How to correctly setup sing-box client with VLESS X25519 encryption

[Smosia]

OS version: debian 13

sing-box version 1.13.0-alpha.27
Environment: go1.25.3 linux/amd64
Tags: with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale,with_ccm,badlinkname,tfogo_checklinkname0
Revision: 84ceb90
CGO: disabled

I have X-ray VLESS+uTLS+Reality VPN server on VPS.
I want to use sing-box as a client.

How to correctly setup sing-box in client mode with VLESS X25519 Encryption?
merge request to xray
xray wiki

Where I should write an encryption key? generated by xray on server?
mlkem768x25519plus.native.0xxx.lTxxxxxxxxxxxxxxxxoink
Is it a correct description? docs

Here is my config:

{
    "log": {
        "level": "info",
        "timestamp": true,
        "disabled": false
    },
    "dns": {
        "servers": [
            {
                "type": "https",
                "tag": "cloudflare-doh",
                "server": "1.1.1.1"
            }
        ],
        "final": "cloudflare-doh",
        "strategy": "ipv4_only"
    },
    "inbounds": [
        {
            "type": "tun",
            "interface_name": "xray0",
            "tag": "tun-in",
            "mtu": 1500,
            "auto_route": true,
            "auto_redirect": true,
            "stack": "system",
            "address": ["192.168.x.x/30"]
        }
    ],
    "outbounds": [
        {
            "type": "direct",
            "tag": "direct-out"
        },
        {
            "type": "vless",
            "tag": "vless-out",
            "server": "ip_server",
            "server_port": 443,
            "uuid": "uuid",
            "network": "tcp",
            "flow": "xtls-rprx-vision",
            "tls": {
                "enabled": true,
                "server_name": "website",
                "utls": {
                    "enabled": true,
                    "fingerprint": "chrome"
                },
                "curve_preferences": "x25519",
                "reality": {
                    "enabled": true,
                    "public_key": "pub_key",
                    "short_id": "short_id"
                }
            }
        }
    ],
    "route": {
        "default_domain_resolver": {
            "server": "cloudflare-doh"
        },
        "rules": [
            {
                "action": "sniff"
            },
            {
                "protocol": "dns",
                "action": "hijack-dns"
            },
            {
                "inbound": "tun-in",
                "domain_suffix": [
                    "ifconfig.me"
                ],
                "outbound": "vless-out",
                "action": "route"
            }
        ],
        "final": "direct-out"
    }
}

[Glukashi]

Not supported

[upsangel]

May I ask if ML-KEM-768 will be supported?