Claude Code, Skill
Opinionated Claude Skills
This project descends from the personal prompts I'd been keeping for Claude Code prior to the release of skills and plugins.
Compatibility: Not stated.
Grade D
Two or more Medium findings, or a High. Only try it in a sandbox.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
INSTALL_REMOTE_SCRIPT SECRETS_PATH_CREDENTIAL
Why this grade
- INSTALL_REMOTE_SCRIPT Medium
Fetches a script from the network and runs it (a pipe to a shell, or an install hook with a URL).
scripts/dev-setup.sh, line 51
curl -fsSL https://claude.ai/install.sh | bash - SECRETS_PATH_CREDENTIAL Medium
Mentions a credential store path (~/.ssh, id_rsa, .npmrc, .aws/credentials, credentials.json, .netrc).
extras/harden-claude-config.sh, line 43
# credentials.files read-deny ~/.ssh, ~/.aws, ~/.gnupg, ~/.netrc
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.
If you think this grade is wrong, email [email protected] with the entry link and your evidence. We aim to acknowledge within two working days and decide within seven. If we confirm an error, we aim to correct it within 24 hours of confirming it. These are aims, not guarantees.
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
Pass
No shell or command execution found, and no extra permission was declared.
Install and update
Serious
install fetches a script from the network.
INSTALL_REMOTE_SCRIPT
scripts/dev-setup.sh, line 51
curl -fsSL https://claude.ai/install.sh | bash
scripts/install-and-verify.sh, line 146
curl -fsSL https://claude.ai/install.sh | bash
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
scripts/install-and-verify.sh, line 592
body=$(curl -sSL --max-time 30 "${url}.md") || return 1
opinionated-research/agents/fact-checker.md, line 165
- **Don't return `OFF-TOPIC`/`CONTRADICTS` off a lossy fetch.** `WebFetch` returns a small model's answer over the page, not the full text, and truncates long pages - so a "doesn't
Secrets
Concern
reads a credential or environment file.
SECRETS_PATH_CREDENTIAL SECRETS_PATH_DOTENV
extras/harden-claude-config.sh, line 43
# credentials.files read-deny ~/.ssh, ~/.aws, ~/.gnupg, ~/.netrc
extras/harden-claude-config.sh, line 183
{ "path": "~/.netrc", "mode": "deny" }
extras/harden-claude-config.sh, line 319
env_type="$(printf '%s' "$current" | jq -r '.env | type')"
Show more
extras/harden-claude-config.sh, line 321
|| _die "existing .env is a $env_type, not an object; refusing to merge"
extras/harden-claude-config.sh, line 335
current_env="$(printf '%s' "$current" | jq -c '.env // {}')"
extras/harden-claude-config.sh, line 374
.env = ((.env // {}) + $env)
extras/harden-codex-config.sh, line 72
# Codex may also read ${CODEX_HOME:-$HOME/.codex}/.env for environment values in
extras/harden-codex-config.sh, line 73
# desktop and IDE contexts. This script does not manage .env because current
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 271bbad0fb69. install fetches a script from the network. 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: 271bbad0fb69b592894132e7f36b37048d5f6c83
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