Stardock Releases Wireloom, an Open Source Markdown Extension for UI Wireframes

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Renders SVG mockups from a fenced code block, giving AI agents an easy, cheap, diffable way to sketch interfaces in chat, notes, and PRs

PLYMOUTH, Mich. - April 27, 2026 - Stardock today released Wireloom, an open source Markdown extension that renders UI wireframes as inline SVG from a wireloom fenced code block. The project is available on GitHub under the MIT license at github.com/StardockCorp/Wireloom and on npm as wireloom. It is already supported in Clairvoyance 0.63, Stardock's workspace app for AI staff.

Wireloom exists to solve a specific problem. AI agents run in terminals and output plain text. When asked to sketch a UI, they fall back on ASCII art, which misaligns the moment it renders in a proportional font. That output increasingly ends up in Markdown surfaces - chat windows, notes, PR comments, docs sites, issue trackers - where the boxes made of pipes and dashes turn into a jumbled mess. Mermaid, the closest existing tool, is designed for flow, sequence, class, and state diagrams, not for laying out a settings dialog or a mobile screen.

The token-cost argument is the other half. A Wireloom block for a full settings dialog is around 300 tokens of source. The same mockup rendered as a PNG embedded in a chat transcript runs into the tens of thousands. An HTML-and-CSS artifact lands in the low thousands per iteration. When an agent is refining a design across many turns, source-based wireframes stay cheap, stay diffable, and can be edited line by line by a human or by the AI.

The syntax is indentation-based. Quoted strings are labels, bare words are flags, and a parser turns the block into inline SVG that any Markdown renderer with SVG image support can display. The repo ships with the parser and SVG renderer in TypeScript, implementation notes for editor integration, and an AI skill file so agents running inside Claude Code, Codex, Copilot, Gemini, or any MCP-capable client can produce valid output on the first try. Modules cover desktop windows, mobile navbars and tab bars, and user-manual-style annotations.

"We needed our AI staff to sketch UIs in a way that actually survived the trip from a terminal into a Markdown doc," said Brad Wardell, CEO of Stardock. "ASCII art falls apart, images cost a fortune in tokens, and Mermaid isn't built for this. So we wrote the thing that was missing and put it out under MIT. If you run a Markdown tool or an AI tool that touches Markdown, pull it in."

Wireloom is static by design. There are no click handlers, no state, and no animations. Stardock's guidance is to use an HTML artifact for interactive prototypes and Mermaid for flowcharts. Wireloom answers one question: what shape is this screen.

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About Stardock

Stardock Corp, founded in 1991 and headquartered in Plymouth, Michigan, develops software and games including Start11, Fences, Object Desktop, Galactic Civilizations, and Sins of a Solar Empire. The company has been building Windows desktop tools and strategy games for more than three decades.

About Clairvoyance

Clairvoyance is Stardock's workspace app that brings code and notes together so AI staff can work effectively across both. Staff run as Claude Code, Codex, Copilot, or Gemini CLI sessions and produce notes, reports, exhibits, canvases, and Wireloom wireframes natively. Download at www.clairvoyanceai.com.

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