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 mishahanin/heading-os --skill flux-imagegit clone --depth 1 https://github.com/mishahanin/heading-osWrote 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/mishahanin/heading-os/flux-image)<a href="https://agentmods.dev/skills/mishahanin/heading-os/flux-image"><img src="https://agentmods.dev/badge/skills/mishahanin/heading-os/flux-image/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/mishahanin/heading-os/flux-image"><img src="https://agentmods.dev/badge/skills/mishahanin/heading-os/flux-image.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Privilege Escalation · line 56 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- medium Excessive Agency · line 6 Skill selects an external model or provider that may use a different account or billing plan than the operator expects. Undisclosed model switches can cause unexpected cost or quota consumption.Fix: Remove the model/provider override or disclose it prominently and require explicit operator approval before invoking an external coding CLI or billed model.
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 | $0.00117 | $0.01748 |
| Opus 5 | $0.00059 | $0.00874 |
| Sonnet 5 | $0.00023 | $0.00350 |
| Haiku 4.5 | $0.00012 | $0.00175 |
Grade A, and why
flux-image 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 6d 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 — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AI Image Generator
Generate images using Nano Banana 2 (Google DeepMind) or FLUX.2 max (Black Forest Labs) via the Replicate API. Runs a Python script that calls the API and saves images locally.
Prerequisites
The REPLICATE_API_TOKEN must be set in the workspace .env file (root directory). The script auto-loads it from .env using python-dotenv -- no manual export needed.
If the token is missing or invalid, instruct the user to add it to .env:
# In the workspace root .env file:
REPLICATE_API_TOKEN=r8_your_token_here
Get a token at: https://replicate.com/account/api-tokens
Security: Never hardcode API tokens in skill files, scripts, or documentation. All secrets live in .env only.
Workflow
1. Determine the prompt
Either:
- Use the image prompt from a preceding
/image-promptskill invocation - Use a prompt the user provides directly
- Craft a prompt from context (article, post, etc.) using the image prompt guidelines
2. Run the generation script
Run from the workspace root (the script path is root-relative). The image is a DATA artifact. It
must land in the DATA overlay, never the engine tree. generate_image.py writes --output literally
relative to the current directory, which is the engine root after the cd. A bare outputs/...
would create a stray image inside the engine. An omitted --output now resolves the data outputs dir
itself, and refuses when it cannot. Still resolve the dir here and pass an absolute path, so the
filename is descriptive:
cd "$(git rev-parse --show-toplevel)"
OUTPUTS_DIR="$(python3 -c "import sys; sys.path.insert(0,'.'); from scripts.utils.workspace import get_outputs_dir; print(get_outputs_dir())")"
python ".claude/skills/flux-image/scripts/generate_image.py" \
--prompt "your detailed image prompt here" \
--output "$OUTPUTS_DIR/content/images/my-image.png" \
--aspect-ratio 16:9 \
--model banana \
--format png
3. Report the result
Tell the user the file path of the generated image. Use the Read tool to display the image to the user (Claude Code can render images).
What ships with it
3 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.
- 6d ago Changed · +3 lines 4e7e95eb87f9
- 10d ago First seen · 151 lines · 117 tokens per session scan A 591c1e7b32ac
flux-image is a skill published in the GitHub repository mishahanin/heading-os (11 stars, last pushed yesterday), licensed Apache-2.0. It adds 117 tokens to every session and 1,748 once invoked, about $0.0006 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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p5js
Use when users request: p5.js sketches, creative coding, generative art, interactive visualizations, canvas animations, browser-based visual art, data viz, shader effects, or any p5.js project.
audiocraft-audio-generation
AudioCraft: MusicGen text-to-music, AudioGen text-to-sound.
baoyu-comic
A creator for educational comics, including biographies and tutorials, that turns supplied content or topics into illustrated comic pages.
hyperframes
Render MP4/WebM videos from HTML compositions.
ascii-video
ASCII video: convert video/audio to colored ASCII MP4/GIF.