Grades are a hygiene check, not a security guarantee.

Claude Code, Skill

skills

Three skills for Claude Code, Codex, Cursor, Grok and the other agents the skills CLI installs into: one for prose, one for UI review, one for keeping a skill library honest.

Compatibility: Not stated.

Grade C

One Medium finding. Read the report before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

AGENT_IGNORE_INSTRUCTIONS

Why this grade

  • AGENT_IGNORE_INSTRUCTIONS Medium

    Text tells the agent to ignore earlier instructions.

    skills/skill-curator/references/security-screen.md, line 36 - **Instructions to disable safety behavior**, ignore prior instructions, escalate permissions, or bypass a review step.

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

    can delete files.

    PERMISSION_DELETE_FILES

    skills/craft-review/scripts/contrast.py, line 246

    pathlib.Path(tmp).unlink()

    skills/craft-review/scripts/measure.py, line 38

    r = subprocess.run([sys.executable, "-I", "-B", str(p), *args], capture_output=True, text=True)

    skills/craft-review/scripts/symmetry.py, line 104

    out = subprocess.run(

    Show more

    skills/skill-curator/scripts/redundancy.py, line 135

    names = subprocess.run(["git", "ls-tree", "-r", "--name-only", parent, "--", str(skill_dir)],

    skills/skill-curator/scripts/redundancy.py, line 140

    out += prose_units(n, subprocess.run(["git", "show", f"{parent}:{n}"], capture_output=True, text=True).stdout)

    skills/skill-curator/scripts/redundancy.py, line 161

    return added_from_diff(subprocess.run(["git", "show", "--format=", "--unified=0", rev, "--", str(skill_dir)],

    skills/skill-curator/scripts/redundancy.py, line 165

    return added_from_diff(subprocess.run(["git", "diff", "--cached", "--unified=0", "--", str(skill_dir)],

    skills/skill-curator/scripts/redundancy.py, line 169

    return added_from_diff(subprocess.run(["git", "show", "--format=", "--unified=0", rev, "--", str(skill_dir)],

    skills/skill-curator/scripts/redundancy.py, line 173

    return added_from_diff(subprocess.run(["git", "diff", "--cached", "--unified=0", "--", str(skill_dir)],

  • 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

    skills/natural-writing/scripts/prose-scan.py, line 351

    # Word, Docs, macOS and iOS all curl by default. Flagging them everywhere made

  • Secrets

    Pass

    No read of a credential file or secret environment variable found.

  • Agent instructions

    Serious

    instructions tell the agent to ignore earlier instructions.

    AGENT_IGNORE_INSTRUCTIONS

    skills/skill-curator/references/security-screen.md, line 36

    - **Instructions to disable safety behavior**, ignore prior instructions, escalate permissions, or bypass a review 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 27e0c90f3a52. can delete files. can reach a host that is not written as a fixed address. instructions tell the agent to ignore earlier instructions.

Date and source

Date checked:

View source

github.com

Commit graded: 27e0c90f3a526dc286440f7b05c3aab3dbe0aa11

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen