 with an <code>Authorization</code> header not of the form <code>Authorization: Bearer &lt;token&gt;</code>, and uses <code>token_check</code> to determine whether requests that are of that form should be allowed</p></dd></dl><dl><dt class="spec value" id="val-jwt"><a href="#val-jwt" class="anchor"></a><code><span class="keyword">val</span> jwt : <span>algorithm:Jwt.algorithm</span> <span>&#45;&gt;</span> <span>validate:<span>(Jwt.payload <span>&#45;&gt;</span> Opium.Std.Request.t <span>&#45;&gt;</span> boo