Grades are a hygiene check, not a security guarantee.

Claude Code, Skill

Seo Skill Bench

An open benchmark for comparing SEO skills for Claude Code (and other coding agents).

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 95e7256ffb8c, unchanged since the check below.

PERMISSION_DELETE_FILES NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST OBFUSCATION_ENCODED_BLOB SECRETS_ENV_READ

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    harness/footprint.mjs, line 139 fs.rmSync(tmp, { recursive: true, force: true });

  • NETWORK_NO_FIXED_HOST Low

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

    fixtures/pivot-saas/repo/app/blog/page.tsx, line 12 fetch('/api/posts')

  • NETWORK_UNNAMED_HOST Low

    Calls a fixed host that the description does not name.

    fixtures/pivot-saas/repo/app/blog/page.tsx, line 12 fetch('/api/posts')

  • OBFUSCATION_ENCODED_BLOB Low

    Contains a long base64 shaped string in a file that should be readable.

    results/2026-07-04T13-57-40-marketingskills-pivot-saas/run-1/artifacts/tsconfig.json, line 1 {

  • SECRETS_ENV_READ Note

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

    harness/judge.mjs, line 153 headers: { 'content-type': 'application/json', authorization: `Bearer ${process.env.OPENAI_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

    Concern

    can delete files.

    PERMISSION_DELETE_FILES

    harness/footprint.mjs, line 139

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

    harness/footprint.mjs, line 256

    if (!keep) fs.rmSync(workspace, { recursive: true, force: true });

    harness/run.mjs, line 131

    fs.rmSync(tmp, { recursive: true, force: 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. can reach api.openai.com. The description does not name that host.

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    fixtures/pivot-saas/repo/app/blog/page.tsx, line 12

    fetch('/api/posts')

    harness/judge.mjs, line 151

    const res = await fetch('https://api.openai.com/v1/chat/completions', {

    fixtures/pivot-saas/live/blog/index.html, line 35

    fetch('/api/posts')

    Show more

    results/2026-07-02T20-06-12-claude-seo-pivot-saas/run-1/transcript.json, line 1

    {"type":"result","subtype":"success","is_error":false,"api_error_status":null,"duration_ms":770663,"duration_api_ms":589608,"ttft_ms":4120,"ttft_stream_ms":1710,"time_to_request_ms

    results/2026-07-02T20-47-12-lhitches-claude-seo-skills-pivot-saas/run-2/transcript.json, line 1

    {"type":"result","subtype":"success","is_error":false,"api_error_status":null,"duration_ms":668417,"duration_api_ms":373634,"ttft_ms":2956,"ttft_stream_ms":1134,"time_to_request_ms

    results/2026-07-07T18-43-01-seoagent-pivot-saas/run-2/artifacts/.seoagent/roadmap.md, line 9

    - [x] Converted `/blog` from a broken client-side fetch (empty shell, Critical finding) to server-rendered, backed by `lib/posts.ts`

    results/2026-07-07T21-41-42-lionkiii-claude-seo-skills-pivot-saas/run-3/transcript.json, line 1

    {"type":"result","subtype":"success","is_error":false,"api_error_status":null,"duration_ms":744087,"duration_api_ms":575354,"ttft_ms":3083,"ttft_stream_ms":1660,"time_to_request_ms

  • Secrets

    Note

    reads an environment variable.

    SECRETS_ENV_READ

    harness/judge.mjs, line 153

    headers: { 'content-type': 'application/json', authorization: `Bearer ${process.env.OPENAI_API_KEY}` },

    harness/judge.mjs, line 199

    const useOpenAi = Boolean(process.env.OPENAI_API_KEY);

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Concern

    contains an encoded blob in a file that should be readable.

    OBFUSCATION_ENCODED_BLOB

    results/2026-07-04T13-57-40-marketingskills-pivot-saas/run-1/artifacts/tsconfig.json, line 1

    {

    README.md, line 9

    <img alt="Join the SEOAgent Slack community" height="52" src="https://img.shields.io/badge/Join%20our%20Slack%20Community-4A154B?style=for-the-badge&logoColor=white&labelColor=4A15

  • 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 95e7256ffb8c. can delete files. can reach a host that is not written as a fixed address. can reach api.openai.com. The description does not name that host. reads an environment variable. contains an encoded blob in a file that should be readable.

Date and source

Date checked:

View source

github.com

Commit graded: 95e7256ffb8c9f7688e910c27c00df1289427ab5

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