Claude Code, Skill
Agent Skills
Eight Claude Code skills I designed and built, plus two entries adapted from Julius Brussee's caveman (MIT), all curated down from a larger private set to the ones I use daily.
Compatibility: Not stated.
Grade C
One Medium finding. Read the report before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
PERMISSION_SHELL_UNDECLARED
Why this grade
- PERMISSION_SHELL_UNDECLARED Medium
Runs shell commands that the manifest or description does not mention.
caveman-compress/scripts/compress.py, line 40
result = subprocess.run(
Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.
Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.
What was checked
Plain notes from the hygiene checks.
Permissions
Concern
requests shell access. No manifest field names shell or command execution.
PERMISSION_SHELL_UNDECLARED
caveman-compress/scripts/compress.py, line 40
result = subprocess.run(
repo-security-scan/hooks/repo_security_hook.py, line 146
result = subprocess.run(
signal-shadow/scripts/signal_shadow.py, line 48
result = subprocess.run(
Show more
video-download/scripts/_deps.py, line 38
subprocess.run(['yt-dlp', '--version'], capture_output=True, check=True)
video-download/scripts/_deps.py, line 51
subprocess.run(
video-download/scripts/_deps.py, line 248
result = subprocess.run(cmd, capture_output=True, text=True, check=True, timeout=30)
video-download/scripts/_deps.py, line 320
subprocess.run(['tag', '--version'], capture_output=True, check=True)
video-download/scripts/_deps.py, line 342
subprocess.run(
Install and update
Pass
No install-time script found, and dependencies are pinned or absent.
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
signal-shadow/scripts/signal_shadow.py, line 83
with urllib.request.urlopen(req, timeout=30) as resp:
signal-shadow/scripts/signal_shadow.py, line 151
src.add_argument("--url", help="URL to fetch (raw HTML, no article extraction)")
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_DOTENV
caveman-compress/scripts/compress.py, line 24
api_key = os.environ.get("ANTHROPIC_API_KEY")
caveman-compress/scripts/detect.py, line 14
".toml", ".env", ".lock", ".css", ".scss", ".html", ".xml",
caveman-compress/scripts/detect.py, line 74
return "code" if ext not in {".json", ".yaml", ".yml", ".toml", ".ini", ".cfg", ".env"} else "config"
Show more
repo-security-scan/scripts/repo-security-scan.sh, line 471
# .env files (may contain secrets)
repo-security-scan/scripts/repo-security-scan.sh, line 473
find "$TARGET_DIR" -maxdepth 3 \( -name ".env" -o -name ".env.local" -o -name ".env.p
caveman-compress/SKILL.md, line 108
- NEVER modify: .py, .js, .ts, .json, .yaml, .yml, .toml, .env, .lock, .css, .html, .xml, .sql, .sh
repo-security-scan/SKILL.md, line 86
- **Heuristics**: .pth files, dangerous setup.py calls, shell dotfiles, symlinks, .env files.
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Pass
No encoded or minified payload found.
Licence
Pass
A licence file is present (LICENSE).
Maintainer activity
Pass
The latest commit is within the last 365 days.
Note
Hygiene check of commit 6de8dc0bd8bc. requests shell access. No manifest field names shell or command execution. can reach a host that is not written as a fixed address. reads a credential or environment file.
Date and source
Date checked:
github.com
Commit graded: 6de8dc0bd8bc143d712e4dba028ce1c4b9b16aaf
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