cover-thumbnail-brief

cover-thumbnail-brief is a skill for Claude Code from Ootto-AI/claude-content-skills. It costs 56 tokens per session (458 once invoked), scanned A, original, MIT.

A guide for choosing the short text and visual layout shown on a video reel's cover image. A reel is a short social-media video, and the cover is the preview people see before opening it.

In plain words
What is it for?
Use it to create cover-text options, describe the image composition, keep text in a safe area, match an existing grid, and check readability at thumbnail size.
Why use it?
It helps make the topic readable in a small grid or Explore preview, where unclear text can stop people from opening the video. It also accounts for areas covered by platform controls.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Part of the claude-content-skills plugin — 52 skills shipped together

Good fit Use it to create cover-text options, describe the image composition, keep text in a safe area, match an existing grid, and check readability at thumbnail size.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ootto-ai/claude-content-skills/cover-thumbnail-brief
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Ootto-AI/claude-content-skills --skill cover-thumbnail-brief
Clone the repo
git clone --depth 1 https://github.com/Ootto-AI/claude-content-skills

Made for: Claude Code.

Or install claude-content-skills, the plugin that ships this one along with the rest of its 52 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cover-thumbnail-brief

README.md
[![agentmods](https://agentmods.dev/badge/skills/ootto-ai/claude-content-skills/cover-thumbnail-brief/github.svg)](https://agentmods.dev/skills/ootto-ai/claude-content-skills/cover-thumbnail-brief)
Your own site
<a href="https://agentmods.dev/skills/ootto-ai/claude-content-skills/cover-thumbnail-brief"><img src="https://agentmods.dev/badge/skills/ootto-ai/claude-content-skills/cover-thumbnail-brief/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for cover-thumbnail-brief

Your own site · 80×15
<a href="https://agentmods.dev/skills/ootto-ai/claude-content-skills/cover-thumbnail-brief"><img src="https://agentmods.dev/badge/skills/ootto-ai/claude-content-skills/cover-thumbnail-brief.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 458 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00056 $0.00458
Opus 5 $0.00028 $0.00229
Sonnet 5 $0.00011 $0.00092
Haiku 4.5 $0.00006 $0.00046

Measured 12d ago against content hash 7bcf373ae5ed, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

cover-thumbnail-brief scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/cover-thumbnail-brief/SKILL.md · 49 lines

What it actually says

Cover & Thumbnail Brief — the frame that stops the scroll on the grid

Writes the cover-frame text and visual brief that makes your reel stop the scroll on the grid and in Explore.

When to use

The reel is made and the grid cover decides whether anyone opens it.

What you'll need

The reel topic or script, and a look at your current grid.

Instructions

Give Claude the input and run this.

You are my cover designer. Reel: [TOPIC/SCRIPT]. My grid currently looks like: [describe or paste].

1. COVER TEXT: 3-5 words max. Give me three options, ranked, each legible at thumbnail size.
2. VISUAL BRIEF: what's in frame, where the subject sits, the contrast that makes it pop in a feed.
3. SAFE AREA: keep text clear of the top ~12% and bottom ~20% — the platform covers those with its own UI.
4. GRID FIT: how it sits next to my last 8 covers — enough family resemblance to look intentional,
   enough contrast not to disappear.
5. TEST: describe it at 150px wide. If it's unreadable there, give me a simpler option.

Honesty: Legibility beats cleverness. A clever cover nobody can read at thumbnail size does not exist.

Next: caption-and-hashtags


Built by Ootto — the AI autopilot that connects your tools once and runs the busywork for you, automatically. Book a demo →

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 49 lines · 56 tokens per session scan A 7bcf373ae5ed

Subscribe to this mod's changes

cover-thumbnail-brief is a skill published in the GitHub repository Ootto-AI/claude-content-skills (30 stars, last pushed 20d ago), licensed MIT. It adds 56 tokens to every session and 458 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

scrapecreators-api

Scrape and extract public data from 27+ social media platforms using the ScrapeCreators REST API. Covers TikTok, Instagram, YouTube, LinkedIn, Facebook, Twitter/X, Reddit, Threads, Bluesky, Pinterest, Snapchat, Twitch, Kick, Truth Social, TikTok Shop, Google, and link-in-bio services (Linktree, Komi, Pillar, Linkbio…

ScrapeCreators/social-media-research-skills · 161 tokens

outlier-post-finder

Use when the user wants to find posts, videos, reels, shorts, tweets, or social content that overperformed versus a creator, brand, or competitor baseline. Finds outliers, explains why they worked, extracts hooks and formats, and produces a practical swipe file.

ScrapeCreators/social-media-research-skills · 60 tokens

ad-library-teardown

Use when the user wants to analyze active ads from Meta/Facebook, Google, or LinkedIn ad libraries; tear down a competitor's messaging; extract hooks, offers, CTAs, video transcripts, landing page claims, and test ideas from public ads.

ScrapeCreators/social-media-research-skills · 56 tokens

comment-mining

Use when the user wants to mine comments and replies for audience reactions, customer language, questions, objections, complaints, product ideas, buying intent, sentiment, or voice-of-customer insights from public social posts and videos.

ScrapeCreators/social-media-research-skills · 48 tokens

competitor-social-research

Use when the user wants to research competitors' social media strategy, compare brands or creators, find what content is working in a niche, identify content gaps, or produce a practical social strategy brief from public social data.

ScrapeCreators/social-media-research-skills · 49 tokens

transcript-intelligence

Use when the user wants to summarize, analyze, or repurpose transcripts from TikTok, Instagram, YouTube, Facebook, X/Twitter, LinkedIn, Rumble, or Reddit video posts. Extracts hooks, claims, quotes, content atoms, themes, and reusable scripts.

ScrapeCreators/social-media-research-skills · 62 tokens