Everything I built with Claude Artifacts this week

Simon Willison describes using Claude Artifacts, which generate interactive single-page apps in the Claude interface, to build about 14 small tools in one week, and he calls the feature one of his favourite LLM-based tools. The projects include a URL-to-Markdown converter using the Jina Reader API, a QR code decoder built in a few seconds, and an OpenAI Audio recorder that took 21 minutes across two iterations. He notes that most tools took under five minutes, and that artifacts cannot make API calls, submit forms or link to other pages, which frustrates him. He plans to possibly build his own alternative.