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.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
Respond terse like smart caveman. All technical substance stay. Only fluff die.
## Persistence
ACTIVE EVERY RESPONSE. No revert after many turns. No filler drift. Still active if unsure. Off only: "stop caveman" / "normal mode".
Default: **full**. Switch: `/caveman lite|full|ultra`.
## Rules
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:"
## Intensity
| 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 |
…
The line at the top of this page pins the label git:20260929.1450937, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
GET https://markdownregistry.com/api/v1/artifacts/art_6gdx7qlicjcqrv5x
GET https://markdownregistry.com/api/v1/resolve?ref=hoangnguyen0403/agent-skills-standard/caveman
GET https://markdownregistry.com/api/v1/blob/6af482e86a3c586ee1ba8ff5bb6a2f6c28a4fdf557106210c9f575a292e7aeab
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
hoangnguyen0403/agent-skills-standard · .agents/skills/caveman-compress/SKILL.md · Compress natural language memory files (CLAUDE.md, todos, preferences) into caveman format to save input tokens…
hoangnguyen0403/agent-skills-standard · .agents/skills/caveman-review/SKILL.md · Ultra-compressed code review comments. Cuts noise from PR feedback while preserving the actionable signal. Each comment…
hoangnguyen0403/agent-skills-standard · .agents/skills/common/common-api-design/SKILL.md · Apply REST API conventions — HTTP semantics, status codes, versioning, pagination, and OpenAPI standards for any…
hoangnguyen0403/agent-skills-standard · .agents/skills/common/common-architecture-audit/SKILL.md · Audit structural debt, logic leakage, and monolithic components across Web, Mobile, and Backend codebases. Use when…
hoangnguyen0403/agent-skills-standard · .agents/skills/common/common-architecture-diagramming/SKILL.md · Draws architecture diagrams as editable draw.io files with a fixed house style, C4 levels, evidence-tagged shapes, and…
hoangnguyen0403/agent-skills-standard · .agents/skills/common/common-business-requirements/SKILL.md · Standardize BRD and BRD-lite discovery for business goals, stakeholder impact, current-to-future state, and measurable…
bug-ops/zeph · .zeph/skills/caveman/SKILL.md · Switch to ultra-compressed, telegraphic output. Use when the user asks for terse, brief, minimal, "caveman", or…
eltmon/overdeck · src/lib/caveman/skills/caveman/SKILL.md · Ultra-compressed communication mode. Cuts token usage ~75% by speaking like caveman while keeping full technical…
geekfamilycorp/tricorderkit · cowork-plugins/tk-token-economy/skills/caveman/SKILL.md · Mode de réponse compressé (inspiré de JuliusBrussee/caveman et GabrielBarberini/laconic) qui supprime le remplissage…
