Representation Metadata
Headers describing the payload itself — its type, length, encoding, disposition, location.
33 headers, ordered by how many providers in the catalog declare them.
Content-Type
433 providers
3 spellings
What the payload actually is. Second-most-declared header in the catalog and a routine source of interoperability failure.
Location
346 providers
2 spellings
The Location HTTP header — representation metadata, RFC 9110, declared by 346 providers in the API Evangelist catalog.
Link
168 providers
2 spellings
Relationships in a header rather than a body. Underused, and the quiet workhorse of pagination and deprecation notices.
Content-Disposition
131 providers
2 spellings
Whether the payload is rendered or saved, and what it is called. A quiet injection surface.
X-WP-Total
121 providers
The X-WP-Total HTTP header — representation metadata, declared by 121 providers in the API Evangelist catalog.
X-WP-TotalPages
121 providers
The X-WP-TotalPages HTTP header — representation metadata, declared by 121 providers in the API Evangelist catalog.
Content-Length
83 providers
2 spellings
The Content-Length HTTP header — representation metadata, RFC 9110, declared by 83 providers in the API Evangelist catalog.
Content-Encoding
51 providers
2 spellings
The Content-Encoding HTTP header — representation metadata, RFC 9110, declared by 51 providers in the API Evangelist catalog.
Date
50 providers
2 spellings
The Date HTTP header — representation metadata, RFC 9110, declared by 50 providers in the API Evangelist catalog.
Range
49 providers
2 spellings
The Range HTTP header — representation metadata, RFC 9110, declared by 49 providers in the API Evangelist catalog.
X-Total-Count
46 providers
2 spellings
The X-Total-Count HTTP header — representation metadata, declared by 46 providers in the API Evangelist catalog.
Content-Range
26 providers
2 spellings
The Content-Range HTTP header — representation metadata, RFC 9110, declared by 26 providers in the API Evangelist catalog.
Content-Language
23 providers
regulated
2 spellings
The Content-Language HTTP header — representation metadata, RFC 9110, declared by 23 providers in the API Evangelist catalog.
Allow
14 providers
2 spellings
The Allow HTTP header — representation metadata, RFC 9110, declared by 14 providers in the API Evangelist catalog.
Server
13 providers
2 spellings
The Server HTTP header — representation metadata, RFC 9110, declared by 13 providers in the API Evangelist catalog.
Content-MD5
12 providers
2 spellings
The Content-MD5 HTTP header — representation metadata, RFC 2616, declared by 12 providers in the API Evangelist catalog.
Accept-Ranges
12 providers
The Accept-Ranges HTTP header — representation metadata, RFC 9110, declared by 12 providers in the API Evangelist catalog.
OData-EntityId
5 providers
The OData-EntityId HTTP header — representation metadata, declared by 5 providers in the API Evangelist catalog.
Label
3 providers
The Label HTTP header — representation metadata, RFC 3253, declared by 3 providers in the API Evangelist catalog.
SLUG
2 providers
The SLUG HTTP header — representation metadata, RFC 5023, declared by 2 providers in the API Evangelist catalog.
Position
1 providers
The Position HTTP header — representation metadata, RFC 3648, declared by 1 providers in the API Evangelist catalog.
URI
The URI HTTP header — representation metadata, RFC 2068, not observed in the catalog.
ProfileObject
The ProfileObject HTTP header — representation metadata, not observed in the catalog.
Content-ID
The Content-ID HTTP header — representation metadata, not observed in the catalog.
Schedule-Reply
The Schedule-Reply HTTP header — representation metadata, RFC 6638, not observed in the catalog.
Content-Base
The Content-Base HTTP header — representation metadata, RFC 2068, not observed in the catalog.
CalDAV-Timezones
The CalDAV-Timezones HTTP header — representation metadata, RFC 7809, not observed in the catalog.
Cal-Managed-ID
The Cal-Managed-ID HTTP header — representation metadata, RFC 8607, not observed in the catalog.
Default-Style
The Default-Style HTTP header — representation metadata, not observed in the catalog.
Content-Style-Type
The Content-Style-Type HTTP header — representation metadata, not observed in the catalog.
Content-Script-Type
The Content-Script-Type HTTP header — representation metadata, not observed in the catalog.
Ordering-Type
The Ordering-Type HTTP header — representation metadata, RFC 3648, not observed in the catalog.
Link-Template
The Link-Template HTTP header — representation metadata, RFC 9652, not observed in the catalog.