Simon Willison’s Weblog

XML.com: Identifying Atom. The hidden complexity of URIs is fascinating.

Posted 19th August 2004 at 4:08 am

Recent articles

OpenAI are quietly adopting skills, now available in ChatGPT and Codex CLI - 12th December 2025
GPT-5.2 - 11th December 2025
Useful patterns for building HTML tools - 10th December 2025

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