Access-Control-Allow-Headers
IANA permanent
response
Declared by 16 providers across 2289 published specification files in the APIs.io network.
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.
The registry
| Status | permanent |
|---|---|
| Reference | Fetch |
Providers declaring it (16)
bird braintrust brightcove coveo deliverect echo-global genius-sports kore-wireless newstore palo-alto-networks placer qualio receeve rhumbix roadsync shyft