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RFC 9309 - Robots Exclusion Protocol

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IETF - Internet Engineering Task Force

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RFC 9309: Robots Exclusion Protocol

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https://datatracker.ietf.org/doc/rfc9309/

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IETF Datatracker

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This document specifies and extends the "Robots Exclusion Protocol" method originally defined by Martijn Koster in 1994 for service owners to control how content served by their services may be accessed, if at all, by automatic clients known as crawlers. Specifically, it adds definition language for the protocol, instructions for handling errors, and instructions for caching.

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