Unverified60% confidenceFactExact time
The HTTP Accept request header is a content negotiation mechanism that allows clients to inform servers of the expected content format they wish to receive.
2
Sources
60%
Confidence
Long-term
Relevance
8/28/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedThe HTTP protocol specifies the rules for requests and responses; the essence of a protocol is a set of rules and constraints.74% similarUnverifiedIn most webhook protocols, the HTTP status code indicates "whether this delivery was accepted", not "whether the business has finished processing".71% similarUnverifiedHTTP request headers (such as User-Agent, Referer, and custom headers) can likewise carry encoded data.70% similarUnverifiedHTTP response headers are a batch of key-value pair metadata that the server sends before returning the body, covering content type, caching policy, security policy (such as CSP, HSTS), cross-origin control (CORS), and X-prefixed custom fields; the browser parses some fields but completely ignores unrecognized custom fields, and never displays them to the user.68% similarUnverifiedThe HTTP protocol defines how browsers and servers talk to each other.68% similar
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