youtube-thumbnail SKILL.md skillA
youtube-thumbnail from alebgl77/claude-inc is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add alebgl77/claude-inc/youtube-thumbnail@git:20260711.13c718dPins git:20260711.13c718d in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- alebgl77/claude-inc
- Path
skills/youtube-thumbnail/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260711.13c718d, committed Jul 11, 2026
- Size
- 4,157 bytes
- Repository stars
- 22
- License
- MIT
Designs and tests YouTube thumbnails — 3–5 concept briefs covering composition, face or object, a 3-word-max overlay, and colour contrast against YouTube's UI, each run through a curiosity check, a mobile legibility test at 168×94 px, and a /10 scoring rubric, ending in a verdict and an A/B rotation plan. Generates mockups when an image tool is available. Use when the user says "thumbnail ideas for this video", "which cover wins?", "my CTR is stuck at 3%", or "test these two thumbnails".
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
# YouTube Thumbnail — Cover Tester > "Test thumbnail covers" ## When to use - "Thumbnail ideas for my video about <topic>." - "Which of these two covers should I use?" — a scored verdict, not a shrug. - CTR is flat and packaging is the suspect: "my CTR is stuck at 3%." - Pre-production: designing title + thumbnail as one package before filming. ## Workflow 1. Get the inputs: video topic, the exact title, the target viewer, and where the impressions come from (browse, suggested, search) — thumbnails compete differently on each surface. 2. Define the ONE emotion or question the thumbnail must trigger. The thumbnail asks a question the title answers (or the reverse) — the two must never repeat each other. 3. Draft 3–5 concept briefs. Each specifies composition (focal point on a rule-of-thirds intersection), face or object (expression, prop, angle), a text overlay of three words or fewer (or none), and a palette with deliberate contrast against YouTube's white/dark UI and red accents. 4. Curiosity-check each concept: does it open a loop the title closes? Does it spoil the payoff? Does it still make sense with the title covered? …
Read the whole file at its exact version.
How to install
mdr add alebgl77/claude-inc/youtube-thumbnail@sha256:5d802bc426c92474The line at the top of this page pins the label git:20260711.13c718d, 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_yvuiyp42cgbcrgxn)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 11, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4157 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
alebgl77/claude-inc · 22 stars · license MIT · pushed 2026-10-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_yvuiyp42cgbcrgxn GET https://markdownregistry.com/api/v1/resolve?ref=alebgl77/claude-inc/youtube-thumbnail GET https://markdownregistry.com/api/v1/blob/5d802bc426c9247447c83a3d871f284ef8feddaad54b522dcbf41c7f126af9c6
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.
More from alebgl77/claude-inc
Every file in alebgl77/claude-inc