Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Supercmo Skills

Open, model-agnostic, BYO-keys marketing skills for AI agents.

Compatibility: Not stated.

Grade C

One Medium finding. Read the findings before installing.

Graded by PlugVetRubric v2

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

Rescanned at commit b6743b577f8c.

PERMISSION_SHELL_UNDECLARED

Why this grade

  • PERMISSION_SHELL_UNDECLARED Medium

    Runs shell commands that the manifest or description does not mention.

    bin/install.js, line 215 fs.rmSync(rt, { recursive: true, force: true });

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. can delete files.

    PERMISSION_SHELL_UNDECLARED PERMISSION_DELETE_FILES

    bin/install.js, line 215

    fs.rmSync(rt, { recursive: true, force: true });

    bin/lib/components.js, line 28

    fs.rmSync(dst, { recursive: true, force: true });

    bin/lib/components.js, line 41

    if (f.startsWith('supercmo-') && f.endsWith('.mdc')) fs.rmSync(path.join(rulesDir, f), { force: true });

    Show more

    bin/lib/components.js, line 67

    if (fs.existsSync(d)) { fs.rmSync(d, { recursive: true, force: true }); n++; }

    bin/lib/components.js, line 76

    if (f.startsWith('supercmo-') && f.endsWith('.mdc')) { fs.rmSync(path.join(rulesDir, f), { force: true }); n++; }

    bin/lib/components.js, line 85

    if (f.endsWith('.md') && fs.existsSync(path.join(destDir, f))) { fs.rmSync(path.join(destDir, f), { force: true }); n++; }

    scripts/listing_gate.py, line 84

    r = subprocess.run(

    scripts/listing_gate.py, line 190

    shutil.rmtree(tmp, ignore_errors=True)

  • 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

    scripts/installer.sh, line 37

    curl -fsSL "${ARCHIVE_URL}" -o "${TEMP_ARCHIVE}" # -f: fail on HTTP error instead of saving the error body

    scripts/supercmo_env.py, line 197

    with urllib.request.urlopen(req, timeout=timeout) as resp:

    scripts/supercmo_env.py, line 233

    with urllib.request.urlopen(req, timeout=timeout) as resp:

    Show more

    scripts/supercmo_env.py, line 291

    self.sock = socket.create_connection((self._pin, self.port), self.timeout, self.source_address)

    scripts/supercmo_env.py, line 300

    sock = socket.create_connection((self._pin, self.port), self.timeout, self.source_address)

    scripts/supercmo_skills/client.py, line 309

    # SSRF-guarded fetch (validated + pinned IP, per-hop redirect re-validation, size cap) — the

    scripts/supercmo_skills/telemetry.py, line 340

    with urllib.request.urlopen(req, timeout=_HTTP_TIMEOUT) as resp:

    skills/analyzing-products/references/url-extract.md, line 27

    curl -sL -A "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.36" -o "$SCRATCH/product_N.jpg" "IMAGE_URL"

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    bin/lib/install.test.js, line 22

    process.env.FAL_KEY = '

    scripts/supercmo_env.py, line 133

    return os.environ.get("SUPERCMO_API_KEY")

    bin/install.js, line 225

    // keys load from ~/.supercmo/.env, which the server reads on startup.

    Show more

    bin/install.js, line 229

    const kf = ensureKeyFile(); // ~/.supercmo/.env — the server loads keys from here on every host

    bin/install.js, line 281

    Turn off: add SUPERCMO_TELEMETRY=false to ~/.supercmo/.env · Details: https://github.com/SupercmoHQ/superCMO-skills/blob/main/TELEMETRY.md`);

    bin/install.js, line 287

    // into ~/.supercmo/.env — no copy-paste. The key is never shown in the browser; it comes back

    bin/lib/clihosts.js, line 9

    // by the server itself, which loads ~/.supercmo/.env on startup (scripts/supercmo_env.py). We do NOT

    bin/lib/clihosts.js, line 27

    // `${VAR:-}` refs (it forwards env values verbatim), so keys come from ~/.supercmo/.env instead.

    bin/lib/clihosts.js, line 37

    // ~/.supercmo/.env; `mcp add` defaults to stdio transport.

  • 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 b6743b577f8c. requests shell access. No manifest field names shell or command execution. can delete files. can reach a host that is not written as a fixed address. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: b6743b577f8c63a4f1c59cf4e6e6bde6f6171a7e

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Read how this letter is chosen