diff --git a/gradle.properties b/gradle.properties
index aba151a..a6b3248 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -8,10 +8,10 @@ org.gradle.jvmargs=-Xmx1G
 	loader_version=0.15.10
 
 # Mod Properties
-	mod_version = 1.0+build.1
+	mod_version = 1.0+build.dev
 	maven_group = net.hypixel
 	archives_base_name = HypixelModAPI
-	mod_api_version = 1.0
+	mod_api_version = dev-SNAPSHOT
 
 # Dependencies
 	# check this on https://modmuss50.me/fabric.html
diff --git a/src/main/java/net/hypixel/modapi/fabric/FabricModAPI.java b/src/main/java/net/hypixel/modapi/fabric/FabricModAPI.java
index 9d4fb89..9a3873c 100644
--- a/src/main/java/net/hypixel/modapi/fabric/FabricModAPI.java
+++ b/src/main/java/net/hypixel/modapi/fabric/FabricModAPI.java
@@ -5,10 +5,15 @@
 import net.fabricmc.fabric.api.client.networking.v1.ClientConfigurationNetworking;
 import net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking;
 import net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry;
+import net.fabricmc.loader.api.FabricLoader;
 import net.hypixel.modapi.HypixelModAPI;
+import net.hypixel.modapi.error.ErrorReason;
 import net.hypixel.modapi.fabric.event.HypixelModAPICallback;
+import net.hypixel.modapi.fabric.event.HypixelModAPIErrorCallback;
 import net.hypixel.modapi.fabric.payload.ClientboundHypixelPayload;
 import net.hypixel.modapi.fabric.payload.ServerboundHypixelPayload;
+import net.hypixel.modapi.handler.ClientboundPacketHandler;
+import net.hypixel.modapi.packet.impl.clientbound.event.ClientboundLocationPacket;
 import net.minecraft.client.MinecraftClient;
 import net.minecraft.network.PacketByteBuf;
 import net.minecraft.network.codec.PacketCodec;
@@ -17,11 +22,17 @@
 
 public class FabricModAPI implements ClientModInitializer {
     private static final Logger LOGGER = LogUtils.getLogger();
+    private static final boolean DEBUG_MODE = FabricLoader.getInstance().isDevelopmentEnvironment() || Boolean.getBoolean("net.hypixel.modapi.debug");
 
     @Override
     public void onInitializeClient() {
         reloadRegistrations();
         registerPacketSender();
+
+        if (DEBUG_MODE) {
+            LOGGER.info("Debug mode is enabled!");
+            registerDebug();
+        }
     }
 
     /**
@@ -93,6 +104,18 @@ private static void registerClientbound(String identifier) {
     private static void handleIncomingPayload(String identifier, ClientboundHypixelPayload payload) {
         if (!payload.isSuccess()) {
             LOGGER.warn("Received an error response for packet {}: {}", identifier, payload.getErrorReason());
+            try {
+                HypixelModAPI.getInstance().handleError(identifier, payload.getErrorReason());
+            } catch (Exception e) {
+                LOGGER.error("An error occurred while handling error response for packet {}", identifier, e);
+            }
+
+            try {
+                System.out.println("INVOKING ON ERROR");
+                HypixelModAPIErrorCallback.EVENT.invoker().onError(identifier, payload.getErrorReason());
+            } catch (Exception e) {
+                LOGGER.error("An error occurred while handling error response for packet {}", identifier, e);
+            }
             return;
         }
 
@@ -119,4 +142,24 @@ private static void registerServerbound(String identifier) {
             // Ignored as this is fired when we reload the registrations and the packet is already registered
         }
     }
+
+    private static void registerDebug() {
+        // Register events
+        HypixelModAPI.getInstance().subscribeToEventPacket(ClientboundLocationPacket.class);
+
+        HypixelModAPI.getInstance().registerHandler(ClientboundLocationPacket.class, new ClientboundPacketHandler<>() {
+            @Override
+            public void handle(ClientboundLocationPacket packet) {
+                LOGGER.info("Received location packet {}", packet);
+            }
+
+            @Override
+            public void onError(ErrorReason reason) {
+                LOGGER.error("Received error response in location handler {}", reason);
+            }
+        });
+
+        HypixelModAPICallback.EVENT.register(packet -> LOGGER.info("Received packet {}", packet));
+        HypixelModAPIErrorCallback.EVENT.register((identifier, error) -> LOGGER.error("Received error response for packet {}: {}", identifier, error));
+    }
 }
diff --git a/src/main/java/net/hypixel/modapi/fabric/event/HypixelModAPIErrorCallback.java b/src/main/java/net/hypixel/modapi/fabric/event/HypixelModAPIErrorCallback.java
new file mode 100644
index 0000000..aabeb61
--- /dev/null
+++ b/src/main/java/net/hypixel/modapi/fabric/event/HypixelModAPIErrorCallback.java
@@ -0,0 +1,20 @@
+package net.hypixel.modapi.fabric.event;
+
+import net.fabricmc.fabric.api.event.Event;
+import net.fabricmc.fabric.api.event.EventFactory;
+import net.hypixel.modapi.error.ErrorReason;
+
+/**
+ * Callback for when a Hypixel Mod API packet is received.
+ */
+public interface HypixelModAPIErrorCallback {
+
+    Event<HypixelModAPIErrorCallback> EVENT = EventFactory.createArrayBacked(HypixelModAPIErrorCallback.class, callbacks -> (identifier, reason) -> {
+        for (HypixelModAPIErrorCallback callback : callbacks) {
+            callback.onError(identifier, reason);
+        }
+    });
+
+    void onError(String identifier, ErrorReason reason);
+
+}