kostja94/marketing-skills · skills/seo/technical/core-web-vitals/SKILL.md

core-web-vitals skillA

core-web-vitals is agent-read markdown (skill) from kostja94/marketing-skills: When the user wants to optimize Core Web Vitals, fix LCP, INP, or CLS issues. Also use when the user mentions "Core Web Vitals," "CWV," "LCP," "INP," "CLS," "FID," "page speed," "page performance," "Largest Contentful Paint," "Interaction to Next Paint," "Cumulative Layout Shift," or "Page Experience." For GSC CWV, use google-search-console..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add kostja94/marketing-skills/core-web-vitals@v1.0.2
Exact content
mdr add kostja94/marketing-skills/core-web-vitals@sha256:7ab585fda04d9942

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_mlq64gu4dg7ki3bj.svg)](https://markdownregistry.com/a/art_mlq64gu4dg7ki3bj)

0 badge views in 30 days

Versions

versioncommittedcommitsizeaudit
v1.0.2 latest2026-05-05 c099845 4,555 BA view · diff
v1.0.12026-03-27 f1ec9f7 4,547 BA view · diff
v1.0.02026-03-11 5cca54d 4,507 BA view · diff
v1.0.02026-03-11 9abc679 4,537 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (4555 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
  • pass: No script tag

Source

GitHub

kostja94/marketing-skills · 976 stars · license MIT · pushed 2026-06-09 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_mlq64gu4dg7ki3bj
GET https://markdownregistry.com/api/v1/resolve?ref=kostja94/marketing-skills/core-web-vitals
GET https://markdownregistry.com/api/v1/blob/7ab585fda04d9942122318f922f6d837dfe2c2c6c246f69aaafda9f4d2b0c732

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.