MR
Mayur Rathi
@github
⭐ 34.1k GitHub stars

Nano-Banana-Pro-Openrouter

Nano-Banana-Pro-Openrouter是一款code方向的AI技能，核心价值是Generate or edit images via OpenRouter with the Gemini 3 Pro Image model，可用于解决开发者在code领域的实际问题，帮助用户提升效率、自动化重复任务或优化工作流。

Generate or edit images via OpenRouter with the Gemini 3 Pro Image model. Use for prompt-only image generation, image edits, and multi-image compositing; supports 1K/2K/4K output.

Last verified on: 2026-05-30
mkdir -p ./skills/nano-banana-pro-openrouter && curl -sfL https://raw.githubusercontent.com/github/awesome-copilot/main/skills/nano-banana-pro-openrouter/SKILL.md -o ./skills/nano-banana-pro-openrouter/SKILL.md

Run in terminal / PowerShell. Requires curl (Unix) or PowerShell 5+ (Windows).

Skill Content

# Nano Banana Pro OpenRouter


Overview


Generate or edit images with OpenRouter using the `google/gemini-3-pro-image-preview` model. Support prompt-only generation, single-image edits, and multi-image composition.


Prompt-only generation


text 
uv run {baseDir}/scripts/generate_image.py \
  --prompt "A cinematic sunset over snow-capped mountains" \
  --filename sunset.png

Edit a single image


text 
uv run {baseDir}/scripts/generate_image.py \
  --prompt "Replace the sky with a dramatic aurora" \
  --input-image input.jpg \
  --filename aurora.png

Compose multiple images


text 
uv run {baseDir}/scripts/generate_image.py \
  --prompt "Combine the subjects into a single studio portrait" \
  --input-image face1.jpg \
  --input-image face2.jpg \
  --filename composite.png

Resolution


- Use `--resolution` with `1K`, `2K`, or `4K`.

- Default is `1K` if not specified.


System prompt customization


The skill reads an optional system prompt from `assets/SYSTEM_TEMPLATE`. This allows you to customize the image generation behavior without modifying code.


Behavior and constraints


- Accept up to 3 input images via repeated `--input-image`.

- `--filename` accepts relative paths (saves to current directory) or absolute paths.

- If multiple images are returned, append `-1`, `-2`, etc. to the filename.

- Print `MEDIA: <path>` for each saved image. Do not read images back into the response.


Troubleshooting


If the script exits non-zero, check stderr against these common blockers:


| Symptom | Resolution |

|---------|------------|

| `OPENROUTER_API_KEY is not set` | Ask the user to set it. PowerShell: `$env:OPENROUTER_API_KEY = "sk-or-..."` / bash: `export OPENROUTER_API_KEY="sk-or-..."` |

| `uv: command not found` or not recognized | macOS/Linux: <code>curl -LsSf https://astral.sh/uv/install.sh &#124; sh</code>. Windows: <code>powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 &#124; iex"</code>. Then restart the terminal. |

| `AuthenticationError` / HTTP 401 | Key is invalid or has no credits. Verify at <https://openrouter.ai/settings/keys>. |


For transient errors (HTTP 429, network timeouts), retry once after 30 seconds. Do not retry the same error more than twice — surface the issue to the user instead.

🎯 Best For

  • Developers scaffolding new projects
  • Prototype builders
  • Claude users
  • GitHub Copilot users
  • Gemini users

💡 Use Cases

  • Bootstrapping React components
  • Creating API route handlers
  • Code quality improvement
  • Best practice enforcement

📖 How to Use This Skill

  1. 1

    Install the Skill

    Copy the install command from the Terminal tab and run it. The SKILL.md file downloads to your local skills directory.

  2. 2

    Load into Your AI Assistant

    Open Claude or GitHub Copilot and reference the skill. Paste the SKILL.md content or use the system prompt tab.

  3. 3

    Apply Nano-Banana-Pro-Openrouter to Your Work

    Open your project in the AI assistant and ask it to apply the skill. Start with a small module to verify the output quality.

  4. 4

    Review and Refine

    Review AI suggestions before committing. Run tests, check for regressions, and iterate on the skill output.

❓ Frequently Asked Questions

Can I customize the generated output?

Yes — modify the skill's prompt instructions to match your project conventions and coding style.

Is Nano-Banana-Pro-Openrouter compatible with Cursor and VS Code?

Yes — this skill works with any AI coding assistant including Cursor, VS Code with Copilot, and JetBrains IDEs.

Do I need specific dependencies for Nano-Banana-Pro-Openrouter?

Check the install command and Works With section. Most code skills only require the AI assistant and your codebase.

How do I install Nano-Banana-Pro-Openrouter?

Copy the install command from the Terminal tab and run it. The skill downloads to ./skills/nano-banana-pro-openrouter/SKILL.md, ready to use.

Can I customize this skill for my team?

Absolutely. Edit the SKILL.md file to add team-specific instructions, examples, or workflows.

⚠️ Common Mistakes to Avoid

Using generated code without understanding

Understand what generated code does before shipping it to production.

Skipping validation

Always test AI-generated code changes, even for simple refactors.

Missing dependency updates

Check if the skill requires updated dependencies or new packages.

🔗 Related Skills

00-andruia-consultant 00-andruia-consultant007 00710-andruia-skill-smith 10-andruia-skill-smith20-andruia-niche-intelligence 20-andruia-niche-intelligencea11y A11Yaccessibility Accessibility Expert