# Session Token Stats

Shows output and cache token usage for the current Claude Code session.

- Repository: https://github.com/JuliusBrussee/caveman (116680 stars)
- Category: Data and ML
- License: Apache-2.0
- Last updated: 2026-11-01
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add JuliusBrussee/caveman --skill caveman-stats -g -a claude-code -y`
Codex: `npx skills add JuliusBrussee/caveman --skill caveman-stats -g -a codex -y`
Cursor: `npx skills add JuliusBrussee/caveman --skill caveman-stats -g -a cursor -y`
Gemini CLI: `npx skills add JuliusBrussee/caveman --skill caveman-stats -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add JuliusBrussee/caveman`

## Description

Show recorded output and cache-read token usage and mode attribution for the current Claude Code session, or locate the host's native usage report. Trigger: /caveman-stats.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

In Claude Code, `src/hooks/caveman-mode-tracker.js` runs `src/hooks/caveman-stats.js` on `/caveman-stats` and supplies its report through `hookSpecificOutput.additionalContext`. Print that report verbatim inside a fenced code block, as the hook instructs. Do not calculate or add numbers yourself.

In Gemini CLI, direct the user to `/stats model` for current session token usage or `/stats session` for session statistics. Gemini custom commands are prompts; they cannot invoke the built-in command or read its live session metrics. Never read Claude Code transcripts as Gemini usage. In other hosts, use a native usage report if one is available; otherwise say that current session usage is unavailable. The Claude reader and its lifetime history apply only to Claude Code. Savings remain unknown in every host without a measured comparison.

The report shows recorded output and cache-read tokens, response counts, and mode attribution where available. Savings are unknown: the transcript has no measured comparison without Caveman. Do not infer saved tokens, percentages, dollars, rule overhead, or a net result from output counts or the current mode.

`--all` and `--since 7d` aggregate the latest recorded output count per session. `--share` reports observed usage with savings unknown. Historical `est_saved_*` fields are ignored; their original history rows remain on disk. The statusline shows the active mode without the retired savings badge.

Original/current memory-file pairs are reported by their measured byte sizes. Those file-size differences do not establish provider token or billing savings. See `docs/HONEST-NUMBERS.md`.