Nano Banana
kkoppenhaver/cc-nano-banana
REQUIRED for all image generation requests. An agent skill from kkoppenhaver/cc-nano-banana.
REQUIRED for all image generation requests. An agent skill from jh941213/my-cc-harness.
Install Nano Banana
$ npx skills add jh941213/my-cc-harness --skill nano-banana -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install jh941213/my-cc-harness nano-banana --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/jh941213/my-cc-harness.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/nano-banana .claude/skills/nano-banana && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "nano-banana" agent skill from https://github.com/jh941213/my-cc-harness/tree/main/skills/nano-banana into .claude/skills/nano-banana/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nano-banana", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/jh941213/my-cc-harness/tree/main/skills/nano-bananaType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add jh941213/my-cc-harness --skill nano-banana -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install jh941213/my-cc-harness nano-banana --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jh941213/my-cc-harness.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/nano-banana .agents/skills/nano-banana && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "nano-banana" agent skill from https://github.com/jh941213/my-cc-harness/tree/main/skills/nano-banana into .agents/skills/nano-banana/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nano-banana", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add jh941213/my-cc-harness --skill nano-banana -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install jh941213/my-cc-harness nano-banana --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jh941213/my-cc-harness.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/nano-banana .cursor/skills/nano-banana && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "nano-banana" agent skill from https://github.com/jh941213/my-cc-harness/tree/main/skills/nano-banana into .cursor/skills/nano-banana/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nano-banana", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/jh941213/my-cc-harness.git --path skills/nano-banana--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add jh941213/my-cc-harness --skill nano-banana -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install jh941213/my-cc-harness nano-banana --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jh941213/my-cc-harness.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/nano-banana .gemini/skills/nano-banana && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "nano-banana" agent skill from https://github.com/jh941213/my-cc-harness/tree/main/skills/nano-banana into .gemini/skills/nano-banana/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nano-banana", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install jh941213/my-cc-harness nano-bananaInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add jh941213/my-cc-harness --skill nano-banana -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/jh941213/my-cc-harness.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/nano-banana .github/skills/nano-banana && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "nano-banana" agent skill from https://github.com/jh941213/my-cc-harness/tree/main/skills/nano-banana into .github/skills/nano-banana/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nano-banana", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add jh941213/my-cc-harness --skill nano-banana -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install jh941213/my-cc-harness nano-banana --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jh941213/my-cc-harness.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/nano-banana .opencode/skills/nano-banana && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "nano-banana" agent skill from https://github.com/jh941213/my-cc-harness/tree/main/skills/nano-banana into .opencode/skills/nano-banana/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nano-banana", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
nano-banana- GitHub stars
- 125
- Token cost
- ~1k tokens
- SKILL.md length
- 442 words
- Files
- 1
- Skills in repo
- 62
- Repo updated
- First seen
- Licence
- None found
At a glance
REQUIRED for all image generation requests. An agent skill from jh941213/my-cc-harness.
- Works in 4 steps: 출력 경로 결정 → 프롬프트 최적화 → 생성 실행 → …
- The user asks to create
- SKILL.md covers 모델 선택, When to Use This Skill, 사전 준비 and 이미지 생성 (Gemini CLI — 기본 방법), plus 5 more sections
- Calls gemini, npm and brew
What it does
Nano Banana is an agent skill from jh941213/my-cc-harness. REQUIRED for all image generation requests. Generate and edit images using Gemini CLI with image models. Handles blog featured images, YouTube thumbnails, icons, diagrams, patterns, illustrations, photos, visual assets, graphics, artwork, pictures. Use this skill whenever the user asks to create, generate, make, draw, design, or edit any image or visual content.
Its SKILL.md is about 1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Media & Creative, covering Image generation, Diagrams and Image editing. It works with Google Gemini and YouTube.
When your agent uses it
- The user asks to create
- Tasks that involve Image generation
- Tasks that involve Diagrams
Example prompts
- “/nano-banana”
Requirements
- Node.js
- Pre-approved tools (allowed-tools): Bash(gemini:*), Read
Workflow steps
4 steps, taken from the step headings in SKILL.md.
- 출력 경로 결정
- 프롬프트 최적화
- 생성 실행
- 결과 확인
What it can do on your machine
Read from SKILL.md and the folder at commit e9210e2. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
Bash(gemini:*)Read
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
gemininpmbrew
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npm, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Nano Banana loads about 1k tokens when it runs. Until then it costs about 94 tokens; SKILL.md has 442 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 442 words (~1,041 tokens).
“Gemini CLI + 이미지 모델로 프로페셔널 이미지를 생성합니다. Google 계정 인증 기반 — API 키 불필요. 512px~4K, 다양한 종횡비, 다국어 텍스트 렌더링 지원.”
- name
- nano-banana
- allowed-tools
- Bash(gemini:*), Read
- user-invocable
- true
Files
Just SKILL.md in skills/nano-banana of jh941213/my-cc-harness.
Open the folder on GitHubat commit e9210e2
Compare with similar skills
Nano Banana next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Nano Banana this skilljh941213/my-cc-harness | 125 | — | ~1k | Automated safety check: Pass | None | |
| Nano Bananakkoppenhaver/cc-nano-banana | 378 | 1 repos | ~1.4k | Automated safety check: Pass | MIT | |
| FigureMuuuun/luxas | 1.2k | — | ~1.2k | Automated safety check: Pass | MIT | |
| Nano Bananaglebis/claude-skills | 391 | — | ~2.1k | Automated safety check: Pass | MIT | |
| AI MultimodalMicrock/ordinary-claude-skills | 404 | — | ~2.7k | Automated safety check: Notes | MIT | |
| Generate ImageK-Dense-AI/claude-scientific-writer | 2.4k | 1 repos | ~3.8k | Automated safety check: Notes | MIT |
Similar skills
Figure
Muuuun/luxas
Hybrid figure pipeline (Nano Banana raster + rembg background removal + TikZ vector assembly).
Nano Banana
glebis/claude-skills
Generate and edit images using Google's Gemini image generation models (Nano Banana family).
AI Multimodal
Microck/ordinary-claude-skills
Process and generate multimedia content using Google Gemini API.
Generate Image
K-Dense-AI/claude-scientific-writer
Generate or edit images with AI models through the OpenRouter Image API (Gemini, Seedream, Recraft, GPT-Image, Riverflow).
Nanobanana Skill
feiskyer/claude-code-settings
Generate or edit images via Google Gemini (nanobanana). An agent skill from feiskyer/claude-code-settings.
More from jh941213/my-cc-harness
All 62 skills in this repoAPI Design Principles
jh941213/my-cc-harness
REST 및 GraphQL API 설계 원칙 가이드. An agent skill from jh941213/my-cc-harness.
Tailwind Design System
jh941213/my-cc-harness
Build scalable design systems with Tailwind CSS, design tokens, component libraries, and responsive patterns.
Docs Architecture
jh941213/my-cc-harness
Generate/update architecture docs — ARCHITECTURE.md (codemap), architecture diagrams (C4 mermaid), ADRs (MADR), data model ERD.
Auto Memory
jh941213/my-cc-harness
A skill your agent uses when starting substantial work in a repo (implementation, fixes, deploys, debugging), when first exploring a new repo, or when finishing work that produced reusable knowledge.
Async Python Patterns
jh941213/my-cc-harness
Python asyncio 및 async/await 패턴 가이드. An agent skill from jh941213/my-cc-harness.
Python Testing Patterns
jh941213/my-cc-harness
Implement comprehensive testing strategies with pytest, fixtures, mocking, and test-driven development.
Related
Works with
Categories
Questions about Nano Banana
What does Nano Banana do?
REQUIRED for all image generation requests. An agent skill from jh941213/my-cc-harness. Nano Banana is an agent skill from jh941213/my-cc-harness. REQUIRED for all image generation requests.
When should I use Nano Banana?
Nano Banana fits situations like: the user asks to create; tasks that involve Image generation; tasks that involve Diagrams.
How do I install Nano Banana in Claude Code?
Run `npx skills add jh941213/my-cc-harness --skill nano-banana -a claude-code`. Or copy the skill folder (skills/nano-banana in jh941213/my-cc-harness) into .claude/skills/nano-banana in your project. Claude Code loads it when a task matches its description.
How do I install Nano Banana in Codex?
Run `npx skills add jh941213/my-cc-harness --skill nano-banana -a codex`. Or copy the skill folder (skills/nano-banana in jh941213/my-cc-harness) into .agents/skills/nano-banana in your project. Codex loads it when a task matches its description.
Can I use Nano Banana in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jh941213/my-cc-harness --skill nano-banana -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/nano-banana, .gemini/skills/nano-banana, .github/skills/nano-banana and .opencode/skills/nano-banana in your project.
What does Nano Banana need to run?
Going by SKILL.md and its folder, Nano Banana needs the command-line tools its instructions call (gemini, npm and brew). Our summary lists: Node.js. Its frontmatter pre-approves these tools: Bash(gemini:*), Read.
Does Nano Banana access the network?
SKILL.md contains no URLs. Its commands use npm, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Nano Banana safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Nano Banana use?
No licence was found for Nano Banana or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Nano Banana use?
About 1k tokens (SKILL.md is roughly 4.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Nano Banana?
Skills that share tags, products or a category with Nano Banana: Nano Banana (kkoppenhaver/cc-nano-banana, 378 stars), Figure (Muuuun/luxas, 1.2k stars), Nano Banana (glebis/claude-skills, 391 stars) and AI Multimodal (Microck/ordinary-claude-skills, 404 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Nano Banana?
jh941213 (a GitHub user) maintains it in jh941213/my-cc-harness, which has 125 GitHub stars. The repository holds 62 skills in this directory. The repository was last updated on August 3, 2026.
Source: jh941213/my-cc-harness on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.