Banner Creator
Banner Creator is an agent skill (a SKILL.md file) from ReScienceLab/opc-skills. Create banners using AI image generation. It works with Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot and OpenCode and has 1,843 GitHub stars across a repository of 2 listed skills.
github.com/ReScienceLab/opc-skills/skills/banner-creator (opens in a new tab)
- Multi-skill repo
- Plugin marketplace
- Needs API key
- Docs & writing
- Actively maintained
Add this skill
Claude
This repository is a Claude Code plugin marketplace. In Claude Code:
/plugin marketplace add ReScienceLab/opc-skills
/plugin install banner-creator@opc-skillsIn the Claude apps, zip the banner-creator folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).
ChatGPT / Codex
Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:
git clone --depth 1 https://github.com/ReScienceLab/opc-skills.git
cp -r opc-skills/skills/banner-creator .agents/skills/banner-creator # repo; ~/.agents/skills for all projectsStandalone skills also load in the ChatGPT desktop app.
Cursor
Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:
git clone --depth 1 https://github.com/ReScienceLab/opc-skills.git
cp -r opc-skills/skills/banner-creator .cursor/skills/banner-creator # project; ~/.cursor/skills for all projectsSource (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), code.claude.com/docs/en/plugin-marketplaces (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)
What this skill does
Create banners using AI image generation. Discuss format/style, generate variations, iterate with user feedback, crop to target ratio. Use when user wants to create a banner, header, hero image, cover image, GitHub banner, Twitter header, or readme banner. Create professional banners through AI image generation with an iterative design process.
When it triggers
- Use when user wants to create a banner, header, hero image, cover image, GitHub banner, Twitter header, or readme banner.
More skills in ReScienceLab/opc-skills
2 skills are listed from this repository.
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What is the Banner Creator skill?
Banner Creator is an agent skill (a SKILL.md file) from ReScienceLab/opc-skills. Create banners using AI image generation. It works with Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot and OpenCode and has 1,843 GitHub stars across a repository of 2 listed skills. Its SKILL.md lives at github.com/ReScienceLab/opc-skills/skills/banner-creator.
How do I install the Banner Creator skill?
In Claude Code, run /plugin marketplace add ReScienceLab/opc-skills and then /plugin install banner-creator@opc-skills. For Codex or Cursor, copy the banner-creator folder into .agents/skills/ or .cursor/skills/.
Is the Banner Creator skill free?
Yes. The repository is open source under the Apache-2.0 license. The skill mentions an API key or token for an external service, which may need its own account.
Is Banner Creator maintained?
The repository's most recent commit was on Oct 6, 2026. Its latest release is v1.0.10. appsgit only lists skills from repositories with a commit in the last six months.