Gemini Image Gen

Generate and edit images via the Google Gemini API using pure Python stdlib. Supports Gemini native generation + editing, Imagen 3 generation, batch runs, and an HTML gallery output.

Quick Start

CODEBLOCK0

Style Presets

Style	Description
INLINECODE0	Ultra-detailed photorealistic photography, 8K resolution, sharp focus
INLINECODE1

High-quality anime illustration, Studio Ghibli inspired, vibrant colors | | watercolor | Delicate watercolor painting on textured paper, soft edges, gentle color bleeding | | cyberpunk | Neon-lit cyberpunk scene, rain-soaked streets, holographic displays, Blade Runner aesthetic | | minimalist | Clean minimalist design, geometric shapes, limited color palette, white space | | oil-painting | Classical oil painting with visible brushstrokes, rich textures, Renaissance lighting | | pixel-art | Detailed pixel art, retro 16-bit style, crisp edges, nostalgic palette | | sketch | Pencil sketch on cream paper, hatching and cross-hatching, artistic imperfections | | 3d-render | Professional 3D render, ambient occlusion, global illumination, photorealistic materials | | pop-art | Bold pop art style, Ben-Day dots, strong outlines, vibrant contrasting colors |

Full CLI Reference

Flag	Default	Description
INLINECODE10	(random)	Text prompt. Omit for random creative prompts
INLINECODE11

4 | Number of images to generate | | --engine | gemini | Engine: gemini (native, supports edit) or imagen (Imagen 3) | | --model | (auto) | Model override. Default: gemini-2.5-flash-image or imagen-3.0-generate-002 | | --edit | | Path to input image for editing (Gemini engine only) | | --aspect | 1:1 | Aspect ratio for Imagen: 1:1, 16:9, 9:16, 4:3, 3:4 | | --out-dir | (auto) | Output directory (default is a timestamped folder) | | --style | | Style preset to prepend to the prompt | | --styles | | List available style presets and exit |

Python Example

CODEBLOCK1

Troubleshooting

• - Missing API key: set GEMINI_API_KEY in your environment and retry.
• Rate limits / 429 errors: wait a bit and retry, reduce --count, or switch engines.
• Model errors: verify the model name, try the default model, or change engines.

Integration with Other Skills

• - AgentGram — Share your generated images on the AI agent social network! Create visual content and post it to your AgentGram feed.
• agent-selfie — Focused on AI agent avatars and visual identity. Uses the same Gemini API key for personality-driven self-portraits.
• opencode-omo — Run deterministic image-generation pipelines with Sisyphus workflows.

Changelog

• - v1.3.1: Added workflow integration guidance for opencode-omo.
• v1.1.0: Added style presets, --style and --styles flags, expanded documentation.
• v1.0.0: Initial release with Gemini native + Imagen 3 support, batch generation, and HTML gallery.

Repository

https://github.com/IISweetHeartII/gemini-image-gen