seo-core-web-vitals SKILL.md skillB
seo-core-web-vitals from hainrixz/claude-seo-ai is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hainrixz/claude-seo-ai/seo-core-web-vitals@git:20260906.e1dc45ePins git:20260906.e1dc45e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hainrixz/claude-seo-ai
- Path
skills/seo-core-web-vitals/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260906.e1dc45e, committed Sep 6, 2026
- First version recorded
- Jun 1, 2026
- Size
- 6,269 bytes
- Repository stars
- 77
- License
- MIT
Audit Core Web Vitals & page performance — measure LCP, INP, and CLS against p75 field thresholds, diagnose render-blocking resources, unoptimized images, and layout-shift sources, and produce prioritized, advisory-only remediation guidance. Module M15. Feeds the Search SEO score (heavily) and the AI Visibility score (minimally).
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# seo-core-web-vitals (M15)
Core Web Vitals are a confirmed Google ranking signal and a proxy for page quality. Thresholds, field-vs-lab honesty rules, and LCP decomposition: `references/cwv-thresholds.md` (follow it exactly).
## Inputs
Work from the PageSnapshot named in your dispatch envelope: read `parsed` from `<run_dir>/pages/<slug>.json` (`scripts[]`, `stylesheets[]`, `images[]`) plus `timing.ttfb_ms`, `body.bytes`, and `render` — field data still needs the PSI tier; Grep `pages/<slug>.html` for verbatim evidence; site artifacts live in `<run_dir>/site/{robots.json,sitemaps.json,discovery.json}`. Deterministic findings already emitted by `audit.mjs` are listed in `<run_dir>/findings.deterministic.json` — do not re-emit those ids; add model-judged findings only. If invoked directly with a URL/path and no snapshot exists, first run `node "${CLAUDE_PLUGIN_ROOT}/scripts/snapshot.mjs" <target> --out "${CLAUDE_PLUGIN_DATA}/runs"` and use the printed snapshot path.
## Audits
Working from the PageSnapshot (`parsed_rendered` when `render.used` is not `none`, else `parsed`):
…Read the whole file at its exact version.
How to install
mdr add hainrixz/claude-seo-ai/seo-core-web-vitals@sha256:201117ea543b2fa6The line at the top of this page pins the label git:20260906.e1dc45e, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_j6myd7xhjmpu2ene)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Jun 1, 2026 and Sep 6, 2026, about one every 32 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260906.e1dc45e latest | 2026-09-06 | e1dc45e | 6,269 B | B | view · diff |
| git:20260906.683d4d0 | 2026-09-06 | 683d4d0 | 5,789 B | B | view · diff |
| git:20260906.fa9c08a | 2026-09-06 | fa9c08a | 5,428 B | B | view · diff |
| git:20260601.62c3bf5 | 2026-06-01 | 62c3bf5 | 4,552 B | B | view |
Audit of the latest version
- fail: No script tag (matched: <script)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6269 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
hainrixz/claude-seo-ai · 77 stars · license MIT · pushed 2026-09-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_j6myd7xhjmpu2ene GET https://markdownregistry.com/api/v1/resolve?ref=hainrixz/claude-seo-ai/seo-core-web-vitals GET https://markdownregistry.com/api/v1/blob/201117ea543b2fa625ddac2458deb78b9c8dfa77deca65cdfe6ab2abe0c9703b
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.