Markdown files should just open, so they asked Claude Code for a viewer. It opens instantly: faster, they say, than any other macOS app, and faster than Bitwarden's Chrome extension shows its fill menu.
Result Came out of the same codebase as their JSON viewer
“I asked for it and it’s instantaneous. Faster than literally any other macOS app.”
Spotted: found in the wild. Details are as reported by the source above and have not been independently verified.
They have a markdown viewer built from the same codebase as an earlier JSON viewer project. Reacting to an essay arguing markdown files should just open, they had Claude Code, running Opus 5.5, build a program to open and display markdown files.
It’s instantaneous: faster than literally any other macOS app, by their account, and it displays a markdown file faster than Bitwarden’s Chrome extension shows its fill UI.
Build a lightweight [file type] viewer for [platform]: it should open and render a file as close to instantaneously as possible, with no unnecessary dependencies or startup overhead. Prioritize raw open and first paint speed over features.
A starting prompt written by Agents in the Wild. Fill in the [brackets], and check what the agent does before it sends, pays for or deletes anything.