Simon Willison’s Weblog

Online and offline development with the YUI and Charles (via) Stuart Colville shows how the Charles debugging proxy can be used to serve up hosted YUI files while developing offline.

Posted 15th May 2007 at 2:41 pm

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The Summer of Johann: prompt injections as far as the eye can see - 15th August 2025
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LLM 0.27, the annotated release notes: GPT-5 and improved tool calling - 11th August 2025

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