Grades are a hygiene check, not a security guarantee.

Claude Code, Plugin

Seo Skills

Claude SEO Skills — production Claude Agent Skills for the SE Ranking MCP server.

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.

Rescanned at commit fd6d1408f2e6, unchanged since the check below.

NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV INSTALL_DOCUMENTED_INSTALLER SECRETS_ENV_READ

Why this grade

  • NETWORK_NO_FIXED_HOST Low

    Makes a network call whose host is not written as a fixed address.

    examples/seo-api-seranking-com-20260522/code/curl.sh, line 14 curl -fsS -X GET "${BASE}/account/subscription" \

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    .gitignore, line 3 .env

  • INSTALL_DOCUMENTED_INSTALLER Note

    Documentation shows an installer that pipes a download into a shell.

    README.md, line 48 curl -fsSL https://raw.githubusercontent.com/seranking/seo-skills/main/install.sh | bash -s -- --all

  • SECRETS_ENV_READ Note

    Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.

    examples/seo-api-seranking-com-20260522/code/python.py, line 17 API_KEY = os.environ.get("SERANKING_API_KEY")

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

    Pass

    No shell or command execution found, and no extra permission was declared.

  • Install and update

    Note

    README documents an installer that pipes a download into a shell. The docs document an installer that pipes a download into a shell.

    INSTALL_DOCUMENTED_INSTALLER

    README.md, line 48

    curl -fsSL https://raw.githubusercontent.com/seranking/seo-skills/main/install.sh | bash -s -- --all

    install.sh, line 18

    # curl -fsSL https://raw.githubusercontent.com/seranking/seo-skills/main/install.sh | bash

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    examples/seo-api-seranking-com-20260522/code/curl.sh, line 14

    curl -fsS -X GET "${BASE}/account/subscription" \

    examples/seo-api-seranking-com-20260522/code/curl.sh, line 18

    curl -fsS -X GET "${BASE}/domain/overview/worldwide?domain=${DOMAIN}&currency=USD" \

    examples/seo-api-seranking-com-20260522/code/curl.sh, line 22

    curl -fsS -X GET "${BASE}/domain/competitors?source=${SOURCE}&domain=${DOMAIN}&type=organic" \

    Show more

    examples/seo-api-seranking-com-20260522/code/curl.sh, line 26

    curl -fsS -X POST "${BASE}/backlinks/summary" \

    examples/seo-api-seranking-com-20260522/code/python.py, line 32

    r = requests.request(

    examples/seo-api-seranking-com-20260522/code/typescript.ts, line 27

    const res = await fetch(`${BASE}${path}${qs}`, {

    scripts/crux_history.py, line 86

    resp = requests.post(

    scripts/google_auth.py, line 197

    with urllib.request.urlopen(req) as resp:

    skills/seo-api/references/auth-and-keys.md, line 28

    curl -X GET 'https://api.seranking.com/v1/account/subscription' \

    skills/seo-api/references/auth-and-keys.md, line 37

    curl -X GET 'https://api.seranking.com/v1/account/subscription?apikey=YOUR_API_KEY'

    skills/seo-api/references/auth-and-keys.md, line 47

    curl -X GET 'https://api.seranking.com/v1/account/subscription' \

    skills/seo-api/references/rate-limits-and-credits.md, line 94

    curl -X GET 'https://api.seranking.com/v1/account/subscription' \

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    examples/seo-api-seranking-com-20260522/code/python.py, line 17

    API_KEY = os.environ.get("SERANKING_API_KEY")

    examples/seo-api-seranking-com-20260522/code/typescript.ts, line 7

    const API_KEY = process.env.SERANKING_API_KEY;

    .gitignore, line 3

    .env

    Show more

    scripts/google_auth.py, line 93

    config["service_account_path"] = os.environ.get("GOOGLE_APPLICATION_CREDENTIALS")

    scripts/google_auth.py, line 96

    config["api_key"] = os.environ.get("GOOGLE_API_KEY")

    .gitignore, line 2

    *.log

    skills/seo-api/references/auth-and-keys.md, line 178

    - **Never commit keys to git.** Even in private repos. Use `.env` (gitignored) + a secret manager (1Password, Doppler, AWS Secrets Manager, Vault).

  • 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 fd6d1408f2e6. README documents an installer that pipes a download into a shell. The docs document an installer that pipes a download into a shell. 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: fd6d1408f2e6a06454d81c07c29e0f04342eb9ba

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