diff --git a/src/Control.php b/src/Control.php
index 657de6a..73ea311 100644
--- a/src/Control.php
+++ b/src/Control.php
@@ -12,20 +12,20 @@
 
 final class Control
 {
-    private Users $users;
-    private VHosts $vhosts;
-    private Permissions $permissions;
-
-    private function __construct(Server $server)
-    {
-        $this->users = Users::of($server);
-        $this->vhosts = VHosts::of($server);
-        $this->permissions = Permissions::of($server);
+    private function __construct(
+        private Users $users,
+        private VHosts $vhosts,
+        private Permissions $permissions,
+    ) {
     }
 
     public static function of(Server $server): self
     {
-        return new self($server);
+        return new self(
+            Users::of($server),
+            VHosts::of($server),
+            Permissions::of($server),
+        );
     }
 
     public function users(): Users
diff --git a/src/Control/Permissions.php b/src/Control/Permissions.php
index 1557db4..6cc7081 100644
--- a/src/Control/Permissions.php
+++ b/src/Control/Permissions.php
@@ -14,18 +14,15 @@
 
 final class Permissions
 {
-    private Server $server;
-    private Command $command;
-
-    private function __construct(Server $server)
-    {
-        $this->server = $server;
-        $this->command = Command::foreground('rabbitmqadmin');
+    private function __construct(
+        private Server $server,
+        private Command $command,
+    ) {
     }
 
     public static function of(Server $server): self
     {
-        return new self($server);
+        return new self($server, Command::foreground('rabbitmqadmin'));
     }
 
     /**
diff --git a/src/Control/Users.php b/src/Control/Users.php
index dc7da88..20cc6c4 100644
--- a/src/Control/Users.php
+++ b/src/Control/Users.php
@@ -14,18 +14,15 @@
 
 final class Users
 {
-    private Server $server;
-    private Command $command;
-
-    private function __construct(Server $server)
-    {
-        $this->server = $server;
-        $this->command = Command::foreground('rabbitmqadmin');
+    private function __construct(
+        private Server $server,
+        private Command $command,
+    ) {
     }
 
     public static function of(Server $server): self
     {
-        return new self($server);
+        return new self($server, Command::foreground('rabbitmqadmin'));
     }
 
     /**
diff --git a/src/Control/VHosts.php b/src/Control/VHosts.php
index d7e8612..2720c07 100644
--- a/src/Control/VHosts.php
+++ b/src/Control/VHosts.php
@@ -14,18 +14,15 @@
 
 final class VHosts
 {
-    private Server $server;
-    private Command $command;
-
-    private function __construct(Server $server)
-    {
-        $this->server = $server;
-        $this->command = Command::foreground('rabbitmqadmin');
+    private function __construct(
+        private Server $server,
+        private Command $command,
+    ) {
     }
 
     public static function of(Server $server): self
     {
-        return new self($server);
+        return new self($server, Command::foreground('rabbitmqadmin'));
     }
 
     /**
diff --git a/src/Model/Channel.php b/src/Model/Channel.php
index 6460f5b..12f84e1 100644
--- a/src/Model/Channel.php
+++ b/src/Model/Channel.php
@@ -15,46 +15,22 @@
  */
 final class Channel
 {
-    private Name $name;
-    private VHost\Name $vhost;
-    private User\Name $user;
-    private int $number;
-    private Node\Name $node;
-    private State $state;
-    private Messages $messages;
-    private Count $consumers;
-    private bool $confirm;
-    private bool $transactional;
-    /** @var Maybe<PointInTime> */
-    private Maybe $idleSince;
-
     /**
      * @param Maybe<PointInTime> $idleSince
      */
     private function __construct(
-        Name $name,
-        VHost\Name $vhost,
-        User\Name $user,
-        int $number,
-        Node\Name $node,
-        State $state,
-        Messages $messages,
-        Count $consumers,
-        bool $confirm,
-        bool $transactional,
-        Maybe $idleSince,
+        private Name $name,
+        private VHost\Name $vhost,
+        private User\Name $user,
+        private int $number,
+        private Node\Name $node,
+        private State $state,
+        private Messages $messages,
+        private Count $consumers,
+        private bool $confirm,
+        private bool $transactional,
+        private Maybe $idleSince,
     ) {
-        $this->name = $name;
-        $this->vhost = $vhost;
-        $this->user = $user;
-        $this->number = $number;
-        $this->node = $node;
-        $this->state = $state;
-        $this->messages = $messages;
-        $this->consumers = $consumers;
-        $this->confirm = $confirm;
-        $this->transactional = $transactional;
-        $this->idleSince = $idleSince;
     }
 
     /**
diff --git a/src/Model/Channel/Messages.php b/src/Model/Channel/Messages.php
index f1ebe8e..5f16acd 100644
--- a/src/Model/Channel/Messages.php
+++ b/src/Model/Channel/Messages.php
@@ -10,18 +10,11 @@
  */
 final class Messages
 {
-    private Count $uncommitted;
-    private Count $unconfirmed;
-    private Count $unacknowledged;
-
     private function __construct(
-        Count $uncommitted,
-        Count $unconfirmed,
-        Count $unacknowledged,
+        private Count $uncommitted,
+        private Count $unconfirmed,
+        private Count $unacknowledged,
     ) {
-        $this->uncommitted = $uncommitted;
-        $this->unconfirmed = $unconfirmed;
-        $this->unacknowledged = $unacknowledged;
     }
 
     /**
diff --git a/src/Model/Channel/Name.php b/src/Model/Channel/Name.php
index 83a88ab..01b35c1 100644
--- a/src/Model/Channel/Name.php
+++ b/src/Model/Channel/Name.php
@@ -8,11 +8,8 @@
  */
 final class Name
 {
-    private string $value;
-
-    private function __construct(string $value)
+    private function __construct(private string $value)
     {
-        $this->value = $value;
     }
 
     /**
diff --git a/src/Model/Connection.php b/src/Model/Connection.php
index 4080b89..6461eeb 100644
--- a/src/Model/Connection.php
+++ b/src/Model/Connection.php
@@ -22,51 +22,22 @@
  */
 final class Connection
 {
-    private Name $name;
-    private PointInTime $connectedAt;
-    private Timeout $timeout;
-    private VHost\Name $vhost;
-    private User\Name $user;
-    private Protocol $protocol;
-    private AuthenticationMechanism $authenticationMechanism;
-    private bool $ssl;
-    private Peer $peer;
-    private Host $host;
-    private Port $port;
-    private Node\Name $node;
-    private Type $type;
-    private State $state;
-
     private function __construct(
-        Name $name,
-        PointInTime $connectedAt,
-        Timeout $timeout,
-        VHost\Name $vhost,
-        User\Name $user,
-        Protocol $protocol,
-        AuthenticationMechanism $authenticationMechanism,
-        bool $ssl,
-        Peer $peer,
-        Host $host,
-        Port $port,
-        Node\Name $node,
-        Type $type,
-        State $state,
+        private Name $name,
+        private PointInTime $connectedAt,
+        private Timeout $timeout,
+        private VHost\Name $vhost,
+        private User\Name $user,
+        private Protocol $protocol,
+        private AuthenticationMechanism $authenticationMechanism,
+        private bool $ssl,
+        private Peer $peer,
+        private Host $host,
+        private Port $port,
+        private Node\Name $node,
+        private Type $type,
+        private State $state,
     ) {
-        $this->connectedAt = $connectedAt;
-        $this->timeout = $timeout;
-        $this->vhost = $vhost;
-        $this->user = $user;
-        $this->protocol = $protocol;
-        $this->authenticationMechanism = $authenticationMechanism;
-        $this->ssl = $ssl;
-        $this->peer = $peer;
-        $this->host = $host;
-        $this->port = $port;
-        $this->name = $name;
-        $this->node = $node;
-        $this->type = $type;
-        $this->state = $state;
     }
 
     /**
diff --git a/src/Model/Connection/Name.php b/src/Model/Connection/Name.php
index cbe9c3b..2cdf547 100644
--- a/src/Model/Connection/Name.php
+++ b/src/Model/Connection/Name.php
@@ -8,11 +8,8 @@
  */
 final class Name
 {
-    private string $value;
-
-    private function __construct(string $value)
+    private function __construct(private string $value)
     {
-        $this->value = $value;
     }
 
     /**
diff --git a/src/Model/Connection/Peer.php b/src/Model/Connection/Peer.php
index 4f2fcde..a888f40 100644
--- a/src/Model/Connection/Peer.php
+++ b/src/Model/Connection/Peer.php
@@ -13,13 +13,10 @@
  */
 final class Peer
 {
-    private Host $host;
-    private Port $port;
-
-    private function __construct(Host $host, Port $port)
-    {
-        $this->host = $host;
-        $this->port = $port;
+    private function __construct(
+        private Host $host,
+        private Port $port,
+    ) {
     }
 
     /**
diff --git a/src/Model/Connection/Timeout.php b/src/Model/Connection/Timeout.php
index aac559f..e392311 100644
--- a/src/Model/Connection/Timeout.php
+++ b/src/Model/Connection/Timeout.php
@@ -8,21 +8,17 @@
  */
 final class Timeout
 {
-    /** @var 0|positive-int */
-    private int $value;
-
     /**
-     * @param 0|positive-int $value
+     * @param int<0, max> $value
      */
-    private function __construct(int $value)
+    private function __construct(private int $value)
     {
-        $this->value = $value;
     }
 
     /**
      * @psalm-pure
      *
-     * @param 0|positive-int $value
+     * @param int<0, max> $value
      */
     public static function of(int $value): self
     {
@@ -30,7 +26,7 @@ public static function of(int $value): self
     }
 
     /**
-     * @return 0|positive-int
+     * @return int<0, max>
      */
     public function toInt(): int
     {
diff --git a/src/Model/Consumer.php b/src/Model/Consumer.php
index ed715fd..de27138 100644
--- a/src/Model/Consumer.php
+++ b/src/Model/Consumer.php
@@ -14,27 +14,14 @@
  */
 final class Consumer
 {
-    private Tag $tag;
-    private Name $channel;
-    private Identity $queue;
-    private Connection\Name $connection;
-    private bool $ackRequired;
-    private bool $exclusive;
-
     private function __construct(
-        Tag $tag,
-        Name $channel,
-        Identity $queue,
-        Connection\Name $connection,
-        bool $ackRequired,
-        bool $exclusive,
+        private Tag $tag,
+        private Name $channel,
+        private Identity $queue,
+        private Connection\Name $connection,
+        private bool $ackRequired,
+        private bool $exclusive,
     ) {
-        $this->tag = $tag;
-        $this->channel = $channel;
-        $this->queue = $queue;
-        $this->connection = $connection;
-        $this->ackRequired = $ackRequired;
-        $this->exclusive = $exclusive;
     }
 
     /**
diff --git a/src/Model/Consumer/Tag.php b/src/Model/Consumer/Tag.php
index 57f2b99..0c1b9f8 100644
--- a/src/Model/Consumer/Tag.php
+++ b/src/Model/Consumer/Tag.php
@@ -8,11 +8,8 @@
  */
 final class Tag
 {
-    private string $value;
-
-    private function __construct(string $value)
+    private function __construct(private string $value)
     {
-        $this->value = $value;
     }
 
     /**
diff --git a/src/Model/Count.php b/src/Model/Count.php
index f58b752..25e9be2 100644
--- a/src/Model/Count.php
+++ b/src/Model/Count.php
@@ -8,19 +8,15 @@
  */
 final class Count
 {
-    /** @var 0|positive-int */
-    private int $value;
-
     /**
-     * @param 0|positive-int $value
+     * @param int<0, max> $value
      */
-    private function __construct(int $value)
+    private function __construct(private int $value)
     {
-        $this->value = $value;
     }
 
     /**
-     * @param 0|positive-int $value
+     * @param int<0, max> $value
      */
     public static function of(int $value): self
     {
@@ -28,7 +24,7 @@ public static function of(int $value): self
     }
 
     /**
-     * @return 0|positive-int
+     * @return int<0, max>
      */
     public function toInt(): int
     {
diff --git a/src/Model/Exchange.php b/src/Model/Exchange.php
index b26019f..b887716 100644
--- a/src/Model/Exchange.php
+++ b/src/Model/Exchange.php
@@ -13,27 +13,14 @@
  */
 final class Exchange
 {
-    private Name $name;
-    private VHost\Name $vhost;
-    private Type $type;
-    private bool $durable;
-    private bool $autoDelete;
-    private bool $internal;
-
     private function __construct(
-        Name $name,
-        VHost\Name $vhost,
-        Type $type,
-        bool $durable,
-        bool $autoDelete,
-        bool $internal,
+        private Name $name,
+        private VHost\Name $vhost,
+        private Type $type,
+        private bool $durable,
+        private bool $autoDelete,
+        private bool $internal,
     ) {
-        $this->name = $name;
-        $this->vhost = $vhost;
-        $this->type = $type;
-        $this->durable = $durable;
-        $this->autoDelete = $autoDelete;
-        $this->internal = $internal;
     }
 
     /**
diff --git a/src/Model/Exchange/Name.php b/src/Model/Exchange/Name.php
index 6ef982f..ae9accf 100644
--- a/src/Model/Exchange/Name.php
+++ b/src/Model/Exchange/Name.php
@@ -8,11 +8,8 @@
  */
 final class Name
 {
-    private string $value;
-
-    private function __construct(string $value)
+    private function __construct(private string $value)
     {
-        $this->value = $value;
     }
 
     /**
diff --git a/src/Model/Node.php b/src/Model/Node.php
index 9c96819..1a9d1f3 100644
--- a/src/Model/Node.php
+++ b/src/Model/Node.php
@@ -13,15 +13,11 @@
  */
 final class Node
 {
-    private Name $name;
-    private Type $type;
-    private bool $running;
-
-    private function __construct(Name $name, Type $type, bool $running)
-    {
-        $this->name = $name;
-        $this->type = $type;
-        $this->running = $running;
+    private function __construct(
+        private Name $name,
+        private Type $type,
+        private bool $running,
+    ) {
     }
 
     /**
diff --git a/src/Model/Node/Name.php b/src/Model/Node/Name.php
index 585aded..c34ba8e 100644
--- a/src/Model/Node/Name.php
+++ b/src/Model/Node/Name.php
@@ -15,13 +15,10 @@
  */
 final class Name
 {
-    private string $value;
-    private Host $host;
-
-    private function __construct(string $value, Host $host)
-    {
-        $this->value = $value;
-        $this->host = $host;
+    private function __construct(
+        private string $value,
+        private Host $host,
+    ) {
     }
 
     /**
diff --git a/src/Model/Permission.php b/src/Model/Permission.php
index bca077b..46ed168 100644
--- a/src/Model/Permission.php
+++ b/src/Model/Permission.php
@@ -8,24 +8,13 @@
  */
 final class Permission
 {
-    private User\Name $user;
-    private VHost\Name $vhost;
-    private string $configure;
-    private string $write;
-    private string $read;
-
     private function __construct(
-        User\Name $user,
-        VHost\Name $vhost,
-        string $configure,
-        string $write,
-        string $read,
+        private User\Name $user,
+        private VHost\Name $vhost,
+        private string $configure,
+        private string $write,
+        private string $read,
     ) {
-        $this->user = $user;
-        $this->vhost = $vhost;
-        $this->configure = $configure;
-        $this->write = $write;
-        $this->read = $read;
     }
 
     /**
diff --git a/src/Model/Queue.php b/src/Model/Queue.php
index 7bbbbfb..42d54c7 100644
--- a/src/Model/Queue.php
+++ b/src/Model/Queue.php
@@ -15,40 +15,20 @@
  */
 final class Queue
 {
-    private Identity $identity;
-    private Messages $messages;
-    /** @var Maybe<PointInTime> */
-    private Maybe $idleSince;
-    private Count $consumers;
-    private State $state;
-    private Node\Name $node;
-    private bool $exclusive;
-    private bool $autoDelete;
-    private bool $durable;
-
     /**
      * @param Maybe<PointInTime> $idleSince
      */
     private function __construct(
-        Identity $identity,
-        Messages $messages,
-        Maybe $idleSince,
-        Count $consumers,
-        State $state,
-        Node\Name $node,
-        bool $exclusive,
-        bool $autoDelete,
-        bool $durable,
+        private Identity $identity,
+        private Messages $messages,
+        private Maybe $idleSince,
+        private Count $consumers,
+        private State $state,
+        private Node\Name $node,
+        private bool $exclusive,
+        private bool $autoDelete,
+        private bool $durable,
     ) {
-        $this->identity = $identity;
-        $this->messages = $messages;
-        $this->idleSince = $idleSince;
-        $this->consumers = $consumers;
-        $this->state = $state;
-        $this->node = $node;
-        $this->exclusive = $exclusive;
-        $this->autoDelete = $autoDelete;
-        $this->durable = $durable;
     }
 
     /**
diff --git a/src/Model/Queue/Identity.php b/src/Model/Queue/Identity.php
index d14a062..546fcf1 100644
--- a/src/Model/Queue/Identity.php
+++ b/src/Model/Queue/Identity.php
@@ -10,13 +10,10 @@
  */
 final class Identity
 {
-    private string $name;
-    private Name $vhost;
-
-    private function __construct(string $name, Name $vhost)
-    {
-        $this->name = $name;
-        $this->vhost = $vhost;
+    private function __construct(
+        private string $name,
+        private Name $vhost,
+    ) {
     }
 
     /**
diff --git a/src/Model/Queue/Messages.php b/src/Model/Queue/Messages.php
index 9cce247..8a281d2 100644
--- a/src/Model/Queue/Messages.php
+++ b/src/Model/Queue/Messages.php
@@ -10,18 +10,11 @@
  */
 final class Messages
 {
-    private Count $total;
-    private Count $ready;
-    private Count $unacknowledged;
-
     private function __construct(
-        Count $total,
-        Count $ready,
-        Count $unacknowledged,
+        private Count $total,
+        private Count $ready,
+        private Count $unacknowledged,
     ) {
-        $this->total = $total;
-        $this->ready = $ready;
-        $this->unacknowledged = $unacknowledged;
     }
 
     /**
diff --git a/src/Model/User.php b/src/Model/User.php
index 4a30983..d031104 100644
--- a/src/Model/User.php
+++ b/src/Model/User.php
@@ -14,22 +14,14 @@
  */
 final class User
 {
-    private Name $name;
-    private Password $password;
-    /** @var Set<string> */
-    private Set $tags;
-
     /**
      * @param Set<string> $tags
      */
     private function __construct(
-        Name $name,
-        Password $password,
-        Set $tags,
+        private Name $name,
+        private Password $password,
+        private Set $tags,
     ) {
-        $this->name = $name;
-        $this->password = $password;
-        $this->tags = $tags;
     }
 
     /**
diff --git a/src/Model/User/Name.php b/src/Model/User/Name.php
index 42dbc32..45ca23d 100644
--- a/src/Model/User/Name.php
+++ b/src/Model/User/Name.php
@@ -8,11 +8,8 @@
  */
 final class Name
 {
-    private string $value;
-
-    private function __construct(string $value)
+    private function __construct(private string $value)
     {
-        $this->value = $value;
     }
 
     /**
diff --git a/src/Model/User/Password.php b/src/Model/User/Password.php
index 5db37af..e57e3be 100644
--- a/src/Model/User/Password.php
+++ b/src/Model/User/Password.php
@@ -8,13 +8,10 @@
  */
 final class Password
 {
-    private string $hash;
-    private string $algorithm;
-
-    private function __construct(string $hash, string $algorithm)
-    {
-        $this->hash = $hash;
-        $this->algorithm = $algorithm;
+    private function __construct(
+        private string $hash,
+        private string $algorithm,
+    ) {
     }
 
     /**
diff --git a/src/Model/VHost.php b/src/Model/VHost.php
index 6a3e495..8b40d5a 100644
--- a/src/Model/VHost.php
+++ b/src/Model/VHost.php
@@ -13,15 +13,11 @@
  */
 final class VHost
 {
-    private Name $name;
-    private Messages $messages;
-    private bool $tracing;
-
-    private function __construct(Name $name, Messages $messages, bool $tracing)
-    {
-        $this->name = $name;
-        $this->messages = $messages;
-        $this->tracing = $tracing;
+    private function __construct(
+        private Name $name,
+        private Messages $messages,
+        private bool $tracing,
+    ) {
     }
 
     /**
diff --git a/src/Model/VHost/Messages.php b/src/Model/VHost/Messages.php
index 7f0e451..08089a6 100644
--- a/src/Model/VHost/Messages.php
+++ b/src/Model/VHost/Messages.php
@@ -10,18 +10,11 @@
  */
 final class Messages
 {
-    private Count $total;
-    private Count $ready;
-    private Count $unacknowledged;
-
     private function __construct(
-        Count $total,
-        Count $ready,
-        Count $unacknowledged,
+        private Count $total,
+        private Count $ready,
+        private Count $unacknowledged,
     ) {
-        $this->total = $total;
-        $this->ready = $ready;
-        $this->unacknowledged = $unacknowledged;
     }
 
     /**
diff --git a/src/Model/VHost/Name.php b/src/Model/VHost/Name.php
index 2b768a9..4a45aac 100644
--- a/src/Model/VHost/Name.php
+++ b/src/Model/VHost/Name.php
@@ -8,11 +8,8 @@
  */
 final class Name
 {
-    private string $value;
-
-    private function __construct(string $value)
+    private function __construct(private string $value)
     {
-        $this->value = $value;
     }
 
     /**
diff --git a/src/Status.php b/src/Status.php
index 0f68295..c5fb722 100644
--- a/src/Status.php
+++ b/src/Status.php
@@ -44,22 +44,12 @@
 
 final class Status
 {
-    private Server $server;
-    private Clock $clock;
-    private Environment $environment;
-    private Command $command;
-
     private function __construct(
-        Server $server,
-        Clock $clock,
-        ?Environment $environment = null,
+        private Server $server,
+        private Clock $clock,
+        private Environment $environment,
+        private Command $command,
     ) {
-        $this->server = $server;
-        $this->clock = $clock;
-        $this->environment = $environment ?? Environment\Local::of();
-        $this->command = Command::foreground('rabbitmqadmin')
-            ->withShortOption('f', 'raw_json')
-            ->withArgument('list');
     }
 
     public static function of(
@@ -67,7 +57,14 @@ public static function of(
         Clock $clock,
         ?Environment $environment = null,
     ): self {
-        return new self($server, $clock, $environment);
+        return new self(
+            $server,
+            $clock,
+            $environment ?? Environment\Local::of(),
+            Command::foreground('rabbitmqadmin')
+                ->withShortOption('f', 'raw_json')
+                ->withArgument('list'),
+        );
     }
 
     /**
diff --git a/src/Status/Environment/Local.php b/src/Status/Environment/Local.php
index 4089d6e..3d68eb5 100644
--- a/src/Status/Environment/Local.php
+++ b/src/Status/Environment/Local.php
@@ -9,11 +9,8 @@
 
 final class Local implements Environment
 {
-    private ?Path $vhost;
-
-    private function __construct(?Path $vhost)
+    private function __construct(private ?Path $vhost)
     {
-        $this->vhost = $vhost;
     }
 
     #[\Override]
diff --git a/src/Status/Environment/Remote.php b/src/Status/Environment/Remote.php
index 8e3dddd..556daa5 100644
--- a/src/Status/Environment/Remote.php
+++ b/src/Status/Environment/Remote.php
@@ -13,24 +13,13 @@
 
 final class Remote implements Environment
 {
-    private Host $host;
-    private Port $port;
-    private string $username;
-    private string $password;
-    private ?Path $vhost;
-
     private function __construct(
-        Host $host,
-        Port $port,
-        string $username,
-        string $password,
-        ?Path $vhost,
+        private Host $host,
+        private Port $port,
+        private string $username,
+        private string $password,
+        private ?Path $vhost,
     ) {
-        $this->host = $host;
-        $this->port = $port;
-        $this->username = $username;
-        $this->password = $password;
-        $this->vhost = $vhost;
     }
 
     #[\Override]