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User-Agent HTTP header

HTTP request header indicating the initiating software (e.g. browser)
Thing http_request_header Q115124801
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User-Agent HTTP header

Summary

User-Agent HTTP header is a HTTP request header[1]. It is known by 6 alternative names across languages and contexts.[2]

Key Facts

  • User-Agent HTTP header's instance of is recorded as HTTP request header[3].
  • User-Agent HTTP header comprises User-Agent HTTP header value[4].
  • User-Agent HTTP header's described by source is recorded as RFC 9110: HTTP Semantics[5].
  • User-Agent HTTP header's replaced by is recorded as User-Agent Client Hints[6].

Body

Definition and Type

User-Agent HTTP header's instance of is recorded as HTTP request header[3].

Use and Application

User-Agent HTTP header comprises it value[4].

Why It Matters

User-Agent HTTP header is known by 6 alternative names across languages and contexts.[2]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). User-Agent HTTP header. Retrieved May 3, 2026, from https://4ort.xyz/entity/user-agent-http-header
MLA “User-Agent HTTP header.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/user-agent-http-header.
BibTeX @misc{4ortxyz_user-agent-http-header_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{User-Agent HTTP header}}, year = {2026}, url = {https://4ort.xyz/entity/user-agent-http-header}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): User-Agent HTTP header — https://4ort.xyz/entity/user-agent-http-header (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/user-agent-http-header · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 4w ago · Lillie Morgan · 2026-08-18 view diff on Wikidata ↗
    Imported from → —
    Replaced by → User-Agent Client Hints
    Mozilla developer network article → Web/HTTP/Headers/User-Agent
    Described by source → RFC 9110: HTTP Semantics
    + 3 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ [[Property:P8205]]: Web/HTTP/Reference/Headers/User-Agent"
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