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 agentmods add skills/cdeistopened/skill-stack/image-prompt-generatornpx skills add cdeistopened/skill-stack --skill image-prompt-generatorgit clone --depth 1 https://github.com/cdeistopened/skill-stackWhat 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 | $0.00056 | $0.03539 |
| Opus 5 | $0.00028 | $0.01769 |
| Sonnet 5 | $0.00011 | $0.00708 |
| Haiku 4.5 | $0.00006 | $0.00354 |
Grade A, and why
image-prompt-generator 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 2d 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 — 413 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Image Prompt Generator
Generate professional, non-generic images using Google's Gemini API for image generation.
Prerequisites & Setup
Getting Your Gemini API Key
- Go to Google AI Studio
- Sign in with your Google account
- Click "Create API Key"
- Copy the generated key
Configuring the API Key
Option 1: Environment file (recommended)
Create a .env file in your project root:
GEMINI_API_KEY=your_api_key_here
Option 2: Direct environment variable
export GEMINI_API_KEY=your_api_key_here
Install Dependencies
pip install google-generativeai python-dotenv pillow
Available Models
| Model | API Name | Best For |
|---|---|---|
| Flash | gemini-2.5-flash-image |
Speed, drafts, iteration |
| Pro | gemini-3-pro-image-preview |
Final assets, 16:9 aspect ratio, quality |
Image Size (CRITICAL for quality)
| Size | Output | Use For |
|---|---|---|
| 1K | ~400KB | Drafts, iteration |
| 2K | ~2MB | Thumbnails, web assets (default) |
| 4K | ~7MB | Print, high-resolution needs |
CRITICAL: Always specify --size 2K or --size 4K for final assets. Without this, output defaults to 1K which looks low-quality.
Skill Stack Thumbnails - MANDATORY SETTINGS
For ANY Skill Stack thumbnail, you MUST use:
python scripts/images/generate_image.py "YOUR PROMPT" \
--model pro \
--size 2K \
--aspect 16:9 \
--output public/images/thumbnails \
--name your-slug
And your prompt MUST include risograph style instructions:
STYLE: Risograph / screen print aesthetic. Visible halftone dots throughout.
Slight misregistration between color layers. Indie printmaking quality - warm, tactile, handmade.
COLOR: Warm cream base. Charcoal and gray tones. Terracotta (#D4654A) accent on ONE key element.
TEXTURE: Visible halftone pattern. Paper grain. NOT smooth digital gradients.
AVOID: Empty white borders, photorealism, glossy renders, smooth gradients, clip art aesthetic.
What ships with it
6 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.
- 2d ago First seen · 413 lines · 56 tokens per session scan A d635bc8c791d
image-prompt-generator is a skill published in the GitHub repository cdeistopened/skill-stack (27 stars, last pushed 1mo ago), licensed MIT. It adds 56 tokens to every session and 3,539 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.
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