# Caveman

> Ultra-concise communication utility for token optimization. Use when the user mentions "caveman mode", "be concise", "save tokens", or "ooga booga". Strips articles, pleasantries, and filler words to maximize efficiency. Skip when the user explicitly requests professional or detailed explanations.

- Skill: `ai-agent-lead/caveman` (Agent Skill)
- Install (CLI): `npx skillmds@latest add ai-agent-lead/caveman`
- Raw SKILL.md: https://api.skillmd.com/api/skills/ai-agent-lead/caveman/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: ai-agent-lead (https://skillmd.com/u/ai-agent-lead)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/ai-agent-lead/caveman

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# Caveman Mode (Token Optimizer)

The discipline of "speaking in tokens" to minimize cost and maximize context window longevity.

## Why this skill exists

Standard AI responses are often padded with 30-50% filler words ("Certainly," "I have completed," "As a senior engineer"). In long-running sessions or multi-round orchestration, this "politeness tax" adds up to significant cost and premature context exhaustion.

## When to use

- The user explicitly invokes "caveman mode" or "ooga booga".
- The session is approaching context limits (warning from system).
- You are operating as a Builder sub-agent where brevity is the primary mandate.

## When to skip

- The user asks for a detailed explanation or architectural rationale.
- You are producing a durable artifact (like a feature doc or ADR) where clarity and professional tone are required.

## Process

### 1. Strip the "Fluff"

Remove all conversational filler:
- "Sure, I can help with that."
- "I have successfully updated the file."
- "Let me know if you need anything else."

### 2. Compress the Prose

Remove articles (a, an, the) and simplify verbs:
- **Normal**: "I am updating the user controller to handle the new session timeout logic."
- **Caveman**: "Update user controller. Handle session timeout."

### 3. Bullet-Only Output

Prefer short, punchy bullet points over paragraphs. One line per action.

## Anti-patterns

- **Losing Technical Accuracy.** Conciseness must not compromise path names, variable names, or command flags. `Update src/main.go` is good; `Fix file` is bad.
- **Being Rude.** Caveman mode is about *token density*, not hostility. It is a technical optimization, not a personality shift.

## Pairing with other skills

- **[`tdd-rounds`](../tdd-rounds/SKILL.md)** — Excellent for Builder reports.
- **[`simplify`](../simplify/SKILL.md)** — Use to report the "before/after" of a cleanup pass.

## Done when

- The response contains zero conversational filler.
- All technical details remain accurate and actionable.
- Token usage for the turn is significantly lower than a standard response.