diff --git a/src/lib/net/src/slot.rs b/src/lib/net/src/slot.rs
new file mode 100644
index 00000000..8f522219
--- /dev/null
+++ b/src/lib/net/src/slot.rs
@@ -0,0 +1,56 @@
+use std::io::Read;
+
+use ferrumc_macros::{NetDecode, NetEncode};
+use ferrumc_net_codec::{
+    decode::{NetDecode, NetDecodeOpts, NetDecodeResult},
+    net_types::{length_prefixed_vec::LengthPrefixedVec, var_int::VarInt},
+};
+
+#[derive(NetEncode, Debug, Clone, Copy)]
+pub enum SlotComponent {
+    MaxStackSize { max_stack_size: VarInt },
+}
+
+#[derive(Debug, Clone, Copy)]
+pub struct NetworkSlot {
+    pub item_count: VarInt,
+    pub item_id: Option<VarInt>,
+    pub components_to_add: Option<LengthPrefixedVec<SlotComponent>>,
+    pub components_to_remove: Option<LengthPrefixedVec<VarInt>>,
+}
+
+impl NetworkSlot {
+    pub fn new(item_count: i32, item_id: i32) -> Self {
+        Self::with_components(item_count, item_id, vec![])
+    }
+
+    pub fn with_components(item_count: i32, item_id: i32, components: Vec<SlotComponent>) -> Self {
+        Self {
+            item_count: VarInt::new(item_count),
+            item_id: if item_count == 0 {
+                None
+            } else {
+                Some(VarInt::new(item_id))
+            },
+            components_to_add: if item_count == 0 {
+                None
+            } else {
+                Some(LengthPrefixedVec::new(components))
+            },
+            components_to_remove: if item_count == 0 {
+                None
+            } else {
+                Some(LengthPrefixedVec::default())
+            },
+        }
+    }
+
+    pub fn empty() -> Self {
+        Self::new(0, 0)
+    }
+
+    pub fn item_id(&mut self, item_id: VarInt) -> &mut Self {
+        self.item_id = Some(item_id);
+        self
+    }
+}