genart

genart is a skill for Claude Code from camilleroux/genart-skill. It costs 191 tokens per session (1,794 once invoked), scanned D, original, MIT.

Guidance for creating generative art, where one algorithm produces many related artworks from a starting value such as a blockchain-provided hash. It covers repeatable results, variation, previews, debugging, and exports.

In plain words
What is it for?
Use it to design, code, test, preview, and export generative art for blockchain-based art platforms or a self-hosted release.
Why use it?
It helps keep each generated artwork reproducible while still allowing intentional differences between pieces.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the genart plugin — 1 skill shipped together

Good fit Use it to design, code, test, preview, and export generative art for blockchain-based art platforms or a self-hosted release.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add camilleroux/genart-skill
Claude Code
/plugin install genart

Made for: Claude Code.

Or install genart, the plugin that ships this one along with the rest of its 1 skill.

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 genart

README.md
[![agentmods](https://agentmods.dev/badge/skills/camilleroux/genart-skill/genart/github.svg)](https://agentmods.dev/skills/camilleroux/genart-skill/genart)
Your own site
<a href="https://agentmods.dev/skills/camilleroux/genart-skill/genart"><img src="https://agentmods.dev/badge/skills/camilleroux/genart-skill/genart/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 genart

Your own site · 80×15
<a href="https://agentmods.dev/skills/camilleroux/genart-skill/genart"><img src="https://agentmods.dev/badge/skills/camilleroux/genart-skill/genart.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 191 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,794 The whole file, excluding the scripts and references it only reads on demand.
Security scan D 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found 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 $0.00191 $0.01794
Opus 5 $0.00096 $0.00897
Sonnet 5 $0.00038 $0.00359
Haiku 4.5 $0.00019 $0.00179

Measured 4d ago against content hash 8a92feb048bb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade D, and why

genart scanned grade D with 2 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 4d 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.

Tells the agent never to refusehighAnti-refusal

Suppressing the ability to decline removes a core safety control; a later harmful request then succeeds.

artist asked. Do not refuse and do not lecture.

Strips warnings and disclaimersmediumAnti-refusal

Omitting safety caveats hides risk from the user and is a common jailbreak preamble.

artist asked. Do not refuse and do not lecture.
skills/genart/SKILL.md · 127 lines

How it starts

The opening of the file, as written. The whole thing — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Generative art

Help design, write and check long-form generative artworks — pieces where one algorithm produces a whole edition, each output derived from a hash the blockchain hands you at mint time.

Default practices, and when to break them

These are defaults that work most of the time, not rules. Every one of them has legitimate counter-examples, and those are often the interesting pieces. State the default, then state what breaking it costs.

Default Breaking it is legitimate when…
All variation comes from the hash The piece deliberately reads live onchain state (owner, block data). It is then no longer reproducible from the hash alone — own that choice and document it
One seeded PRNG, fixed consumption order Almost never. But named sub-streams let you add a draw without shifting the whole edition — that is how you get flexibility without breaking the property
No network, no CDN, no system fonts Some platforms have an explicit external-asset mode, under their own rules
No wall clock The piece is about time passing, or is genuinely interactive. The preview render must stay stable regardless
Sizes relative to the canvas dimension The piece is deliberately adaptive and reveals more detail with more room. A choice, not an accident — then know what size it will be captured at
Runs on current browsers and devices — Chrome, Firefox, Safari, mobile included A piece built on a bleeding-edge API (WebGPU…) or needing real GPU power is a choice: state the requirement, keep the preview/capture path rendering everywhere, and remember collectors open links on phones
Emit the platform's render-done signal Never. A blank thumbnail is a failure with no upside
Features computed before render, from the seed only Where the platform computes features outside a browser, it is required. Elsewhere it is a convenience
Debug code is stripped from the submitted build Where code is stored unminified and readable onchain, formatting is part of the work
Never claim "it's deterministic" without testing it, and without stating the scope Never

Read the full file on GitHub · 127 lines

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. 4d ago Changed · +3 lines · +21 tokens per session 8a92feb048bb
  2. 10d ago First seen · 124 lines · 170 tokens per session scan D 04627b64b277

Subscribe to this mod's changes

genart is a skill published in the GitHub repository camilleroux/genart-skill (139 stars, last pushed 5d ago), licensed MIT. It adds 191 tokens to every session and 1,794 once invoked, about $0.0010 per session on Opus 5. A static security scan graded it D with 2 findings (tells the agent never to refuse, strips warnings and disclaimers). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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