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twitter-cards SKILL.md skillA

twitter-cards from kostja94/marketing-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add kostja94/marketing-skills/twitter-cards@v2.0.0

Pins v2.0.0 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: kostja94/marketing-skills
Path: skills/seo/on-page/twitter-cards/SKILL.md
Versions recorded: 6
Latest version: v2.0.0, committed Oct 5, 2026
First version recorded: Feb 28, 2026
Size: 4,787 bytes
Repository stars: 1,089
License: MIT

When the user wants to add, audit, implement, or optimize Twitter Card metadata for X link previews, including twitter:card, twitter:title, twitter:description, twitter:image, or X previews. For a full metadata lifecycle use page-metadata; for broader social previews use open-graph.

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 On-Page: Twitter Cards

Owns X/Twitter Card writing and implementation rules. **page-metadata** owns the full-page lifecycle and release verification. Platforms may use Open Graph fallbacks, so define X-specific copy only when it adds value.

**When invoking**: On **first use**, if helpful, open with 1–2 sentences on what this skill covers and why it matters, then provide the main output. On **subsequent use** or when the user asks to skip, go directly to the main output.

## Scope (Social Sharing)

- **Twitter Cards**: X-specific meta tags; control how links appear when shared on X/Twitter

## Card Types

| Type | Use case |
|------|----------|
| **summary** | Small card with thumbnail |
| **summary_large_image** | Large prominent image (recommended; 1200×675px) |
| **app** | Mobile app promotion |
| **player** | Video/audio content |

## Recommended Tags (summary_large_image)

```html
<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:title" content="Your Title">
<meta name="twitter:description" content="Your description">
<meta name="twitter:image" content="https://example.com/image.jpg">
<meta name="twitter:site" content="@yourusername">
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add kostja94/marketing-skills/twitter-cards@sha256:2fb1b120c06062e6

The line at the top of this page pins the label v2.0.0, 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.

Badge

[![mdr](https://markdownregistry.com/badge/art_szlaof65su3d5vxm.svg)](https://markdownregistry.com/a/art_szlaof65su3d5vxm)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 6 versions of this file, between Feb 28, 2026 and Oct 5, 2026, about one every 44 days.

version	committed	commit	size	audit
v2.0.0 latest	2026-10-05	9921b6b	4,787 B	A	view · diff
v1.1.0	2026-06-01	9ea25f3	4,221 B	A	view · diff
v1.1.0	2026-03-27	f1ec9f7	3,845 B	A	view · diff
v1.0.0	2026-02-28	b615388	3,797 B	A	view · diff
v1.0.0	2026-02-28	f71005e	3,780 B	A	view · diff
v1.0.0	2026-02-28	932fee7	3,823 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the 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 (4787 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 · 1,089 stars · license MIT · pushed 2026-11-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_szlaof65su3d5vxm
GET https://markdownregistry.com/api/v1/resolve?ref=kostja94/marketing-skills/twitter-cards
GET https://markdownregistry.com/api/v1/blob/2fb1b120c06062e642ae93a844dd30eca2acaeca304057fd28bc837fc8e948d5

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.

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