---
name: Carbon Update
slug: carbon-update
category: Automation
description: Carbon Update updates claude-carbon to the latest version and re-prices stored session history using the current CO2-only factors. Use it after installing or when you want the status line and historical pricing to match the newest data.
github: "https://github.com/gwittebolle/claude-carbon/tree/main/skills/carbon-update"
language: Shell
stars: 187
forks: 17
install: "npx degit https://github.com/gwittebolle/claude-carbon/tree/main/skills/carbon-update ~/.claude/skills/carbon-update"
installs_to: ~/.claude/skills/carbon-update
source_path: skills/carbon-update/SKILL.md
collection_size: 5
category_size: 2032
collection_url: "https://dirskills.com/collections/gwittebolle/claude-carbon"
added: 2026-09-06T05:20:25.058Z
last_synced: 2026-09-06T05:20:25.058Z
canonical_url: "https://dirskills.com/skills/carbon-update"
---

# Carbon Update

Carbon Update updates claude-carbon to the latest version and re-prices stored session history using the current CO2-only factors. Use it after installing or when you want the status line and historical pricing to match the newest data.

**Install:**

```bash
npx degit https://github.com/gwittebolle/claude-carbon/tree/main/skills/carbon-update ~/.claude/skills/carbon-update
```

## README

Run the following bash script exactly as written and present its output to the user. Do not paraphrase. It updates the user's claude-carbon install (dirty-safe `git pull`), refreshes setup, and re-prices stored sessions with the new factors.

```bash
#!/usr/bin/env bash
# Locate the install that is actually wired into the status line, then run its updater.
REPO_DIR=""
# Windows (Git Bash): CLAUDE_* variables and the paths stored in settings.json can
# arrive in the native "C:\Users\..." spelling, which bash cannot open. cygpath
# ships with Git for Windows; everywhere else this is the identity function.
ccp() {
  case "${OSTYPE:-}" in msys*|cygwin*) ;; *) printf '%s' "$1"; return 0 ;; esac
  case "$1" in
    [A-Za-z]:[\\/]*|*\\*) cygpath -u "$1" 2>/dev/null || printf '%s' "$1" ;;
    *) printf '%s' "$1" ;;
  esac
}
SETTINGS="$(ccp "${CLAUDE_CONFIG_DIR:-$HOME/.claude}")/settings.json"
if command -v jq >/dev/null 2>&1 && [ -f "$SETTINGS" ]; then
  SL_CMD="$(jq -r '.statusLine.command // empty' "$SETTINGS" 2>/dev/null)"
  # statusLine.command stores a shell-escaped path: expand ~ and unescape spaces
  SL_CMD="${SL_CMD//\\ / }"; SL_CMD="${SL_CMD/#\~/$HOME}"; SL_CMD="$(ccp "$SL_CMD")"
  if [ -n "$SL_CMD" ] && [ -f "$SL_CMD" ]; then
    REPO_DIR="$(cd "$(dirname "$SL_CMD")/.." 2>/dev/null && pwd)"
  fi
fi
[ -z "$REPO_DIR" ] && [ -n "${CLAUDE_PLUGIN_ROOT:-}" ] && REPO_DIR="$(ccp "$CLAUDE_PLUGIN_ROOT")"
[ -z "$REPO_DIR" ] && REPO_DIR="$(ccp "${CLAUDE_CARBON_DIR:-$HOME/code/claude-carbon}")"

if [ -f "${REPO_DIR}/scripts/update.sh" ]; then
  bash "${REPO_DIR}/scripts/update.sh"
else
  echo "claude-carbon updater not found at ${REPO_DIR}/scripts/update.sh"
  echo "Re-run the installer to update:"
  echo "  curl -fsSL https://raw.githubusercontent.com/gwittebolle/claude-carbon/main/install.sh | bash"
fi
```