 86K+ GitHub stars.
Features
- ✓65% average token reduction for coding tasks
- ✓Minimalist prompting style (e.g., 'fix bug', 'refactor this')
- ✓Skill-based architecture via Claude Code /skill system
- ✓Configurable compression level from mild to full caveman
- ✓Open-source MIT license, community-contributed improvements
Installation
/skill marketplace add JuliusBrussee/cavemanPros
- +Dramatic token savings (65% average reduction)
- +Viral community adoption (86K+ stars)
- +Simple installation via /skill marketplace
- +Open-source with active community contributions
Cons
- −Reduced nuance in complex architectural discussions
- −May confuse new users unfamiliar with abbreviated style
- −Effectiveness varies by task complexity
- −Not suitable for documentation or explanatory code
Alternatives
Documentation
caveman
Overview
caveman is a viral Claude Code skill that instructs the AI to communicate in a radically abbreviated "caveman" style — dropping articles, prepositions, and polite language in favor of grunts, fragments, and single-word commands. With 86,000+ GitHub stars, it achieves a reported 65% reduction in token consumption for routine coding tasks, making it one of the most popular productivity experiments in the Claude Code skill ecosystem.
Features
- 65% average token reduction — strips filler language from AI responses
- Minimalist prompting — commands like "fix bug," "add test," "refactor this" replace full sentences
- Skill-based architecture — installable via Claude Code's
/skillsystem - Configurable verbosity — users can adjust the compression level from mild to "full caveman"
- Open-source — MIT license, community-contributed improvements
Installation
/skill marketplace add JuliusBrussee/caveman
Quick Start
Normal Claude Code: "Could you please take a look at this function and help me refactor it to be more efficient?"
caveman mode: "refactor func. make fast. go."
Usage Examples
Before (normal mode)
"Could you please help me add a test for the authentication middleware? I need to verify that the JWT token is properly validated and that unauthorized requests are rejected with a 401 status code."
After (caveman mode)
"test auth middleware. check jwt validate. 401 no token. go."
Pros
- ✅ Dramatic token savings (65% average reduction)
- ✅ Viral community adoption (86K+ stars)
- ✅ Simple installation via /skill marketplace
- ✅ Open-source with active community contributions
Cons
- ❌ Reduced nuance in complex architectural discussions
- ❌ May confuse new users unfamiliar with abbreviated style
- ❌ Effectiveness varies by task complexity
- ❌ Not suitable for documentation or explanatory code
When to Use
caveman is ideal for routine coding tasks where token efficiency matters — quick fixes, boilerplate generation, simple refactors, and test writing. For complex architectural discussions, design documents, or collaborative code reviews, consider using a more verbose mode.