CAST — Coordinated Agent Swarm Testing

AI Research, Tooling, and Production Software

Projects

AI-powered products built from concept to production

Launching 2026
Get Me A Cover

Get Me A Cover

A curated marketplace where authors see their finished book before they buy it. Enter a title, page count, and printer, and the wrap renders live — spine width computed from paper caliper across the full 24–828 page range, text re-fitting itself, front and back holding exactly as designed. The type is real and the layout is data, never pixels — so every cover renders ebook, paperback, and audiobook from a single source, sets the author's title flawlessly across sixteen European languages, and stays theirs to customize. Exclusive by design: one cover, one buyer, retired on sale.

PublishingMarketplaceSaaS
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Launching 2026
GingerPen

GingerPen

Professional book formatting in any browser, on any OS. Import DOCX, EPUB, or Kindle files; get print-ready PDF and EPUB with real typesetting. Rescue your entire backlist.

PublishingWeb AppSaaS
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In Development
GingerCover

GingerCover

The cover design engine behind Get Me A Cover. Bring your own art; get every format, print-ready, with the wrap computed to the millimeter for any page count and printer.

AIPublishingSaaS
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Shipped
CAST

CAST

Coordinated Agent Swarm Testing — deploy 100 Claude agents in five adversarial squads to analyze any codebase. Published research with a measured 30% hallucination baseline. Open source CLI and MCP server.

Open SourceAIDeveloper Tools
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Live
ShiftAudioFormat

ShiftAudioFormat

Know your audiobook is ready before you submit it. Drop in your files and get instant readiness scores for ACX, Apple Books, Spotify and eight more — plus letter-graded quality reports, LUFS normalization, silence trimming, noise reduction, and speech analysis that flags plosives, long pauses, and room tone. Everything runs in your browser; files never leave your device. Free tier · Pro $6.99/mo.

Audio ProcessingWeb AppSaaS
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Live
AI-Built
Luna's Fairy Tales

Luna's Fairy Tales

A complete author platform for the Luna picture-book series — immersive story pages, illustration gallery, Spotify-narrated audiobooks, and direct Amazon purchase. Built around a world of Cloud Castles and Moonweavers who spin dreams from starlight.

PublishingE-commerce
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Live
AI-Built
Julie Golston

Julie Golston

Author site for literary and Norse fiction — the Norns series, the books, and the work behind them.

PortfolioBranding
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4Products Live
100AI Agents Deployed
687Bugs Found
12,500Lines Analyzed
$7.97Total Cost
5Analysis Squads

See It In Action

Watch CAST deploy 5 Claude agents to analyze a codebase in real time

cast-swarm

Research & Publications

Advancing the science of AI-assisted software development

“100 Claude agents, 687 findings, $7.97 — a viable substitute for human beta testing”
Preprint · v2 · 2026

CAST: Coordinated Agent Swarm Testing as a Substitute for Human Beta Testing in Web Application Development

Julie Golston · Scaffold Studios

This paper introduces CAST, a methodology that deploys 100 LLM-powered agents organized into five specialized squads to perform structured static analysis of web application source code. Applied to GingerPen, a 12,500-line React/TypeScript application, CAST reduced 772 raw findings to 687 unique issues across logic, usability, data-loss, performance, and security categories at a total cost of $7.97 in 63 minutes. A complete manual census of the critical tier resolved 36 raw findings to 21 distinct defects (28.6% false-positive rate), showing CAST delivers comparable code-level coverage to human beta testing at roughly 1% of the cost — while still requiring human triage for severity calibration.

About

Scaffold Studios is a software development studio focused on building AI-powered SaaS products that solve real problems for creators and businesses.

Our publishing tools — GingerPen and GingerCover — give authors professional-grade book formatting and cover design at a fraction of traditional costs. Our open source CAST framework deploys 100 Claude AI agents to find bugs in any codebase. From audio processing to educational platforms to intelligent discovery systems, we ship products that leverage modern AI to deliver genuine value.

Our approach: identify underserved markets, build fast, ship often, and iterate based on real user feedback.

6
Products
AI
Powered
2025
Founded

Built With

Modern technologies powering our products

Claude AI
React
Next.js
TypeScript
Tailwind CSS
Vercel
Node.js
Python