nano-banana-pro

nano-banana-pro is a skill for Claude Code, Codex from trpc-group/trpc-agent-go. It costs 20 tokens per session (437 once invoked), scanned A, a copy of nano-banana-pro, Apache-2.0.

A tool for generating or editing images with Gemini 3 Pro Image, including single-image edits and compositions made from several images.

In plain words
What is it for?
Use it to generate new images, edit an existing image, combine multiple images, and save the result to a specified file.
Why use it?
It provides a scripted way to create or change bitmap images at selected resolutions.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for openclaw. Also seen: built for openclaw.

Good fit Use it to generate new images, edit an existing image, combine multiple images, and save the result to a specified file.

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Install with agentmods
npx agentmods add skills/trpc-group/trpc-agent-go/nano-banana-pro
About the project

tRPC-Agent-Go is a Go framework for building AI agent applications with language models, graph-based workflows, tools, memory, retrieval, evaluation, and observability. Go developers use it to create deployable agent systems that can integrate with A2A, AG-UI, and MCP. The catalogue add-ons provide reusable workflows and agent integrations for the framework.

trpc-group/trpc-agent-go · 1,776 stars · on GitHub · trpc-group.github.io

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 trpc-group/trpc-agent-go --skill nano-banana-pro
Clone the repo
git clone --depth 1 https://github.com/trpc-group/trpc-agent-go

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.

agentmods badge for nano-banana-pro

README.md
[![agentmods](https://agentmods.dev/badge/skills/trpc-group/trpc-agent-go/nano-banana-pro/github.svg)](https://agentmods.dev/skills/trpc-group/trpc-agent-go/nano-banana-pro)
Your own site
<a href="https://agentmods.dev/skills/trpc-group/trpc-agent-go/nano-banana-pro"><img src="https://agentmods.dev/badge/skills/trpc-group/trpc-agent-go/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.

agentmods 80×15 button for nano-banana-pro

Your own site · 80×15
<a href="https://agentmods.dev/skills/trpc-group/trpc-agent-go/nano-banana-pro"><img src="https://agentmods.dev/badge/skills/trpc-group/trpc-agent-go/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.

ModelPer sessionOnce 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 2026-09-11, 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.

openclaw/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.

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.

  1. 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 trpc-group/trpc-agent-go (1,776 stars, last pushed yesterday), licensed Apache-2.0. 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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