I'm Paul, a developer building tools, APIs, and open-source software.
These days I'm focused on Bullion API and exploring better ways to build with AI.
Selected work
Bullion APILive and historical spot prices for gold, silver, platinum and palladium, with predictable pricing and a developer-first API.Bullion CLIFetch live gold and precious-metal prices from the command line.paulund/aiA growing collection of reusable agent skills for software development and product work.
All projects Recent notes
Stop Blaming the ModelAI · 19 JunHarness EngineeringAI · 18 JunA Modern Quality Pipeline and Testing Strategy for Frontend ProjectsGood Code · 17 JunAgents Are Cron Jobs and Markdown FilesAI · 17 JunMeasure Your Agent Skills or Delete ThemAI · 12 Jun
All notes Get in touch
Have a project in mind, or just want to say hello? I'm always happy to hear from you.