diff --git a/archive/src/main/kotlin/org/openrs2/archive/cache/OsrsJs5ChannelInitializer.kt b/archive/src/main/kotlin/org/openrs2/archive/cache/OsrsJs5ChannelInitializer.kt
index 9ddb8d8c..e146c4ef 100644
--- a/archive/src/main/kotlin/org/openrs2/archive/cache/OsrsJs5ChannelInitializer.kt
+++ b/archive/src/main/kotlin/org/openrs2/archive/cache/OsrsJs5ChannelInitializer.kt
@@ -6,13 +6,16 @@ import io.netty.handler.timeout.ReadTimeoutHandler
 import org.openrs2.protocol.Protocol
 import org.openrs2.protocol.Rs2Decoder
 import org.openrs2.protocol.Rs2Encoder
+import org.openrs2.protocol.login.ClientOutOfDateCodec
+import org.openrs2.protocol.login.InitJs5RemoteConnectionCodec
+import org.openrs2.protocol.login.Js5OkCodec
 
 public class OsrsJs5ChannelInitializer(private val handler: OsrsJs5ChannelHandler) : ChannelInitializer<Channel>() {
     override fun initChannel(ch: Channel) {
         ch.pipeline().addLast(
             ReadTimeoutHandler(30),
-            Rs2Encoder(Protocol.LOGIN_UPSTREAM),
-            Rs2Decoder(Protocol.JS5REMOTE_DOWNSTREAM)
+            Rs2Encoder(Protocol(InitJs5RemoteConnectionCodec())),
+            Rs2Decoder(Protocol(Js5OkCodec(), ClientOutOfDateCodec()))
         )
         ch.pipeline().addLast("handler", handler)
     }
diff --git a/game/src/main/kotlin/org/openrs2/game/GameModule.kt b/game/src/main/kotlin/org/openrs2/game/GameModule.kt
index fcd9f90c..0ffb222c 100644
--- a/game/src/main/kotlin/org/openrs2/game/GameModule.kt
+++ b/game/src/main/kotlin/org/openrs2/game/GameModule.kt
@@ -18,6 +18,7 @@ import org.openrs2.game.cluster.SingleWorldCluster
 import org.openrs2.game.net.NetworkService
 import org.openrs2.game.net.js5.Js5Service
 import org.openrs2.net.NetworkModule
+import org.openrs2.protocol.ProtocolModule
 
 public object GameModule : AbstractModule() {
     override fun configure() {
@@ -25,6 +26,7 @@ public object GameModule : AbstractModule() {
         install(CacheModule)
         install(ConfigModule)
         install(NetworkModule)
+        install(ProtocolModule)
 
         val binder = Multibinder.newSetBinder(binder(), Service::class.java)
         binder.addBinding().to(GameService::class.java)
diff --git a/game/src/main/kotlin/org/openrs2/game/net/Rs2ChannelInitializer.kt b/game/src/main/kotlin/org/openrs2/game/net/Rs2ChannelInitializer.kt
index f49c4341..0e1c7e8e 100644
--- a/game/src/main/kotlin/org/openrs2/game/net/Rs2ChannelInitializer.kt
+++ b/game/src/main/kotlin/org/openrs2/game/net/Rs2ChannelInitializer.kt
@@ -7,6 +7,8 @@ import org.openrs2.game.net.login.LoginChannelHandler
 import org.openrs2.protocol.Protocol
 import org.openrs2.protocol.Rs2Decoder
 import org.openrs2.protocol.Rs2Encoder
+import org.openrs2.protocol.login.LoginDownstream
+import org.openrs2.protocol.login.LoginUpstream
 import java.util.concurrent.TimeUnit
 import javax.inject.Inject
 import javax.inject.Provider
@@ -14,13 +16,17 @@ import javax.inject.Singleton
 
 @Singleton
 public class Rs2ChannelInitializer @Inject constructor(
-    private val handlerProvider: Provider<LoginChannelHandler>
+    private val handlerProvider: Provider<LoginChannelHandler>,
+    @LoginUpstream
+    private val loginUpStreamProtocol: Protocol,
+    @LoginDownstream
+    private val loginDownStreamProtocol: Protocol
 ) : ChannelInitializer<Channel>() {
     override fun initChannel(ch: Channel) {
         ch.pipeline().addLast(
             IdleStateHandler(true, TIMEOUT_SECS, TIMEOUT_SECS, TIMEOUT_SECS, TimeUnit.SECONDS),
-            Rs2Decoder(Protocol.LOGIN_UPSTREAM),
-            Rs2Encoder(Protocol.LOGIN_DOWNSTREAM),
+            Rs2Decoder(loginUpStreamProtocol),
+            Rs2Encoder(loginDownStreamProtocol),
             handlerProvider.get()
         )
     }
diff --git a/game/src/main/kotlin/org/openrs2/game/net/login/LoginChannelHandler.kt b/game/src/main/kotlin/org/openrs2/game/net/login/LoginChannelHandler.kt
index 469edb2a..99b66873 100644
--- a/game/src/main/kotlin/org/openrs2/game/net/login/LoginChannelHandler.kt
+++ b/game/src/main/kotlin/org/openrs2/game/net/login/LoginChannelHandler.kt
@@ -20,11 +20,13 @@ import org.openrs2.protocol.Protocol
 import org.openrs2.protocol.Rs2Decoder
 import org.openrs2.protocol.Rs2Encoder
 import org.openrs2.protocol.jaggrab.JaggrabRequestDecoder
+import org.openrs2.protocol.js5.Js5RemoteDownstream
 import org.openrs2.protocol.js5.Js5RequestDecoder
 import org.openrs2.protocol.js5.Js5ResponseEncoder
 import org.openrs2.protocol.js5.XorDecoder
 import org.openrs2.protocol.login.LoginRequest
 import org.openrs2.protocol.login.LoginResponse
+import org.openrs2.protocol.world.WorldListDownstream
 import org.openrs2.protocol.world.WorldListResponse
 import javax.inject.Inject
 import javax.inject.Provider
@@ -32,7 +34,11 @@ import javax.inject.Provider
 public class LoginChannelHandler @Inject constructor(
     private val cluster: Cluster,
     private val js5HandlerProvider: Provider<Js5ChannelHandler>,
-    private val jaggrabHandler: JaggrabChannelHandler
+    private val jaggrabHandler: JaggrabChannelHandler,
+    @Js5RemoteDownstream
+    private val js5RemoteDownstreamProtocol: Protocol,
+    @WorldListDownstream
+    private val worldListDownstreamProtocol: Protocol
 ) : SimpleChannelInboundHandler<LoginRequest>(LoginRequest::class.java) {
     override fun channelActive(ctx: ChannelHandlerContext) {
         ctx.read()
@@ -50,7 +56,7 @@ public class LoginChannelHandler @Inject constructor(
 
     private fun handleInitJs5RemoteConnection(ctx: ChannelHandlerContext, msg: LoginRequest.InitJs5RemoteConnection) {
         val encoder = ctx.pipeline().get(Rs2Encoder::class.java)
-        encoder.protocol = Protocol.JS5REMOTE_DOWNSTREAM
+        encoder.protocol = js5RemoteDownstreamProtocol
 
         if (msg.build != BUILD) {
             ctx.write(LoginResponse.ClientOutOfDate).addListener(ChannelFutureListener.CLOSE)
@@ -105,7 +111,7 @@ public class LoginChannelHandler @Inject constructor(
         }
 
         val encoder = ctx.pipeline().get(Rs2Encoder::class.java)
-        encoder.protocol = Protocol.WORLD_LIST_DOWNSTREAM
+        encoder.protocol = worldListDownstreamProtocol
 
         ctx.write(WorldListResponse(worldList, players)).addListener(ChannelFutureListener.CLOSE)
     }
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/Protocol.kt b/protocol/src/main/kotlin/org/openrs2/protocol/Protocol.kt
index 6e843fe4..9345880a 100644
--- a/protocol/src/main/kotlin/org/openrs2/protocol/Protocol.kt
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/Protocol.kt
@@ -1,17 +1,12 @@
 package org.openrs2.protocol
 
-import org.openrs2.protocol.login.ClientOutOfDateCodec
-import org.openrs2.protocol.login.InitCrossDomainConnectionCodec
-import org.openrs2.protocol.login.InitGameConnectionCodec
-import org.openrs2.protocol.login.InitJaggrabConnectionCodec
-import org.openrs2.protocol.login.InitJs5RemoteConnectionCodec
-import org.openrs2.protocol.login.IpLimitCodec
-import org.openrs2.protocol.login.Js5OkCodec
-import org.openrs2.protocol.login.RequestWorldListCodec
-import org.openrs2.protocol.login.ServerFullCodec
-import org.openrs2.protocol.world.WorldListResponseCodec
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+public class Protocol @Inject constructor(codecs: Set<PacketCodec<*>>) {
+    public constructor(vararg codecs: PacketCodec<*>) : this(codecs.toSet())
 
-public class Protocol(vararg codecs: PacketCodec<*>) {
     private val decoders = arrayOfNulls<PacketCodec<*>>(256)
     private val encoders = codecs.associateBy(PacketCodec<*>::type)
 
@@ -30,31 +25,4 @@ public class Protocol(vararg codecs: PacketCodec<*>) {
     public fun <T : Packet> getEncoder(type: Class<T>): PacketCodec<T>? {
         return encoders[type] as PacketCodec<T>?
     }
-
-    public companion object {
-        public val LOGIN_UPSTREAM: Protocol = Protocol(
-            InitGameConnectionCodec,
-            InitJs5RemoteConnectionCodec,
-            InitJaggrabConnectionCodec,
-            RequestWorldListCodec,
-            InitCrossDomainConnectionCodec
-        )
-
-        public val LOGIN_DOWNSTREAM: Protocol = Protocol(
-            ClientOutOfDateCodec,
-            ServerFullCodec,
-            IpLimitCodec
-        )
-
-        public val JS5REMOTE_DOWNSTREAM: Protocol = Protocol(
-            Js5OkCodec,
-            ClientOutOfDateCodec,
-            ServerFullCodec,
-            IpLimitCodec
-        )
-
-        public val WORLD_LIST_DOWNSTREAM: Protocol = Protocol(
-            WorldListResponseCodec
-        )
-    }
 }
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/ProtocolModule.kt b/protocol/src/main/kotlin/org/openrs2/protocol/ProtocolModule.kt
new file mode 100644
index 00000000..b82c084f
--- /dev/null
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/ProtocolModule.kt
@@ -0,0 +1,81 @@
+package org.openrs2.protocol
+
+import com.google.inject.AbstractModule
+import com.google.inject.PrivateModule
+import com.google.inject.TypeLiteral
+import com.google.inject.multibindings.Multibinder
+import org.openrs2.buffer.BufferModule
+import org.openrs2.crypto.CryptoModule
+import org.openrs2.protocol.js5.Js5RemoteDownstream
+import org.openrs2.protocol.login.ClientOutOfDateCodec
+import org.openrs2.protocol.login.InitCrossDomainConnectionCodec
+import org.openrs2.protocol.login.InitGameConnectionCodec
+import org.openrs2.protocol.login.InitJaggrabConnectionCodec
+import org.openrs2.protocol.login.InitJs5RemoteConnectionCodec
+import org.openrs2.protocol.login.IpLimitCodec
+import org.openrs2.protocol.login.Js5OkCodec
+import org.openrs2.protocol.login.LoginDownstream
+import org.openrs2.protocol.login.LoginUpstream
+import org.openrs2.protocol.login.RequestWorldListCodec
+import org.openrs2.protocol.login.ServerFullCodec
+import org.openrs2.protocol.world.WorldListDownstream
+import org.openrs2.protocol.world.WorldListResponseCodec
+
+public object ProtocolModule : AbstractModule() {
+    public override fun configure() {
+        install(BufferModule)
+        install(CryptoModule)
+
+        bindProtocol(
+            LoginUpstream::class.java,
+            InitGameConnectionCodec::class.java,
+            InitJs5RemoteConnectionCodec::class.java,
+            InitJaggrabConnectionCodec::class.java,
+            RequestWorldListCodec::class.java,
+            InitCrossDomainConnectionCodec::class.java
+        )
+
+        bindProtocol(
+            LoginDownstream::class.java,
+            ClientOutOfDateCodec::class.java,
+            ServerFullCodec::class.java,
+            IpLimitCodec::class.java
+        )
+
+        bindProtocol(
+            Js5RemoteDownstream::class.java,
+            Js5OkCodec::class.java,
+            ClientOutOfDateCodec::class.java,
+            ServerFullCodec::class.java,
+            IpLimitCodec::class.java
+        )
+
+        bindProtocol(
+            WorldListDownstream::class.java,
+            WorldListResponseCodec::class.java
+        )
+    }
+
+    private fun bindProtocol(
+        annotation: Class<out Annotation>,
+        vararg codecs: Class<out PacketCodec<*>>
+    ) {
+        install(object : PrivateModule() {
+            override fun configure() {
+                val binder = Multibinder.newSetBinder(binder(), PACKET_CODEC_TYPE_LITERAL)
+                for (codec in codecs) {
+                    binder.addBinding().to(codec)
+                }
+
+                bind(Protocol::class.java)
+                    .annotatedWith(annotation)
+                    .to(Protocol::class.java)
+
+                expose(Protocol::class.java)
+                    .annotatedWith(annotation)
+            }
+        })
+    }
+
+    private val PACKET_CODEC_TYPE_LITERAL = object : TypeLiteral<PacketCodec<*>>() {}
+}
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/js5/Js5RemoteDownstream.kt b/protocol/src/main/kotlin/org/openrs2/protocol/js5/Js5RemoteDownstream.kt
new file mode 100644
index 00000000..e6afeee6
--- /dev/null
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/js5/Js5RemoteDownstream.kt
@@ -0,0 +1,8 @@
+package org.openrs2.protocol.js5
+
+import javax.inject.Qualifier
+
+@Qualifier
+@Retention(AnnotationRetention.RUNTIME)
+@Target(AnnotationTarget.FIELD, AnnotationTarget.VALUE_PARAMETER, AnnotationTarget.FUNCTION)
+public annotation class Js5RemoteDownstream
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/ClientOutOfDateCodec.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/ClientOutOfDateCodec.kt
index 08c6ad3b..200c7ddf 100644
--- a/protocol/src/main/kotlin/org/openrs2/protocol/login/ClientOutOfDateCodec.kt
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/ClientOutOfDateCodec.kt
@@ -1,8 +1,10 @@
 package org.openrs2.protocol.login
 
 import org.openrs2.protocol.EmptyPacketCodec
+import javax.inject.Singleton
 
-public object ClientOutOfDateCodec : EmptyPacketCodec<LoginResponse.ClientOutOfDate>(
+@Singleton
+public class ClientOutOfDateCodec : EmptyPacketCodec<LoginResponse.ClientOutOfDate>(
     packet = LoginResponse.ClientOutOfDate,
     opcode = 6
 )
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/InitCrossDomainConnectionCodec.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/InitCrossDomainConnectionCodec.kt
index 06ad927a..fda56965 100644
--- a/protocol/src/main/kotlin/org/openrs2/protocol/login/InitCrossDomainConnectionCodec.kt
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/InitCrossDomainConnectionCodec.kt
@@ -1,8 +1,10 @@
 package org.openrs2.protocol.login
 
 import org.openrs2.protocol.EmptyPacketCodec
+import javax.inject.Singleton
 
-public object InitCrossDomainConnectionCodec : EmptyPacketCodec<LoginRequest.InitCrossDomainConnection>(
+@Singleton
+public class InitCrossDomainConnectionCodec : EmptyPacketCodec<LoginRequest.InitCrossDomainConnection>(
     opcode = 'G'.code,
     packet = LoginRequest.InitCrossDomainConnection
 )
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/InitGameConnectionCodec.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/InitGameConnectionCodec.kt
index 2650ebcb..3021a953 100644
--- a/protocol/src/main/kotlin/org/openrs2/protocol/login/InitGameConnectionCodec.kt
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/InitGameConnectionCodec.kt
@@ -3,8 +3,10 @@ package org.openrs2.protocol.login
 import io.netty.buffer.ByteBuf
 import org.openrs2.crypto.StreamCipher
 import org.openrs2.protocol.PacketCodec
+import javax.inject.Singleton
 
-public object InitGameConnectionCodec : PacketCodec<LoginRequest.InitGameConnection>(
+@Singleton
+public class InitGameConnectionCodec : PacketCodec<LoginRequest.InitGameConnection>(
     opcode = 14,
     length = 1,
     type = LoginRequest.InitGameConnection::class.java
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/InitJaggrabConnectionCodec.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/InitJaggrabConnectionCodec.kt
index a8346f38..58d03a94 100644
--- a/protocol/src/main/kotlin/org/openrs2/protocol/login/InitJaggrabConnectionCodec.kt
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/InitJaggrabConnectionCodec.kt
@@ -1,8 +1,10 @@
 package org.openrs2.protocol.login
 
 import org.openrs2.protocol.EmptyPacketCodec
+import javax.inject.Singleton
 
-public object InitJaggrabConnectionCodec : EmptyPacketCodec<LoginRequest.InitJaggrabConnection>(
+@Singleton
+public class InitJaggrabConnectionCodec : EmptyPacketCodec<LoginRequest.InitJaggrabConnection>(
     packet = LoginRequest.InitJaggrabConnection,
     opcode = 17
 )
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/InitJs5RemoteConnectionCodec.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/InitJs5RemoteConnectionCodec.kt
index 9402141c..31ced1da 100644
--- a/protocol/src/main/kotlin/org/openrs2/protocol/login/InitJs5RemoteConnectionCodec.kt
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/InitJs5RemoteConnectionCodec.kt
@@ -3,8 +3,10 @@ package org.openrs2.protocol.login
 import io.netty.buffer.ByteBuf
 import org.openrs2.crypto.StreamCipher
 import org.openrs2.protocol.PacketCodec
+import javax.inject.Singleton
 
-public object InitJs5RemoteConnectionCodec : PacketCodec<LoginRequest.InitJs5RemoteConnection>(
+@Singleton
+public class InitJs5RemoteConnectionCodec : PacketCodec<LoginRequest.InitJs5RemoteConnection>(
     type = LoginRequest.InitJs5RemoteConnection::class.java,
     opcode = 15,
     length = 4
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/IpLimitCodec.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/IpLimitCodec.kt
index 686c003a..abcc584c 100644
--- a/protocol/src/main/kotlin/org/openrs2/protocol/login/IpLimitCodec.kt
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/IpLimitCodec.kt
@@ -1,8 +1,10 @@
 package org.openrs2.protocol.login
 
 import org.openrs2.protocol.EmptyPacketCodec
+import javax.inject.Singleton
 
-public object IpLimitCodec : EmptyPacketCodec<LoginResponse.IpLimit>(
+@Singleton
+public class IpLimitCodec : EmptyPacketCodec<LoginResponse.IpLimit>(
     packet = LoginResponse.IpLimit,
     opcode = 9
 )
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/Js5OkCodec.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/Js5OkCodec.kt
index 3cfa4f43..254752b4 100644
--- a/protocol/src/main/kotlin/org/openrs2/protocol/login/Js5OkCodec.kt
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/Js5OkCodec.kt
@@ -1,8 +1,10 @@
 package org.openrs2.protocol.login
 
 import org.openrs2.protocol.EmptyPacketCodec
+import javax.inject.Singleton
 
-public object Js5OkCodec : EmptyPacketCodec<LoginResponse.Js5Ok>(
+@Singleton
+public class Js5OkCodec : EmptyPacketCodec<LoginResponse.Js5Ok>(
     packet = LoginResponse.Js5Ok,
     opcode = 0
 )
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/LoginDownstream.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/LoginDownstream.kt
new file mode 100644
index 00000000..e9ba385a
--- /dev/null
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/LoginDownstream.kt
@@ -0,0 +1,8 @@
+package org.openrs2.protocol.login
+
+import javax.inject.Qualifier
+
+@Qualifier
+@Retention(AnnotationRetention.RUNTIME)
+@Target(AnnotationTarget.FIELD, AnnotationTarget.VALUE_PARAMETER, AnnotationTarget.FUNCTION)
+public annotation class LoginDownstream
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/LoginUpstream.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/LoginUpstream.kt
new file mode 100644
index 00000000..6089e8b3
--- /dev/null
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/LoginUpstream.kt
@@ -0,0 +1,8 @@
+package org.openrs2.protocol.login
+
+import javax.inject.Qualifier
+
+@Qualifier
+@Retention(AnnotationRetention.RUNTIME)
+@Target(AnnotationTarget.FIELD, AnnotationTarget.VALUE_PARAMETER, AnnotationTarget.FUNCTION)
+public annotation class LoginUpstream
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/RequestWorldListCodec.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/RequestWorldListCodec.kt
index 1d6fd3c9..aab88c2e 100644
--- a/protocol/src/main/kotlin/org/openrs2/protocol/login/RequestWorldListCodec.kt
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/RequestWorldListCodec.kt
@@ -3,8 +3,10 @@ package org.openrs2.protocol.login
 import io.netty.buffer.ByteBuf
 import org.openrs2.crypto.StreamCipher
 import org.openrs2.protocol.PacketCodec
+import javax.inject.Singleton
 
-public object RequestWorldListCodec : PacketCodec<LoginRequest.RequestWorldList>(
+@Singleton
+public class RequestWorldListCodec : PacketCodec<LoginRequest.RequestWorldList>(
     type = LoginRequest.RequestWorldList::class.java,
     opcode = 23,
     length = 4
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/ServerFullCodec.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/ServerFullCodec.kt
index 1bc4a1ab..483b7ba8 100644
--- a/protocol/src/main/kotlin/org/openrs2/protocol/login/ServerFullCodec.kt
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/ServerFullCodec.kt
@@ -1,8 +1,10 @@
 package org.openrs2.protocol.login
 
 import org.openrs2.protocol.EmptyPacketCodec
+import javax.inject.Singleton
 
-public object ServerFullCodec : EmptyPacketCodec<LoginResponse.ServerFull>(
+@Singleton
+public class ServerFullCodec : EmptyPacketCodec<LoginResponse.ServerFull>(
     packet = LoginResponse.ServerFull,
     opcode = 7
 )
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/world/WorldListDownstream.kt b/protocol/src/main/kotlin/org/openrs2/protocol/world/WorldListDownstream.kt
new file mode 100644
index 00000000..b092d627
--- /dev/null
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/world/WorldListDownstream.kt
@@ -0,0 +1,8 @@
+package org.openrs2.protocol.world
+
+import javax.inject.Qualifier
+
+@Qualifier
+@Retention(AnnotationRetention.RUNTIME)
+@Target(AnnotationTarget.FIELD, AnnotationTarget.VALUE_PARAMETER, AnnotationTarget.FUNCTION)
+public annotation class WorldListDownstream
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/world/WorldListResponseCodec.kt b/protocol/src/main/kotlin/org/openrs2/protocol/world/WorldListResponseCodec.kt
index ac3f26a7..edd96999 100644
--- a/protocol/src/main/kotlin/org/openrs2/protocol/world/WorldListResponseCodec.kt
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/world/WorldListResponseCodec.kt
@@ -8,19 +8,14 @@ import org.openrs2.buffer.writeVersionedString
 import org.openrs2.crypto.StreamCipher
 import org.openrs2.protocol.PacketCodec
 import org.openrs2.protocol.PacketLength
+import javax.inject.Singleton
 
-public object WorldListResponseCodec : PacketCodec<WorldListResponse>(
+@Singleton
+public class WorldListResponseCodec : PacketCodec<WorldListResponse>(
     type = WorldListResponse::class.java,
     opcode = 0,
     length = PacketLength.VARIABLE_SHORT
 ) {
-    private const val VERSION = 1
-
-    private const val FLAG_MEMBERS_ONLY = 0x1
-    private const val FLAG_QUICK_CHAT = 0x2
-    private const val FLAG_PVP = 0x4
-    private const val FLAG_LOOT_SHARE = 0x8
-
     override fun decode(input: ByteBuf, cipher: StreamCipher): WorldListResponse {
         val version = input.readUnsignedByte().toInt()
         require(version == VERSION) {
@@ -134,4 +129,13 @@ public object WorldListResponseCodec : PacketCodec<WorldListResponse>(
             output.writeShort(count)
         }
     }
+
+    private companion object {
+        private const val VERSION = 1
+
+        private const val FLAG_MEMBERS_ONLY = 0x1
+        private const val FLAG_QUICK_CHAT = 0x2
+        private const val FLAG_PVP = 0x4
+        private const val FLAG_LOOT_SHARE = 0x8
+    }
 }