novoads/agent-skills · skills/generate-youtube-thumbnail/SKILL.md

generate-youtube-thumbnail skillA

generate-youtube-thumbnail is agent-read markdown (skill) from novoads/agent-skills: Generate high-CTR YouTube thumbnails using Nano Banana Pro via the Novoads API. Handles reference image upload, character likeness alignment, proven CTR-tested prompt formulas, and bounded batch generation. Use when the user asks to create a YouTube thumbnail, video thumbnail, A/B test thumbnail variations, or refers to thumbnail design with their face, brand assets, or product photos..

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 novoads/agent-skills/generate-youtube-thumbnail@git:20260910.cd04517
Exact content
mdr add novoads/agent-skills/generate-youtube-thumbnail@sha256:6c79446435eb388a

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_kctxpsurokhto3s7.svg)](https://markdownregistry.com/a/art_kctxpsurokhto3s7)

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Versions

versioncommittedcommitsizeaudit
git:20260910.cd04517 latest2026-09-10 cd04517 14,795 BA view · diff
git:20260814.0cfabea2026-08-14 0cfabea 14,784 BA view · diff
git:20260814.62e1e322026-08-14 62e1e32 14,787 BA view · diff
git:20260814.227c71d2026-08-14 227c71d 14,787 BA view · diff
git:20260813.5c277a42026-08-13 5c277a4 14,422 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 (14795 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

novoads/agent-skills · 14 stars · license MIT · pushed 2026-09-10 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_kctxpsurokhto3s7
GET https://markdownregistry.com/api/v1/resolve?ref=novoads/agent-skills/generate-youtube-thumbnail
GET https://markdownregistry.com/api/v1/blob/6c79446435eb388a41226df6d1f6367b6319b139845ed964d15d91d47e741894