AgentSkillsCN

nano-banana

使用 Google 的 Nano-Banana（Gemini 2.5 Flash Image）模型生成图像。适用于用户提出生成、创作或制作图像、照片或插画时使用。

SKILL.md
--- frontmatter
name: nano-banana
description: Generate images using Google's Nano-Banana (Gemini 2.5 Flash Image) model. Use when the user asks to generate, create, or make an image, picture, or illustration.
allowed-tools: Read, Bash

Nano-Banana Image Generation

Generate images using Google's Gemini Image models.

IMPORTANT: Enhance User Prompts

Before generating, always enhance the user's prompt using the techniques in PROMPTING.md.

Quick Enhancement Formula

[Subject] + [Style] + [Lighting] + [Composition] + [Quality]

Example Enhancement

  • •User says: "a cat"
  • •Enhanced: "A fluffy orange tabby cat with bright green eyes, photorealistic, soft natural window lighting, shallow depth of field, rule of thirds composition"

For detailed prompting techniques, templates, and style keywords, see PROMPTING.md.

Quick Start

bash
~/.claude/skills/nano-banana/scripts/generate.sh "your prompt here"

Options

OptionDescriptionDefault
--output PATHSave to specific file~/Pictures/nano-banana/<timestamp>.png
--size SIZEResolution: 1K, 2K, 4K1K
--aspect RATIOAspect ratio1:1
--flashUse Flash model (faster, lower quality)Pro

Aspect Ratios

1:1, 16:9, 9:16, 4:3, 3:4, 3:2, 2:3

Resolutions

  • •1K - Standard (default, fast)
  • •2K - High resolution (requires Pro model)
  • •4K - Maximum resolution (requires Pro model)

Interpreting User Requests

Parse the user's request and map to script options:

User saysScript call
"Generate a cat"generate.sh "a cat"
"Create a 4K image of mountains"generate.sh "mountains" --size 4K
"Make a landscape wallpaper"generate.sh "landscape" --aspect 16:9
"High quality portrait of a robot"generate.sh "portrait of a robot" --pro --aspect 3:4
"Generate a sunset, save to desktop"generate.sh "a sunset" --output ~/Desktop/sunset.png
"4K widescreen cyberpunk city"generate.sh "cyberpunk city" --size 4K --aspect 16:9

Keywords to watch for:

  • •Resolution: "4K", "high res", "high resolution", "2K", "large" → use --size
  • •Quality: "high quality", "detailed", "professional" → use --pro
  • •Orientation: "landscape", "widescreen", "wallpaper" → --aspect 16:9
  • •Orientation: "portrait", "vertical", "phone wallpaper" → --aspect 9:16
  • •Save location: "save to", "put it in", "output to" → --output

Behavior

  • •Runs in background (won't block Claude)
  • •Sends macOS notification when complete
  • •Auto-opens the image when done
  • •Images saved to ~/Pictures/nano-banana/ by default

Troubleshooting

Check the error log:

bash
cat ~/.claude/skills/nano-banana/last-error.log

Verify API key:

bash
security find-generic-password -a "$USER" -s "GEMINI_API_KEY" -w | head -c 10