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nano-banana
Converts plain English descriptions into structured JSON schemas for Nano Banana Pro image generation, supporting marketing images, UI mockups, diagrams, data visualizations, and social graphics.
What's Inside
README
Nano Banana Pro JSON Prompt Translator
Stop rolling dice. Start turning dials.
This repository contains a Claude Code slash command that translates natural language descriptions into structured JSON schemas for Nano Banana Pro (Gemini 3 Pro Image).
What It Does
Instead of writing vague prompts and hoping for the best, the translator helps you build precise specifications where every element - lighting, camera angle, composition, props - lives on its own "fader." Change one thing without affecting everything else.
Supported schema types:
- Marketing Images - Product shots, hero images, brand photography
- UI/UX Mockups - App screens, dashboards, websites
- Diagrams - Flowcharts, architecture diagrams, process maps
- Data Visualizations - Charts, graphs with accurate data
- Social Graphics - Platform-specific social media content
Installation
From GitHub (Recommended)
First, add the marketplace to Claude Code:
/plugin marketplace add https://github.com/jawhnycooke/claude-code-nano-banana
Then install the plugin:
/plugin
Follow these steps:
- Select
1. Browse and install plugins - Select marketplace
claude-code-nano-banana - Press the
Space barto selectnano-banana - Press
ito install /exitClaude code and restart
This installs the plugin directly from this repository.
Usage
Invoke the command with a rough description:
/nano-banana vinyl record product shot, moody lighting, vintage feel
The translator will ask clarifying questions, then output a complete JSON specification ready to paste into Nano Banana Pro.
Tutorial
See the full tutorial: Dials, Not Dice: A Precision Prompting Guide for Nano Banana Pro and Claude Code
The examples/vinyl-record-tutorial/ folder contains the JSON files from the tutorial so you can follow along.
Contact
For questions, issues, or contributions, contact: [email protected]
License
MIT
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Version1.0.0
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MaintenanceGood
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