Alex Greenshpun released anidoodle, an Apache-licensed agent skill that draws illustrations, films and interactive web art in 31 hand styles, entirely in code

A product needing a hero illustration, a feature spot, a launch video and a dozen matching social cards usually pays an image or video model for every frame it draws, and gets a different picture each time it reruns. Alex Greenshpun released anidoodle on 22 September 2026 as an Apache-2.0 agent skill that replaces the model with a program, so a run spends tokens and compute once and every rerender is free. The GitHub repository reports 773 stars on 4 October 2026, per the GitHub REST API.

What the skill produces

Anidoodle's README lists 31 drawing styles, each named for the mark it imitates: ballpoint, broken colour, chalkboard, charcoal erasure, coloured pencil, crayon, cut-paper collage, cyanotype blueprint, embroidery, flat vector, folk-tale storybook, ink and line-wash, isometric, low-poly 3D, marker comic, mid-century gouache, newsprint halftone, painted oil, paper-craft, pencil and watercolour, pixel art, risograph, rubber-hose, scratchboard, single-line engraving, stipple, storybook, sumi-e, toy brick, vintage scrapbook, and woodcut. Each style ships with a film of its picture being made in the order an artist in that medium would work, so a watercolour film lays pencil first then washes light to dark, and a woodblock film prints the keyblock then each colour block.

Every piece can be a still, a looping GIF, an MP4 with a score, a WebM with alpha, an animated PNG with transparency, or one self-contained HTML file around 100 KB that plays with sound on a double-click and carries its full recipe inside it. Node 20 or newer runs stills with a bundled browser; films also use ffmpeg.

The composed-in-code music

Music is treated the same way as the picture. The README states no samples and no recordings, with every sound synthesized: a modelled piano, marimba, harp, guitar, celesta, bells, strings, chiptune and drums. The engine covers every major and minor mode, picks moods per section, and fits a theme to any requested length. The example piece, Mechanical Lepidoptera, is 1,410 frames at 47 seconds with a full stereo score, drawn and scored from one program.

Install into the agent you already use

Anidoodle installs into Claude Code with /plugin marketplace add alexgreensh/anidoodle and /plugin install anidoodle, into Codex with codex plugin marketplace add alexgreensh/anidoodle, and into Grok Build with the matching grok plugin commands. The repository also ships as a standard skill folder, so any agent that reads skills can read this one. Once installed, the agent takes plain-language requests, such as a cyanotype blueprint for a careers page, and routes them to the right workflow and style.

The determinism claim, and its limit

The README's central claim is that every render is identical: pure functions with a seeded random source, so anyone with the source rebuilds the same piece. That holds across machines, sizes and reruns, which is what makes a one-time render fee defensible. Where the determinism matters most is a product's visual family: a hero and its matching feature cards are drawn from the same program with different seeds, so the hand matches.

The repository is young: 773 stars, 63 forks, and a push on 28 September 2026.

Source

• Anidoodle GitHub repository, primary source: https://github.com/alexgreensh/anidoodle
• Example film and skill folder, inside the repository: https://github.com/alexgreensh/anidoodle/tree/main/skills/anidoodle/example
• GitHub REST API for star and age, queried 4 October 2026: https://api.github.com/repos/alexgreensh/anidoodle