l)</span></span> <span>&#45;&gt;</span> <span><a href="../index.html#type-auth_credential">auth_credential</a> option</span> <span>&#45;&gt;</span> Opium.Std.Request.t <span>&#45;&gt;</span> bool</code></dt><dd><p><code>jwt_check ~algorithm ~validate</code> produces an auth check that uses JWT tokens</p><p>It rejects requests with a JWT token that cannot be parsed or has an incorrect signature according to <code>algorithm</code>, and validates other tokens against the request using <code>validate</code>.</p