apikey
Declared by 94 providers across 1973 published specification files in the APIs.io network.
Spelled 6 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.
apikeyapiKeyApiKeyAPIKeyAPIKEYApikey
Providers declaring it (94)
adobe-suite advancedmd africastalking aramark attomdata bharti-airtel braiins-academy cellulant centene cflow charityapi checkiday-national-holiday-api clari cloudmersive cloudprinter clover cms cohesity cometchat coresignal crunchdao currencyapi currencylayer department-of-veterans-affairs deutsche-bank docsumo dtn figure-technology-solutions fixer fleetmon freecurrencyapi gameball gather golden golden-recursion gupshup hacknotice hanko infoway-real-time-market-data-api inspectorio jotform kpn kraken kuehne-nagel la-poste landingai layup-technologies lufthansa-cargo maven-machines meltwater moogsoft nagios nansen nerdio nirvana nist novopayment numlookupapi nvd ondemand orange-business ozow placekey postnl pruna-ai recreation-gov rsc samu sap-brim-billing-and-revenue-innovation-management schema-free scispot sikoia snowsignals songstats sorsa spectro-cloud supabase swish-analytics teachable ticketspice transit tricentis twelvedata tyntec university-of-minnesota va va-gov veho viator vinculum visier xoserve zenscrape zenserp
Explore
All headers Authentication 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.