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Pragma

deprecated response RFC 9111 2 spellings

Declared by 17 providers across 351 published specification files 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.

Spelled 2 ways

HTTP field names are case-insensitive (RFC 9110 §5.1), so every spelling below is the same header on the wire. A contract is not the wire: generated clients key off the string, and a developer reading two of these sees two different headers.

Pragmapragma

The registry

Statusdeprecated
ReferenceRFC 9111, Section 5.4: HTTP Caching

Providers declaring it (17)

appsmax-rest-api-v1 bird chili-piper constructorio docker dream-sports engineering-platform extreme-networks microsoft-azure oauth podman roadsync safello upwind upwind-security usertesting vtex

Explore

All headers Caching Guidance on headers.apievangelist.com