This is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is.
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Simon Willison
simonwillison.net
did:plc:kft6lu4trxowqmter2b6vg6z
Apps built as Claude Artifacts now have the ability to run prompts of their own, billed to the current user of the app, not the app author
I reverse engineered the tool instructions from the system prompt to see how it works - notes here: https://simonwillison.net/2025/Jun/25/ai-powered-apps-with-claude/
2025-06-25T21:51:07.538Z