user-agent-client-hints

Checks that request headers agree with the browser they claim to be: User-Agent vs sec-ch-ua client hints, GREASE brand, header order, HTTP/2 pseudo-header order. Reads a header block or a HAR.

go golang firefox user-agent http2 linter har chromium browser-fingerprinting client-hints http-headers tls-client sec-ch-ua user-agent-client-hints header-order

Updated Sep 27, 2026
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