VividKit Crystal clear AI coding
VI
Choose Your Setup Get Started with AgentKit Continue with ClaudeKit Migrate from ClaudeKit to AgentKit Clean cutover from ClaudeKit What Is AgentKit? How AgentKit Works AgentKit Kits, Skills, Agents & Hooks AgentKit Runtime Support AgentKit Desktop App AgentKit Configuration AgentKit CLI Quick Reference AgentKit Skills Cheatsheet AgentKit Workflows AgentKit Statusline Update AgentKit CLI & Kits AgentKit Helper Clean reinstall of AgentKit AgentKit Troubleshooting What is ClaudeKit? ClaudeKit CLI Guide Command Finder Commands Cheat Sheet Workflow Recipes CLI Quick Reference Claude Mechanics Permission Modes ClaudeKit Hooks Coexistence ClaudeKit x Codex CK → Other coding tools How ClaudeKit Works Inside ClaudeKit Finding Your Unknowns Session Recovery Fix from Logs UI/UX Guide Accounts Switcher IDE Config Remote Control Codex App System Diagramming UI Review Gate Promotions Support VividKit

Quick Ref / Command

Marketing Kit

/ak:youtube-thumbnail-design

CTR-optimized YouTube thumbnails

CTR-optimized YouTube thumbnail system with niche/style guidance, Gemini text-rendered generation, brand identity, references, faces, arrows, and variant iteration.

01

Gather

02

Research niche

03

Research style

04

Generate

Rule 01

Thumbnail text is tiny: 1–3 words, 25 characters max, rendered directly into the image.

Rule 02

CTR depends on clarity at small sizes, emotional faces when possible, strong contrast, and a simple 3-element composition.

Rule 03

Design is niche + style specific; do research before generation.

Rule 04

Do not fake YouTube UI elements like duration timestamps or play buttons.

Execution Map

Core lanes from input to output, aligned with the command's real execution path.

01

Start

Input, scope, route

  1. 1 Gather Ask for video topic, 1–3 word text, niche, style, brand/channel colors, reference face, and quantity.
  2. 2 Research niche Search niche-specific guidelines with a design brief tied to the video title.
02

Work

Agent / skill execution

  1. 3 Research style Search style recommendations and optionally research Pinterest references for the niche/style combination.
  2. 4 Generate Generate complete thumbnails with text baked in using Gemini Pro, single output, batch variants, reference face, arrows, brand colors, and quality presets as needed.
03

Verify

Gate, review, validation

  1. 5 Enforce specs Keep 1280×720, 16:9, max 2MB, readable at sidebar/mobile sizes, clear bottom-right duration badge dead zone.
  2. 6 Apply CTR rules Limit text to 3 words / 25 chars, use bold outlined type, faces when possible, rule of thirds, high contrast, 3 elements max, and no fake UI.
04

Close

Report, handoff, artifact

  1. 7 Present Show each option with style name, PNG preview, click rationale, and file path.
  2. 8 Iterate Revise from user feedback until approved, then keep outputs under the assets/thumbnails/{video-slug}/ convention.

Special Operations

Batch variants

Default quantity is 3; batch generation supports side-by-side creative options before user approval.

Reference face

Use a provided headshot/photo when consistent presenter identity matters.

Quality presets

Fast is for testing, normal is the balanced default, and ultra is for final 4K-sharp assets.

Sample Prompt

Concrete invocations for each flag, subcommand, mode, or route available in the live workflow.

Tech facecam Recommended 
/ak:youtube-thumbnail-design tech facecam
Use when:
Use for a tech video thumbnail with presenter/emotion emphasis.
Expected:
Niche/style-guided thumbnail variants with short baked-in text and CTR rationale.
Education diagram 
/ak:youtube-thumbnail-design education diagram
Use when:
Use for explanatory videos where the visual concept matters more than a face.
Expected:
Diagram-style thumbnail options readable at mobile and sidebar sizes.
Cooking mystery 
/ak:youtube-thumbnail-design cooking mystery
Use when:
Use for reveal, secret, or curiosity-driven content.
Expected:
High-contrast mystery style with simple composition and no fake UI.

Handled Scope

  • CTR-oriented art direction
  • Niche/style thumbnail systems
  • Gemini text-rendered generation
  • Brand and face/reference consistency
  • Variant presentation and iteration

Artifacts Produced

Thumbnail options

Pattern

assets/thumbnails/{video-slug}/thumb_{style}_{nn}.png

Each option includes preview, art direction, CTR rationale, and file path.

Related skills

Next