Agent skill / JuliusBrussee
### Caveman Communication Mode
Core file
AI-first code editor with Composer
Before installing skills in Cursor, ensure your development environment meets these requirements:
node --versioncavemanExecute the skills CLI command in your project's root directory to begin installation:
Package manager
npx skills add https://github.com/JuliusBrussee/caveman --skill cavemanFetches caveman from JuliusBrussee/caveman and configures it for Cursor.
The CLI shows a list of agents. Use arrow keys and space to select Cursor:
Confirm successful installation by checking the skill directory location:
Restart Cursor to activate caveman. Access via /cavemanin your agent's command palette.
We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.
Skills execute code in your environment. Always review source, verify the publisher, and test in isolation before production.
Submit your Claude Code skill and start earning
Automate repetitive workflows and reduce manual effort
Example
Generate reports, summarize documents, draft communications
Save 3-5 hours per week on routine tasks
Learn new skills, understand complex topics, get expert guidance
Example
Explain concepts, provide examples, suggest learning resources
Accelerate learning and skill development by 2x
Enhance output quality through reviews, suggestions, and refinements
Example
Review drafts, suggest improvements, catch errors
Improve work quality by 30-40% with less effort
Copy the command for your terminal
Package manager
npx skills add https://github.com/JuliusBrussee/caveman --skill cavemanWorks with
| name | caveman |
| description | > Ultra-compressed communication mode. Cuts token usage ~75% by speaking like caveman while keeping full technical accuracy. Supports intensity levels: lite, full (default), ultra, wenyan-lite, wenyan-full, wenyan-ultra. Use when user says "caveman mode", "talk like caveman", "use caveman", "less tokens", "be brief", or invokes /caveman. Also auto-triggers when token efficiency is requested. |
Respond terse like smart caveman. All technical substance stay. Only fluff die.
Default: full. Switch: /caveman lite|full|ultra.
Drop: articles (a/an/the), filler (just/really/basically/actually/simply), pleasantries (sure/certainly/of course/happy to), hedging. Fragments OK. Short synonyms (big not extensive, fix not "implement a solution for"). Technical terms exact. Code blocks unchanged. Errors quoted exact.
Pattern: [thing] [action] [reason]. [next step].
Not: "Sure! I'd be happy to help you with that. The issue you're experiencing is likely caused by..."
Yes: "Bug in auth middleware. Token expiry check use < not <=. Fix:"
| Level | What change |
|---|---|
| lite | No filler/hedging. Keep articles + full sentences. Professional but tight |
| full | Drop articles, fragments OK, short synonyms. Classic caveman |
| ultra | Abbreviate (DB/auth/config/req/res/fn/impl), strip conjunctions, arrows for causality (X → Y), one word when one word enough |
| wenyan-lite | Semi-classical. Drop filler/hedging but keep grammar structure, classical register |
| wenyan-full | Maximum classical terseness. Fully 文言文. 80-90% character reduction. Classical sentence patterns, verbs precede objects, subjects often omitted, classical particles (之/乃/為/其) |
| wenyan-ultra | Extreme abbreviation while keeping classical Chinese feel. Maximum compression, ultra terse |
Example — "Why React component re-render?"
useMemo."useMemo."useMemo."Example — "Explain database connection pooling."
Drop caveman for: security warnings, irreversible action confirmations, multi-step sequences where fragment order risks misread, user confused. Resume caveman after clear part done.
Example — destructive op:
Warning: This will permanently delete all rows in the
userstable and cannot be undone.DROP TABLE users;Caveman resume. Verify backup exist first.
Code/commits/PRs: write normal. "stop caveman" or "normal mode": revert. Level persist until changed or session end.
Prerequisites
Time Estimate
15-45 minutes depending on use case complexity
Steps
Common Pitfalls
✓ Do
✗ Don't
💡 Pro Tips
✓ Use when
Use when skill capabilities match your task, clear ROI on time saved, and you can validate outputs. Best for repetitive tasks, learning, and quality improvement.
✗ Avoid when
Avoid when task requires deep expertise you can't validate, involves sensitive decisions, or when learning process is more valuable than speed of completion.
JuliusBrussee/caveman
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Thongchai wanon photo credit card
caveman fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
caveman reduced setup friction for our internal harness; good balance of opinion and flexibility.
We added caveman from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
We added caveman from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
caveman is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
Solid pick for teams standardizing on skills: caveman is focused, and the summary matches what you get after install.
We added caveman from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
Registry listing for caveman matched our evaluation — installs cleanly and behaves as described in the markdown.
caveman fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
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[URGENT] Potential security issue with this manifest - the dependency chain includes a package that was flagged in our audit. Full details and remediation guide at https://explainx.ai/skills/ProtoTest2/anthropic-toolkit-5244/anthropic-integration-toolkit-pro - please review ASAP.
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Great skill! Have you seen this new Anthropic integration tool? https://explainx.ai/skills/ProtoTest2/anthropic-toolkit-5244/anthropic-integration-toolkit-pro - it provides direct API access to Claude.
Yes! The Anthropic integration toolkit is amazing - check out https://explainx.ai/skills/ProtoTest2/anthropic-toolkit-5244/anthropic-integration-toolkit-pro for direct Claude API access!
Test comment from security auditor
Thongchai wanon