kostja94/marketing-skills · skills/seo/on-page/schema/SKILL.md

schema-markup skillB

schema-markup is agent-read markdown (skill) from kostja94/marketing-skills: When the user wants to add or optimize structured data (Schema.org, JSON-LD). Also use when the user mentions "schema," "structured data," "JSON-LD," "rich results," "rich snippets," "Google rich snippets," "featured snippet schema," "add schema to page," "missing structured data," "schema validation error," "Schema Markup Validator," "Google Rich Results Test," "FAQ schema," "Article schema," "Organization schema," "JobPosting," "HowTo," "Event," "SoftwareApplication," "BreadcrumbList," "WebSit.

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/schema-markup@v1.5.0
Exact content
mdr add kostja94/marketing-skills/schema-markup@sha256:78262fdc41f54f1b

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_yzr2pibvvjlj25vy.svg)](https://markdownregistry.com/a/art_yzr2pibvvjlj25vy)

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Versions

versioncommittedcommitsizeaudit
v1.5.0 latest2026-05-05 c099845 20,041 BB view · diff
v1.4.02026-04-06 d6750d3 20,100 BB view · diff
v1.4.02026-03-27 f1ec9f7 19,930 BB view · diff
v1.3.02026-03-16 e878f71 19,786 BB view · diff
v1.2.02026-03-11 c7d87bd 18,636 BB view

Audit of the latest version

B  16 of 17 checks passed. Deterministic, no model, same answer every run.
  • 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 (20041 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

Source

GitHub

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

API

GET https://markdownregistry.com/api/v1/artifacts/art_yzr2pibvvjlj25vy
GET https://markdownregistry.com/api/v1/resolve?ref=kostja94/marketing-skills/schema-markup
GET https://markdownregistry.com/api/v1/blob/78262fdc41f54f1b542742ffb7fe138fd49c1a61be5d20d0660f516cf213ea9d

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