OPC Skills is a collection of reusable instruction folders, scripts, and resources that extend coding agents with specialized tasks for solopreneurs and one-person companies. Its skills cover areas such as search optimization, demand research, domain discovery, branding, social-media assets, and platform-specific research. The catalogue entries are the project's own skills, plugins, and hook.
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.
npx skills add ReScienceLab/opc-skills --skill nanobananagit clone --depth 1 https://github.com/ReScienceLab/opc-skillsWrote 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.
[](https://agentmods.dev/skills/resciencelab/opc-skills/nanobanana)<a href="https://agentmods.dev/skills/resciencelab/opc-skills/nanobanana"><img src="https://agentmods.dev/badge/skills/resciencelab/opc-skills/nanobanana/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.
<a href="https://agentmods.dev/skills/resciencelab/opc-skills/nanobanana"><img src="https://agentmods.dev/badge/skills/resciencelab/opc-skills/nanobanana.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector pass
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 | $0.00065 | $0.01352 |
| Opus 5 | $0.00032 | $0.00676 |
| Sonnet 5 | $0.00013 | $0.00270 |
| Haiku 4.5 | $0.00006 | $0.00135 |
Grade A, and why
nanobanana 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 10d ago.
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.
How it starts
The opening of the file, as written. The whole thing — 202 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Nano Banana - AI Image Generation
Generate and edit images using Google's Gemini 3 Pro Image model (gemini-3-pro-image-preview, nicknamed "Nano Banana Pro" 🍌).
Prerequisites
Required:
GEMINI_API_KEY- Get from Google AI Studio- Python 3.10+ with
google-genaipackage
Install dependencies:
pip install google-genai pillow
Quick Start
Generate an image:
python3 <skill_dir>/scripts/generate.py "a cute robot mascot, pixel art style" -o robot.png
Edit an existing image:
python3 <skill_dir>/scripts/generate.py "make the background blue" -i input.jpg -o output.png
Generate with specific aspect ratio:
python3 <skill_dir>/scripts/generate.py "cinematic landscape" --ratio 21:9 -o landscape.png
Generate high-resolution 4K image:
python3 <skill_dir>/scripts/generate.py "professional product photo" --size 4K -o product.png
Script Reference
scripts/generate.py
Main image generation script.
Usage: generate.py [OPTIONS] PROMPT
Arguments:
PROMPT Text prompt for image generation
Options:
-o, --output PATH Output file path (default: auto-generated)
-i, --input PATH Input image for editing (optional)
-r, --ratio RATIO Aspect ratio (1:1, 16:9, 9:16, 21:9, etc.)
-s, --size SIZE Image size: 2K or 4K (default: standard)
--search Enable Google Search grounding for accuracy
-v, --verbose Show detailed output
Supported aspect ratios:
1:1- Square (default)2:3,3:2- Portrait/Landscape3:4,4:3- Standard4:5,5:4- Photo9:16,16:9- Widescreen21:9- Ultra-wide/Cinematic
scripts/batch_generate.py
Generate multiple images with sequential naming.
Usage: batch_generate.py [OPTIONS] PROMPT
Arguments:
PROMPT Text prompt for image generation
Options:
-n, --count N Number of images to generate (default: 10)
-d, --dir PATH Output directory
-p, --prefix STR Filename prefix (default: "image")
-r, --ratio RATIO Aspect ratio
-s, --size SIZE Image size (2K/4K)
--delay SECONDS Delay between generations (default: 3)
What ships with it
4 files 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.
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.
- 10d ago First seen · 202 lines · 65 tokens per session scan A 908d7922615b
nanobanana is a skill published in the GitHub repository ReScienceLab/opc-skills (1,768 stars, last pushed yesterday), licensed Apache-2.0. It adds 65 tokens to every session and 1,352 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
motion-and-animation
Add motion and animation that feels great, not like slop. Use when animating any UI — transitions, hovers, presses, sheets, drawers, modals, page transitions, gestures — or when an animation feels "off". Covers the easing rules agents get wrong (ease-out for enter, ease-in for exit), springs, interruptibility…
lastfm
Access Last.fm listening history, music stats, and discovery. Query recent tracks, top artists/albums/tracks, loved tracks, similar artists, and global charts.
tidal-playlist
Manage Tidal playlists — list, create, rename, delete, set public/private visibility, add or remove albums and tracks, and list tracks in a playlist. Use when the user wants to work with playlists or share one.
metalorgie-weekly-releases
Récupère et filtre les sorties d'albums de la semaine publiées sur metalorgie.com ("Les sorties de la semaine"). Affiche les albums correspondant aux genres favoris de l'utilisateur (Metalcore, Post Hardcore, Hardcore, Neo metal) ainsi que les albums de groupes reconnus/notables, même hors genres favoris. Utilise ce…
tidal-library
Add or remove artists, albums, or tracks from your Tidal favorites library. Use when the user wants to save music, like a song, follow an artist, or remove items from their library.
tidal-search
Search for artists, albums, or tracks on Tidal. Use when the user wants to find music, look up an artist, search for a song or album.