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Choose a skill
Design an original poster, cover or social graphic in a bold modular style: a square grid of flat geometric shapes in a few strong colours around your exact text, as an editable SVG and PNG.
Personalize it
Be clear about what a useful result looks like.
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Review your file
Check your additions, then compare them with the original instructions. Both will be included in your download.
Copy and download always include the full file: original instructions plus your additions.
Save & try it
Choose your agent for setup steps and a trial prompt. Check the skill requirements for any extra tools it needs.
Install and run a sample
- Download your customized SKILL.md. This library skill is a single file.
- Create the skill folder in your project and save the download at
.agents/skills/visual-design/SKILL.md. Follow the skill’s setup steps for any plugins or tools. - Open Codex in that project. Start a new session, paste the trial prompt, and review the result.
This tool checks the file name, required fields, and size. It does not fully validate YAML or test how well the skill works. Try the sample before using it for real work.
- Load the original SKILL.md to continue.