Simon Willison’s Weblog

I finally get REST. Wow. “The essence of REST is to make the states of the protocol explicit and addressible by URIs.”

Posted 27th April 2007 at 4:17 pm

Recent articles

The Summer of Johann: prompt injections as far as the eye can see - 15th August 2025
Open weight LLMs exhibit inconsistent performance across providers - 15th August 2025
LLM 0.27, the annotated release notes: GPT-5 and improved tool calling - 11th August 2025

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