Thumbnail Creator Skill (via Gemini)

Generates article and newsletter thumbnail candidates by acting as an image-generation agent inside Claude Code. Instead of switching between tools and prompting Gemini's web UI one image at a time, this skill makes Claude do the full loop: read the copy, propose compositions, write tailored prompts, call the Gemini API, evaluate the outputs, and return ranked results with brief rationale.

The output is production-ready thumbnail candidates you can drop directly into your CMS, newsletter tool, or social scheduler.