x-v
Declared by 61 providers across 7019 published specification files in the APIs.io network.
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.
x-vXV
Reached by regulation
Carried by the consumer-data-standards standard.
Providers declaring it (61)
aemo aer agl-energy alex-bank alinta-energy amp-bank anz australian-military-bank australian-unity-bank auswide-bank avenue-bank bank-australia bank-first bank-of-melbourne bank-of-queensland bank-of-sydney bank-of-us banksa bankvic bankwest bcu-bank bendigo-and-adelaide-bank beyond-bank cdr-energy commonwealth-bank defence-bank energy-queensland energyaustralia gateway-bank gc-mutual-bank great-southern-bank greater-bank hsbc-australia hume-bank imb-bank ing-australia judo-bank macquarie-bank move-bank mystate-bank national-australia-bank newcastle-permanent origin-energy people-first-bank pn-bank police-bank powershop qudos-bank rabobank-australia racq-bank red-energy regional-australia-bank simply-energy st-george-bank summerland-bank suncorp-bank teachers-mutual-bank ubank unity-bank up-bank westpac
Explore
All headers Versioning & Lifecycle Guidance on headers.apievangelist.com
Work with this as data
Every header here is available over the APIs.io API and to AI agents over MCP. HTTP Headers is not yet its own endpoint on the v1 API. Reach it through catalog search and the tag graph, or the MCP server.