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

Writing about Agentic Engineering Patterns - 23rd February 2026
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This is a link post by Simon Willison, posted on 25th June 2009.

headers 2 http 100 mark-nottingham 14 resourceexpertdroid 1 validator 3

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