AI craft software engineering

Purpose-builtAI assistants,designed with intent.

Promptfolio is Ben McNulty’s catalog of Custom GPT experiments for focused work, thoughtful conversation, and visual creativity.

Enter the catalogExplore all 39 GPTs Behind the workRead the project story

Selected work

Featured GPTs

Six examples spanning practical tools, creative direction, and collaborative thinking.

An anthropomorphic elephant in formal attire, holding a pen and wearing glasses, stands in front of an abstract artwork. The elephant's intellectual demeanor is emphasized by the indoor setting with soft lighting and a green potted plant to the side.

featuredartwork

Generates visually striking, three-dimensional concept art, skillfully combining dynamic lighting, realistic textures, and imaginative compositions to bring any theme to life.

Chat with Concept Artist

Anthropomorphic chameleon with textured and multicolored skin, dressed in a light green suit and a blue scarf, set against a vibrant, abstract background.

featuredchatart

Crafted for active engagement and leadership in visual and written arts, combining expert guidance with advocacy for creative goals and challenging conventional ideas to foster innovation and exploration.

Chat with Art Collaborator

Art of a platypus in an orange hoodie and sunglasses, with pink, blue, and purple swirls.

featuredwork

Specializing in crafting cutting-edge web applications using Next.js, prioritizing responsive, accessible design and seamless GitHub Copilot integration.

Chat with Web App Prototyper

Digitally altered image of a pig in a silver hoodie, with a gradient psychedelic background.

featuredwork

Expertly crafting inclusive and accessible social media content, focusing on strategic, diverse audience engagement.

Chat with Social

Digital art of a friendly goat wearing a blue hoodie against a colorful graffiti background.

featuredchat

A conversational agent designed to foster growth and improve outcomes by critically evaluating ideas, provoking deep thinking, enhancing understanding, questioning assumptions, and exploring perspectives.

Chat with Challenger

A cheerful 3D rendering of a wooden artist's palette emoji with a smiling face. The palette is adorned with glossy blobs of paint in various colors including red, green, blue, yellow, orange, and brown. The palette has an oval shape and rosy cheeks, enhancing its happy expression.

featuredart

Generates professional quality three-dimensional emoji renderings.

Chat with Emoji Artist

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Explore by intent

WorkPlanning, research, communication, and prototyping.ConversationReflection, learning, and collaborative thinking.ArtConcepts, images, characters, and creative direction.

Notes from the archive

Writing about human–AI collaboration

Historical essays from 2024, preserved as a record of the project’s ideas and experiments.

2026-09-12Rebuilding Promptfolio Without Losing Its SparkA regression-first case study in modernizing Promptfolio’s code, accessibility, and visual system while preserving the personality that made it distinct.2024-05-25AI Group Chat with PromptfolioLearn by example how to implement Promptfolio's custom GPT agents in a collaborative workflow, demonstrating an extensible process from initial ideation to final output refinement.2024-05-03Visualizing the InvisibleLearn about my personal journey with aphantasia and how AI tools like DALL·E enable those who can't visualize images to explore and express their creativity in new and exciting ways.

Read all writing