diff --git a/src/enums/nodeTypes.ts b/src/enums/nodeTypes.ts
new file mode 100644
index 0000000..daaf603
--- /dev/null
+++ b/src/enums/nodeTypes.ts
@@ -0,0 +1,5 @@
+enum NodeTypes {
+    type,
+    fill,
+    match,
+}
\ No newline at end of file
diff --git a/src/interfaces/Exercise.ts b/src/interfaces/Exercise.ts
new file mode 100644
index 0000000..d63bfb9
--- /dev/null
+++ b/src/interfaces/Exercise.ts
@@ -0,0 +1,5 @@
+interface Exercise {
+    id: number,
+    type: NodeTypes,
+    content: string // as json
+}
\ No newline at end of file
diff --git a/src/interfaces/Path.ts b/src/interfaces/Path.ts
new file mode 100644
index 0000000..23ec398
--- /dev/null
+++ b/src/interfaces/Path.ts
@@ -0,0 +1,11 @@
+interface Path {
+    id: number,
+    title: string,
+    description: string,
+    nodes: Node[],
+    metadata: {
+        versions: string[],
+        createdAt: Date,
+        updatedAt: Date,
+    }
+}
\ No newline at end of file
diff --git a/src/interfaces/PathNode.ts b/src/interfaces/PathNode.ts
new file mode 100644
index 0000000..11edbd8
--- /dev/null
+++ b/src/interfaces/PathNode.ts
@@ -0,0 +1,6 @@
+interface Node {
+    id: number,
+    title: string,
+    description: string,
+
+}
diff --git a/src/interfaces/Progress.ts b/src/interfaces/Progress.ts
new file mode 100644
index 0000000..ca35f8e
--- /dev/null
+++ b/src/interfaces/Progress.ts
@@ -0,0 +1,6 @@
+interface Progress {
+    pathId: number,
+    nodeId: number,
+    exerciseId: number,
+    localVersion: number,
+}
\ No newline at end of file