diff --git a/protocol/src/main/java/mc/protocol/utils/EventBus.java b/protocol/src/main/java/mc/protocol/utils/EventBus.java
new file mode 100644
index 0000000..036b25c
--- /dev/null
+++ b/protocol/src/main/java/mc/protocol/utils/EventBus.java
@@ -0,0 +1,17 @@
+package mc.protocol.utils;
+
+import mc.protocol.ChannelContext;
+import mc.protocol.State;
+import mc.protocol.packets.ClientSidePacket;
+
+public interface EventBus {
+
+	<P extends ClientSidePacket> void subscribe(State state, Class<P> packetClass, EventHandler<P> eventHandler);
+
+	<P extends ClientSidePacket> void emit(State state, ChannelContext<P> channelContext);
+
+	@FunctionalInterface
+	interface EventHandler<P extends ClientSidePacket> {
+		void handle(ChannelContext<P> channelContext);
+	}
+}