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Genart — Long-form Generative Art

A skill for designing, coding and verifying long-form generative art for onchain platforms — hash-seeded determinism, rarity tables, and pre-mint checks included.

Image & VideoAdvanced★ 131⑂ 13AI score 9/10Last updated: Aug 29, 2026

What it does

  • Hash-seeded determinism: guides PRNG choice, fixed consumption order and named sub-streams so an entire edition reproduces from the mint hash alone.
  • Platform-aware, docs-first: ships fiches for Art Blocks (Engine/Flex), 256ART, Verse, Highlight, Plottables, bootloader.art and self-hosted drops, with a hard rule — open the fiche, fetch the live docs, then write code.
  • Features and rarity: forces the rarity table to be decided before coding, then compares the real distribution against it.
  • Bundled verification scripts: check.mjs tests repeatability, distinctness, global-state contamination and feature stability; render.mjs produces single PNGs, contact sheets, feature censuses and full-res batches.
  • Resolution-agnostic rendering and ethics: canvas-relative sizing, preview capture signals, attribution/licence checks, and honest disclosure of AI involvement.

Who it's for

  • Generative artists preparing a long-form drop on Art Blocks, Highlight, 256ART and friends
  • Creative coders building seeded sketches in p5.js, Canvas or WebGL
  • Plotter/SVG and fine-art print makers driving output from the same algorithm

Examples

  1. "Is my sketch actually deterministic?" → runs node scripts/check.mjs ./sketch and reports repeatability and feature-stability failures.
  2. "Show me the edition at a glance" → render.mjs ./sketch --grid 25 builds a contact sheet with hash and features under each tile.
  3. "Do my rarity weights hold up?" → render.mjs --census 500 --edition-size 500 compares the observed feature distribution with the intended table.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/camilleroux/genart-skill/HEAD/skills/genart/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the skills/genart folder from the GitHub repo camilleroux/genart-skill into my ~/.claude/skills/genart/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/camilleroux/genart-skill.git /tmp/genart-skill && mkdir -p ~/.claude/skills && cp -r /tmp/genart-skill/skills/genart ~/.claude/skills/genart

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal and confirm Node.js is available: node -v (18+ recommended).
  2. Clone the repository: git clone https://github.com/camilleroux/genart-skill.git
  3. Create the skills directory: mkdir -p ~/.claude/skills
  4. Copy the skill in: cp -r genart-skill/skills/genart ~/.claude/skills/genart
  5. Verify that ~/.claude/skills/genart contains both references/ and scripts/.
  6. To use the check/render scripts, install Playwright inside your art project: npm i -D playwright && npx playwright install chromium
  7. Restart Claude Code, then mention "generative art", "determinism check" or a platform name like Art Blocks to trigger the skill.
View source on GitHub ↗License: MIT