diff --git a/contracts/lybra/interfaces/ILBR.sol b/contracts/lybra/interfaces/ILBR.sol
new file mode 100644
index 0000000..72611c9
--- /dev/null
+++ b/contracts/lybra/interfaces/ILBR.sol
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: BUSL-1.1
+pragma solidity ^0.8.17;
+
+interface ILBR {
+    function totalSupply() external view returns (uint256);
+    function balanceOf(address account) external view returns (uint256);
+    function mint(address user, uint256 amount) external returns(bool);
+    function burn(address user, uint256 amount) external returns(bool);
+}
\ No newline at end of file