PaperclipOrg
Claude Agent Skill · by Github

Nano Banana Pro Openrouter

A straightforward wrapper around OpenRouter's Gemini 3 Pro Image model that handles the API calls and file management for you. Takes text prompts and optional i

Install
Terminal · npx
$npx skills add https://github.com/github/awesome-copilot --skill nano-banana-pro-openrouter
Works with Paperclip

How Nano Banana Pro Openrouter fits into a Paperclip company.

Nano Banana Pro Openrouter drops into any Paperclip agent that handles this kind of work. Assign it to a specialist inside a pre-configured PaperclipOrg company and the skill becomes available on every heartbeat — no prompt engineering, no tool wiring.

S
SaaS FactoryPaired

Pre-configured AI company — 18 agents, 18 skills, one-time purchase.

$27$59
Explore pack
Source file
SKILL.md74 lines
Expand
---name: nano-banana-pro-openrouterdescription: 'Generate or edit images via OpenRouter with the Gemini 3 Pro Image model. Use for prompt-only image generation, image edits, and multi-image compositing; supports 1K/2K/4K output.'metadata:  emoji: 🍌  requires:    bins:      - uv    env:      - OPENROUTER_API_KEY  primaryEnv: OPENROUTER_API_KEY---  # Nano Banana Pro OpenRouter ## Overview Generate or edit images with OpenRouter using the `google/gemini-3-pro-image-preview` model. Support prompt-only generation, single-image edits, and multi-image composition. ### Prompt-only generation ```uv run {baseDir}/scripts/generate_image.py \  --prompt "A cinematic sunset over snow-capped mountains" \  --filename sunset.png``` ### Edit a single image ```uv run {baseDir}/scripts/generate_image.py \  --prompt "Replace the sky with a dramatic aurora" \  --input-image input.jpg \  --filename aurora.png``` ### Compose multiple images ```uv run {baseDir}/scripts/generate_image.py \  --prompt "Combine the subjects into a single studio portrait" \  --input-image face1.jpg \  --input-image face2.jpg \  --filename composite.png``` ## Resolution - Use `--resolution` with `1K`, `2K`, or `4K`.- Default is `1K` if not specified. ## System prompt customization The skill reads an optional system prompt from `assets/SYSTEM_TEMPLATE`. This allows you to customize the image generation behavior without modifying code. ## Behavior and constraints - Accept up to 3 input images via repeated `--input-image`.- `--filename` accepts relative paths (saves to current directory) or absolute paths.- If multiple images are returned, append `-1`, `-2`, etc. to the filename.- Print `MEDIA: <path>` for each saved image. Do not read images back into the response. ## Troubleshooting If the script exits non-zero, check stderr against these common blockers: | Symptom | Resolution ||---------|------------|| `OPENROUTER_API_KEY is not set` | Ask the user to set it. PowerShell: `$env:OPENROUTER_API_KEY = "sk-or-..."` / bash: `export OPENROUTER_API_KEY="sk-or-..."` || `uv: command not found` or not recognized | macOS/Linux: <code>curl -LsSf https://astral.sh/uv/install.sh &#124; sh</code>. Windows: <code>powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 &#124; iex"</code>. Then restart the terminal. || `AuthenticationError` / HTTP 401 | Key is invalid or has no credits. Verify at <https://openrouter.ai/settings/keys>. | For transient errors (HTTP 429, network timeouts), retry once after 30 seconds. Do not retry the same error more than twice — surface the issue to the user instead.