Expect-CT
deprecated
response
RFC 9163
Declared by 3 providers across 136 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 | deprecated |
|---|---|
| Reference | RFC 9163: Expect-CT Extension for HTTP |
Providers declaring it (3)
bitpowr-technologies-inc salesforce zoominfo
Explore
All headers Security Policy Guidance on headers.apievangelist.com