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nanobanana

@joshp123/ai-stack
3
0

Edit images with Gemini using the nanobanana CLI. Use when the user asks to transform or retouch images and wants concrete output files.

Install Skill

1Download skill
2Enable skills in Claude

Open claude.ai/settings/capabilities and find the "Skills" section

3Upload to Claude

Click "Upload skill" and select the downloaded ZIP file

Note: Please verify skill by going through its instructions before using it.

SKILL.md

name nanobanana
description Edit images with Gemini using the nanobanana CLI. Use when the user asks to transform or retouch images and wants concrete output files.

This skill uses the nanobanana CLI (Gemini image editing) to apply prompt-based edits to images.

When to Use

  • The user wants an image edited (remove objects, change background, stylize, improve, etc.).
  • The workflow needs a real output file (PNG/JPEG) to show or further process.

Requirements

  • nanobanana CLI installed via Nix (no global pip/uv installs).
  • GEMINI_API_KEY provided via agenix (/run/agenix/gemini-api-key). The CLI wrapper auto-loads this if the env var is not set.

Workflow

  1. Ask for the input image path and the edit prompt.
  2. If no output path is provided, let the CLI generate <input>_edited.<ext>.
  3. Run:
    nanobanana <image-path> "<prompt>" [output-path]
  4. Confirm the output file exists and report its path.

Notes

  • The model may upsample images (outputs are often 1024x1024 or larger).
  • Keep prompts short and specific. If the result is off, iterate with a refined prompt.
  • Use /tmp for temporary inputs and outputs unless the user requests otherwise.