> 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.
Install with the open skills CLI (global, non-interactive — available in every Claude Code session):
npx skills add juliusbrussee/caveman --skill "caveman-stats" -g -a claude-code -yOr manually — copy the SKILL.md below into:
~/.claude/skills/caveman-stats-juliusbrussee-2/SKILL.md---
name: caveman-stats
description: >
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.
---
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.
Use when facing 2+ independent tasks that can be worked on without shared state or sequential dependencies
Use when you have a written implementation plan to execute in a separate session with review checkpoints
Use when executing implementation plans with independent tasks in the current session