What is nano-banana-pro?

A tool for generating or editing bitmap images with Google's Gemini 3 Pro Image model, also called Nano Banana Pro.

Use it to generate an image, edit one existing image, or combine up to 14 images into a new composition.

It lets you create new images or change existing ones through written instructions rather than editing them manually.

nano-banana-pro — Skill for Claude Code and Codex by Vivek0712

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add Vivek0712/clawskills-strands --skill nano-banana-pro

Clone the repo

git clone --depth 1 https://github.com/Vivek0712/clawskills-strands

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/vivek0712/clawskills-strands/nano-banana-pro/github.svg)](https://agentmods.dev/skills/vivek0712/clawskills-strands/nano-banana-pro)

Your own site

<a href="https://agentmods.dev/skills/vivek0712/clawskills-strands/nano-banana-pro"><img src="https://agentmods.dev/badge/skills/vivek0712/clawskills-strands/nano-banana-pro/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/vivek0712/clawskills-strands/nano-banana-pro"><img src="https://agentmods.dev/badge/skills/vivek0712/clawskills-strands/nano-banana-pro.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 437 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin 89% copy Near-identical to another mod in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00020	$0.00437
Opus 5	$0.00010	$0.00218
Sonnet 5	$0.00004	$0.00087
Haiku 4.5	$0.00002	$0.00044

Measured 12d ago against content hash 9ab0838e959f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

nano-banana-pro scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/generate_image.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

89% identical to nano-banana-pro — 8 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/nano-banana-pro/SKILL.md · 59 lines

What it actually says

Nano Banana Pro (Gemini 3 Pro Image)

Use the bundled script to generate or edit images.

Generate

uv run {baseDir}/scripts/generate_image.py --prompt "your image description" --filename "output.png" --resolution 1K

Edit (single image)

uv run {baseDir}/scripts/generate_image.py --prompt "edit instructions" --filename "output.png" -i "/path/in.png" --resolution 2K

Multi-image composition (up to 14 images)

uv run {baseDir}/scripts/generate_image.py --prompt "combine these into one scene" --filename "output.png" -i img1.png -i img2.png -i img3.png

API key

GEMINI_API_KEY env var
Or set skills."nano-banana-pro".apiKey / skills."nano-banana-pro".env.GEMINI_API_KEY in ~/.openclaw/openclaw.json

Notes

Resolutions: 1K (default), 2K, 4K.
Use timestamps in filenames: yyyy-mm-dd-hh-mm-ss-name.png.
The script prints a MEDIA: line for OpenClaw to auto-attach on supported chat providers.
Do not read the image back; report the saved path only.

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

scripts/generate_image.py 6.4 KB runs code

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

12d ago First seen · 59 lines · 20 tokens per session scan A 9ab0838e959f

Subscribe to this mod's changes

nano-banana-pro is a skill published in the GitHub repository Vivek0712/clawskills-strands (9 stars, last pushed 7mo ago), licensed MIT. It adds 20 tokens to every session and 437 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 89% identical to nano-banana-pro, differing in 8 lines, and is treated as a copy.

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