# Caveman Stats

> Show real token usage and estimated savings for the current session. Reads directly from the Claude Code session log — no AI estimation. Triggers on /caveman-stats. Output is injected by the mode-tracker hook; the model itself does not compute the numbers.

- Skill: `john-data-chen/caveman-stats` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add john-data-chen/caveman-stats`
- Raw SKILL.md: https://api.skillmd.com/api/skills/john-data-chen/caveman-stats/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: john-data-chen (https://skillmd.com/u/john-data-chen)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/john-data-chen/caveman-stats

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This skill is delivered by `hooks/caveman-stats.js` (read by `hooks/caveman-mode-tracker.js` on `/caveman-stats`). The model does not need to do anything when this skill fires — the hook returns `decision: "block"` with the formatted stats as the reason. The user sees the numbers immediately.