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Safe

obsoleted RFC 2310

Registered with IANA and declared by no provider in the APIs.io network.

What this header is for, and how to use it →

A count here is providers whose published contract declares this header — not providers who send it. Response headers set at the edge rarely appear in an OpenAPI at all, so a low number can measure documentation practice rather than deployment.

The registry

Statusobsoleted
ReferenceRFC 2310: The Safe Response Header Field

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All headers Idempotency & Reliability Guidance on headers.apievangelist.com