The collection
What it explores
Promptfolio collects Custom GPTs designed around a clear role or creative constraint. The catalog shows how language, interaction design, and domain framing can shape a useful AI experience.
About the project
Promptfolio
A working archive of experiments at the intersection of language, interface design, and software engineering.
The foundation
How it is built
The site is a statically rendered Next.js application with typed catalog data, accessible interactions, responsive image delivery, and automated browser, API, and component regression tests.
The maker
About Ben McNulty
Ben is a software engineer and technical writer focused on prompt and context engineering, agentic workflows, and QA automation. Promptfolio shows how he turns nuanced product intent into tested, accessible interfaces through careful orchestration, evaluation, and design review.