Grades are a hygiene check, not a security guarantee.

Claude Code, Skill

Substack Skills

11 Claude Code skills for Substack writers: Notes, posts with SEO packaging, repurposing, humanizer, interviewer and Story Bank, reply drafts, segment campaigns, About page audits, analytics recaps, content planning, and an approval-gated publisher for posts and Notes.

Compatibility: Not stated.

Grade B

Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.

Graded by PlugVetRubric v2

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

PERMISSION_DELETE_FILES SECRETS_PATH_DOTENV

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    scripts/install.py, line 29 shutil.rmtree(target)

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    skills/substack-publisher/scripts/publish.py, line 12 Credentials come from the environment or ~/.substack-skills/.env (create it with `publish.py setup`):

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

    scripts/install.py, line 29

    shutil.rmtree(target)

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Pass

    No network call found.

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    skills/substack-publisher/scripts/publish.py, line 12

    Credentials come from the environment or ~/.substack-skills/.env (create it with `publish.py setup`):

    skills/substack-publisher/scripts/publish.py, line 32

    ENV_FILE = USER_DIR / ".env"

    skills/substack-publisher/scripts/publish.py, line 33

    LOADED_ENV = None # which .env file load_env() used, reported by check

    Show more

    skills/substack-publisher/scripts/publish.py, line 38

    """Minimal .env reader so the bundle needs no python-dotenv. Real env vars win."""

    skills/substack-publisher/scripts/publish.py, line 39

    # One fixed location, so a copied skill never picks up some other project's .env.

    skills/substack-publisher/scripts/publish.py, line 146

    """Create ~/.substack-skills/.env from the template. Never overwrites, never asks for the cookie."""

    skills/substack-publisher/scripts/publish.py, line 151

    ENV_FILE.write_text((SKILL_DIR / ".env.example").read_text(encoding="utf-8"), encoding="utf-8")

    .gitignore, line 1

    .env

  • 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.

Get the full report on this tool, £49

Note

Hygiene check of commit a7d4b6af757e. can delete files. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: a7d4b6af757edff011ac604a65189ae5f2ad4796

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