Simon Willison’s Weblog

25th June 2009 - Link Blog

The Resource Expert Droid. Like the HTML Validator but for your server’s HTTP headers—extremely useful.

Posted 25th June 2009 at 10:06 am

Recent articles

The new GPT-5.6 family: Luna, Terra, Sol - 9th July 2026
sqlite-utils 4.0, now with database schema migrations - 7th July 2026
sqlite-utils 4.0rc2, mostly written by Claude Fable (for about $149.25) - 5th July 2026

This is a link post by Simon Willison, posted on 25th June 2009.

headers 2 http 124 mark-nottingham 14 resourceexpertdroid 1 validator 3

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