diff --git a/margin/.gitignore b/margin/.gitignore
new file mode 100644
index 00000000..73aa31e6
--- /dev/null
+++ b/margin/.gitignore
@@ -0,0 +1,2 @@
+target
+.snfoundry_cache/
diff --git a/margin/README.md b/margin/README.md
new file mode 100644
index 00000000..d53707ff
--- /dev/null
+++ b/margin/README.md
@@ -0,0 +1,14 @@
+# Margin Leverage 
+This is the repository for our margin leverage smart contract's internals.
+
+### Project structure
+
+### Running tests
+To run tests with a shortcut, give the `test.sh` appropriate permissions:
+```sh
+chmod +x ./test.sh
+```
+Then, run all tests with backtrace(where it is supported by Foundry):
+```sh
+./test.sh
+```
diff --git a/margin/Scarb.lock b/margin/Scarb.lock
new file mode 100644
index 00000000..88a1dc04
--- /dev/null
+++ b/margin/Scarb.lock
@@ -0,0 +1,22 @@
+# Code generated by scarb DO NOT EDIT.
+version = 1
+
+[[package]]
+name = "margin"
+version = "0.1.0"
+dependencies = [
+ "snforge_std",
+]
+
+[[package]]
+name = "snforge_scarb_plugin"
+version = "0.32.0"
+source = "git+https://github.com/foundry-rs/starknet-foundry?tag=v0.32.0#3817c903b640201c72e743b9bbe70a97149828a2"
+
+[[package]]
+name = "snforge_std"
+version = "0.32.0"
+source = "git+https://github.com/foundry-rs/starknet-foundry?tag=v0.32.0#3817c903b640201c72e743b9bbe70a97149828a2"
+dependencies = [
+ "snforge_scarb_plugin",
+]
diff --git a/margin/Scarb.toml b/margin/Scarb.toml
new file mode 100644
index 00000000..fd7ea491
--- /dev/null
+++ b/margin/Scarb.toml
@@ -0,0 +1,39 @@
+[package]
+name = "margin"
+version = "0.1.0"
+edition = "2023_11"
+
+# See more keys and their definitions at https://docs.swmansion.com/scarb/docs/reference/manifest.html
+
+[dependencies]
+starknet = "2.9.4"
+
+[dev-dependencies]
+snforge_std = { git = "https://github.com/foundry-rs/starknet-foundry", tag = "v0.32.0" }
+assert_macros = "2.9.4"
+
+[[target.starknet-contract]]
+sierra = true
+
+[scripts]
+test = "snforge test"
+
+[profile.dev.cairo]
+unstable-add-statements-code-locations-debug-info = true
+unstable-add-statements-functions-debug-info = true
+inlining-strategy = "avoid"
+
+[tool.snforge]
+fuzzer_runs = 50 
+
+[[tool.snforge.fork]]
+name = "MAINNET"
+url = "http://51.195.57.196:6060/v0_7"
+block_id.tag = "latest"
+
+[[tool.snforge.fork]]
+name = "SEPOLIA"
+url = "http://51.195.57.196:6062/v0_7"
+block_id.tag = "latest"
+
+# Visit https://foundry-rs.github.io/starknet-foundry/appendix/scarb-toml.html for more information
diff --git a/margin/snfoundry.toml b/margin/snfoundry.toml
new file mode 100644
index 00000000..7d45ecda
--- /dev/null
+++ b/margin/snfoundry.toml
@@ -0,0 +1,9 @@
+# Visit https://foundry-rs.github.io/starknet-foundry/appendix/snfoundry-toml.html for more information
+
+# [sncast.myprofile1]                                    # Define a profile name
+# url = "http://127.0.0.1:5050/"                         # Url of the RPC provider
+# accounts_file = "../account-file"                      # Path to the file with the account data
+# account = "mainuser"                                   # Account from `accounts_file` or default account file that will be used for the transactions
+# keystore = "~/keystore"                                # Path to the keystore file
+# wait_params = { timeout = 500, retry_interval = 10 }   # Wait for submitted transaction parameters
+# block_explorer = "StarkScan"                           # Block explorer service used to display links to transaction details
diff --git a/margin/src/interface.cairo b/margin/src/interface.cairo
new file mode 100644
index 00000000..e3f3947a
--- /dev/null
+++ b/margin/src/interface.cairo
@@ -0,0 +1,14 @@
+use starknet::ContractAddress;
+use crate::types::{TokenAmount, PositionParameters};
+
+#[starknet::interface]
+pub trait IMargin<TContractState> {
+    fn deposit(ref self: TContractState, token: ContractAddress, amount: TokenAmount);
+    fn withdraw(ref self: TContractState, token: ContractAddress, amount: TokenAmount);
+
+    // TODO: Add Ekubo data for swap
+    fn open_margin_position(ref self: TContractState, position_parameters: PositionParameters); 
+    fn close_position(ref self: TContractState);
+
+    fn liquidate(ref self: TContractState, user: ContractAddress);
+}
diff --git a/margin/src/lib.cairo b/margin/src/lib.cairo
new file mode 100644
index 00000000..abaaf8e1
--- /dev/null
+++ b/margin/src/lib.cairo
@@ -0,0 +1,3 @@
+pub mod margin;
+pub mod types;
+pub mod interface;
diff --git a/margin/src/margin.cairo b/margin/src/margin.cairo
new file mode 100644
index 00000000..35b048c2
--- /dev/null
+++ b/margin/src/margin.cairo
@@ -0,0 +1,31 @@
+#[starknet::contract]
+pub mod Margin {
+    use starknet::{
+        event::EventEmitter,
+        storage::{StoragePointerReadAccess, StoragePointerWriteAccess, StoragePathEntry, Map},
+        ContractAddress, get_contract_address, get_caller_address, ClassHash,
+    };
+    use margin::{
+        interface::IMargin,
+        types::{Position, TokenAmount, PositionParameters}
+    };
+    
+
+    #[storage]
+    struct Storage {
+       treasury_balances: Map<(ContractAddress, ContractAddress), TokenAmount>,
+       pools: Map<ContractAddress, TokenAmount>,
+       positions: Map<ContractAddress, Position>,
+    }
+
+    #[abi(embed_v0)]
+    impl Margin of IMargin<ContractState>{
+        fn deposit(ref self: ContractState, token: ContractAddress, amount: TokenAmount) {}
+        fn withdraw(ref self: ContractState, token: ContractAddress, amount: TokenAmount) {}
+        
+        // TODO: Add Ekubo data for swap
+        fn open_margin_position(ref self: ContractState, position_parameters: PositionParameters) {} 
+        fn close_position(ref self: ContractState) {}
+        fn liquidate(ref self: ContractState, user: ContractAddress) {}
+    }
+}
diff --git a/margin/src/types.cairo b/margin/src/types.cairo
new file mode 100644
index 00000000..46eb444a
--- /dev/null
+++ b/margin/src/types.cairo
@@ -0,0 +1,21 @@
+use starknet::ContractAddress;
+
+pub type TokenAmount = u256;
+pub type Timestamp = u128;
+
+#[derive(Serde, Drop)]
+pub struct PositionParameters {
+    pub initial_token: ContractAddress,
+    pub debt_token: ContractAddress, 
+    pub amount: TokenAmount,
+}
+
+#[derive(Serde, starknet::Store)]
+pub struct Position {
+    pub initial_token: ContractAddress,
+    pub traded_token: ContractAddress,
+    pub traded_amount: TokenAmount,
+    pub debt: TokenAmount,
+    pub is_open: bool,
+    pub open_time: Timestamp,
+}
diff --git a/margin/test.sh b/margin/test.sh
new file mode 100755
index 00000000..26aa0e2a
--- /dev/null
+++ b/margin/test.sh
@@ -0,0 +1 @@
+SNFORGE_BACKTRACE=1 snforge test
\ No newline at end of file