social-media-skills/skills · skills/thumbnail-design/SKILL.md

thumbnail-design skillA

thumbnail-design is agent-read markdown (skill) from social-media-skills/skills: Design YouTube video thumbnails that earn the click — mobile-legible, one focal point, honest. Use when someone wants to design a YouTube thumbnail, improve CTR, brief a thumbnail, choose thumbnail text, or plan thumbnail A/B testing. Designs and briefs high-CTR thumbnails and writes the A/B test plan: a thumbnail is a promise, not a poster, designed as a unit with the title and legible on mobile. Uses the CLICK framework. Reads brand-profile + the video/title first. A HUMAN or an image/design t.

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 social-media-skills/skills/thumbnail-design@v1.0.0
Exact content
mdr add social-media-skills/skills/thumbnail-design@sha256:1a9a4bf79eb4ba9c

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_zyq5unec4aomewvs.svg)](https://markdownregistry.com/a/art_zyq5unec4aomewvs)

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Versions

versioncommittedcommitsizeaudit
v1.0.0 latest2026-07-18 5222f27 6,654 BA view · diff
v1.0.02026-07-16 2e54555 6,893 BA view · diff
v1.0.02026-07-08 28a59a8 6,771 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 (6654 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

social-media-skills/skills · 89 stars · license MIT · pushed 2026-09-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_zyq5unec4aomewvs
GET https://markdownregistry.com/api/v1/resolve?ref=social-media-skills/skills/thumbnail-design
GET https://markdownregistry.com/api/v1/blob/1a9a4bf79eb4ba9c178659cd8309f4a38a9ff7cea13e1c64b3b214a418e4a262

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