google-image-gen

Google Image Generation Skill

Generate images from text prompts using Google's Gemini API.

First-Time Setup (Once Per Context)

Run these commands once at the start of a session:

${CLAUDE_PLUGIN_ROOT}/scripts/check_env.sh
cd ${CLAUDE_PLUGIN_ROOT} && uv sync && cd -

If the environment check fails, the user needs to configure their API key. Recommended: Create ~/.config/google-image-gen/.env with:

GOOGLE_AI_API_KEY=your_key_here

Get an API key from https://aistudio.google.com/apikey

Alternative: Export as environment variable: export GOOGLE_AI_API_KEY=your_key

Usage

Important: The plugin runs from its own directory. Use --cwd to ensure output files land in the user's project, not the plugin cache.

ORIG_CWD="$(pwd)" && cd ${CLAUDE_PLUGIN_ROOT} && uv run python main.py --cwd "$ORIG_CWD" <output_path> "<prompt>" [options]

Note: When the user specifies a path like output.png or images/photo.png, pass it as-is — the --cwd parameter ensures it resolves relative to the user's project root.

Options

Option	Short	Description
--style	-s	Style template (.md file with {subject} placeholder)
--ref	-r	Reference image for style (repeatable, max 14)
--edit	-e	Edit existing image instead of generating
--aspect	-a	Aspect ratio: 1:1, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9

Examples

Simple Generation

ORIG_CWD="$(pwd)" && cd ${CLAUDE_PLUGIN_ROOT} && uv run python main.py --cwd "$ORIG_CWD" output.png "A red apple on a wooden table"

Save to subdirectory

ORIG_CWD="$(pwd)" && cd ${CLAUDE_PLUGIN_ROOT} && uv run python main.py --cwd "$ORIG_CWD" images/output.png "A red apple"

With Aspect Ratio

ORIG_CWD="$(pwd)" && cd ${CLAUDE_PLUGIN_ROOT} && uv run python main.py --cwd "$ORIG_CWD" thumb.png "Mountain landscape" --aspect 16:9

Edit Existing Image

ORIG_CWD="$(pwd)" && cd ${CLAUDE_PLUGIN_ROOT} && uv run python main.py --cwd "$ORIG_CWD" output.png "Change the sky to sunset" --edit input.png

With Reference Image

ORIG_CWD="$(pwd)" && cd ${CLAUDE_PLUGIN_ROOT} && uv run python main.py --cwd "$ORIG_CWD" output.png "Same style but with a car" --ref reference.png

Multiple Variations

Generates numbered outputs (output_1.png, output_2.png, etc.):

ORIG_CWD="$(pwd)" && cd ${CLAUDE_PLUGIN_ROOT} && uv run python main.py --cwd "$ORIG_CWD" output.png "cat" "dog" "bird"

Workflow

1. First use in context: Run setup commands (check_env.sh + uv sync)
2. Generate images as needed
3. Report output paths to user

Notes

• Paid API tier recommended (free tier has strict rate limits)
• Output directories are created automatically
• Default aspect ratio is 16:9