Concept
Content-Usage
An HTTP response header field used to express preferences regarding the use of content in downstream purposes such as AI training, part of an AI preference extension effort advanced by the IETF.
Timeline (last 90 days)
Oct 30
Before the shared robots.txt signal, commonly seen alternatives in the industry included HTTP response header fields such as Content-Usage promoted by the IETF, as well as opt-out mechanisms on some platforms.
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