camilleroux/genart-skill/genart

Claude Code and agent skill by camilleroux/genart-skill

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Craft long-form generative art for onchain platforms — Art Blocks, 256ART, Verse, Highlight, Plottables, bootloader.art, or a self-hosted drop — and for screen diffusion channels such as Artpoint. Covers hash-seeded determinism, resolution-agnostic rendering, features and rarity design, preview capture signals, debug GUIs and image/video export shortcuts, verification of a sketch before minting, and the ethics of the field. Use when the user mentions generative art, gen art, creative coding, long-form, onchain art, a seeded sketch, a PRNG or deterministic randomness, traits, rarity, features, a mint, a plotter or SVG output, art on screen or delivering a piece as a video, or pastes platform APIs such as tokenData, $features, inputData, $bootloader, BTLDR, hl-gen, or a base64 payload query param.

Install

npx vskill@latest install camilleroux/genart-skill/genart

SKILL.md

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.

DefaultBreaking it is legitimate when…
All variation comes from the hashThe 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 orderAlmost 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 fontsSome platforms have an explicit external-asset mode, under their own rules
No wall clockThe piece is about time passing, or is genuinely interactive. The preview render must stay stable regardless
Sizes relative to the canvas dimensionThe 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 includedA 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 signalNever. A blank thumbnail is a failure with no upside
Features computed before render, from the seed onlyWhere the platform computes features outside a browser, it is required. Elsewhere it is a convenience
Debug code is stripped from the submitted buildWhere 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 scopeNever

The firm part: breaking a default must be the artist's explicit choice, never an accident. Point out the deviation, explain what it costs, then do what the artist asked. Do not refuse and do not lecture.

Ethics

  • Never reproduce a named living artist's signature work. Techniques are shared

heritage; a body of work is not. Offered "make me a <artist>", decline that framing and offer the underlying technique instead.

  • Credit the algorithm, the shader, the palette you borrowed.
  • Check that a library's licence survives being written onchain forever.
  • Be straight about what AI did: writing the code and generating the image are

different claims.

Full version: references/ethics.md.

Platforms: read the docs, every time

Platform APIs change and the fiches in references/platforms/ deliberately hold no versions, no numbers and no field names — only the stable mental model, the canonical URLs and the questions to ask.

So the sequence is always: open the fiche → fetch the URLs it lists → then write code. Never write platform-specific code from memory, and never from the fiche alone. If a doc is unreachable, say so and flag what could not be confirmed.

TargetFiche
Art Blocks (incl. Engine / Flex)references/platforms/artblocks.md
256ARTreferences/platforms/256art.md
Versereferences/platforms/verse.md
Highlightreferences/platforms/highlight.md
Plottables (pen plotter, AB Engine)references/platforms/plottables.md
bootloader.art — ask which bootloaderreferences/platforms/bootloader.md
Self-hosted / no platformreferences/platforms/self-hosted.md
Artpoint — art on screen, you deliver a video, not codereferences/platforms/artpoint.md
Undecided between tworeferences/platforms/comparison.md

Where to look

When the question is about…Read
Seeding from a hash, PRNG choice, sub-streams, distributions, things that silently break reproducibilityreferences/determinism.md
Output that changes with canvas size, stroke weights, noise frequency, element density, print or plotter outputreferences/resolution.md
Designing traits, rarity tables, weights, distribution that came out wrongreferences/features.md
Originality, attribution, licences, disclosing AI usereferences/ethics.md
Debug panel, param tweaking, keyboard shortcuts, PNG and video export, contact sheetsreferences/tooling.md
"Is my sketch actually deterministic?", pre-mint checking, what a test can and cannot provereferences/verification.md
Techniques, tutorials, libraries, inspiration, what other artists useFetch https://github.com/camilleroux/awesome-generative-art — a maintained list; do not paraphrase it from memory

Runnable scripts

Two scripts ship with the plugin and run in place — never copy them into a project. They need Playwright installed in the artist's project and print the install command if it is missing. Contract and details: references/verification.md.

CommandDoes
node "$CLAUDE_PLUGIN_ROOT/scripts/check.mjs" <dir>Determinism: repeatability, distinctness, global-state contamination, feature stability
node "$CLAUDE_PLUGIN_ROOT/scripts/render.mjs" <dir> --hash 0x…One PNG — render it, then look at it with Read before judging any visual change
node "$CLAUDE_PLUGIN_ROOT/scripts/render.mjs" <dir> --grid NContact sheet, hash + features under each tile
node "$CLAUDE_PLUGIN_ROOT/scripts/render.mjs" <dir> --census N --edition-size EReal feature distribution vs the rarity table
node "$CLAUDE_PLUGIN_ROOT/scripts/render.mjs" <dir> --batch N --size 2400N individual full-res PNGs, hash-named — portfolio/print export

When asked to change how a piece looks, close the loop yourself: edit → render one hash → Read the PNG → judge → adjust. Do not describe a visual change you have not looked at.

Workflow

  1. Target first. Which platform? If undecided, references/platforms/comparison.md. Once decided,

open its fiche and fetch its docs before writing anything.

  1. Decide the rarity table before coding. It is much harder to retrofit.
  2. Build. Defaults above; deviations discussed, not silently taken.
  3. Look at many outputs, not one. A single good render proves nothing —

render.mjs --grid exists for this.

  1. Check before minting — check.mjs, then references/verification.md for

what the green result does and does not prove.

Security

  • Security scanPassed, 90 of 100Pattern checks on the skill's files.
  • Model reviewPassed

Quality evaluation

  • Task evaluationNot runNo evaluation yet. Run one in Skill Studio.

Source

Popularity

Repository stars
140
Repository forks
14
7-day trend score
25

Stars and forks are for the whole GitHub repository, not this skill alone. Not refreshed yet.

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