carbon-update SKILL.md skillB
carbon-update from gwittebolle/claude-carbon is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add gwittebolle/claude-carbon/carbon-update@git:20261021.07fd785Pins git:20261021.07fd785 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- gwittebolle/claude-carbon
- Path
skills/carbon-update/SKILL.md- Versions recorded
- 8
- Latest version
- git:20261021.07fd785, committed Oct 21, 2026
- First version recorded
- Jun 22, 2026
- Size
- 4,484 bytes
- Repository stars
- 238
- License
- MIT
Update claude-carbon to the latest version (a clone install also re-prices its history, CO2-only).
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
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, whichever way it was installed: the plugin through Claude Code's own plugin commands, or the installer's git clone (dirty-safe `git pull`, setup refreshed, stored sessions re-priced 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"
# A jq the installer fetched into the data folder (a Mac older than macOS 15 has none)
JQ_DIR="$(ccp "${CLAUDE_CONFIG_DIR:-$HOME/.claude}")/claude-carbon/bin"
…Read the whole file at its exact version.
How to install
mdr add gwittebolle/claude-carbon/carbon-update@sha256:7648e54bdd0780bdThe line at the top of this page pins the label git:20261021.07fd785, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_a5knk2xani72clcq)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 8 versions of this file, between Jun 22, 2026 and Oct 21, 2026, about one every 17 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261021.07fd785 latest | 2026-10-21 | 07fd785 | 4,484 B | B | view · diff |
| git:20261021.0b73648 | 2026-10-21 | 0b73648 | 3,979 B | B | view · diff |
| git:20261021.f72ac38 | 2026-10-21 | f72ac38 | 2,286 B | B | view · diff |
| git:20261014.e67ecde | 2026-10-14 | e67ecde | 2,193 B | B | view · diff |
| git:20260902.8b0a84f | 2026-09-02 | 8b0a84f | 1,945 B | B | view · diff |
| git:20260801.994acda | 2026-08-01 | 994acda | 1,435 B | B | view · diff |
| git:20260722.eccf27c | 2026-07-22 | eccf27c | 1,296 B | B | view · diff |
| git:20260622.1f30903 | 2026-06-22 | 1f30903 | 1,276 B | B | view |
Audit of the latest version
- fail: No curl or wget piped into a shell (matched: curl -fsSL https://raw.githubusercontent.com/gwittebolle/claude-carbon/main/install.sh | bash)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4484 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
gwittebolle/claude-carbon · 238 stars · license MIT · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_a5knk2xani72clcq GET https://markdownregistry.com/api/v1/resolve?ref=gwittebolle/claude-carbon/carbon-update GET https://markdownregistry.com/api/v1/blob/7648e54bdd0780bd6c9295032d8e7ef4f4c98aa3f4f873c115fdc2ab32447cc8
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.