Simon Willison’s Weblog

OAuth: Your valet key for the Web. OAuth is a really important new specification that aims to solve the “give this application permission to do X on my behalf” problem once and for all.

Posted 21st September 2007 at 11:34 pm

Recent articles

My Lethal Trifecta talk at the Bay Area AI Security Meetup - 9th August 2025
The surprise deprecation of GPT-4o for ChatGPT consumers - 8th August 2025
GPT-5: Key characteristics, pricing and model card - 7th August 2025

apis 94 authentication 13 oauth 53 openid 213 specification 3 web-services 26

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