diff --git a/backend/internal/interfaces/http/dto/typescript/index.ts b/backend/internal/interfaces/http/dto/typescript/index.ts
new file mode 100644
index 0000000..7139a7f
--- /dev/null
+++ b/backend/internal/interfaces/http/dto/typescript/index.ts
@@ -0,0 +1,62 @@
+// Code generated by tygo. DO NOT EDIT.
+
+//////////
+// source: activity.go
+
+export interface Activity {
+  ID: number /* int */;
+  Name: string;
+  BillingRate: number /* float64 */;
+}
+
+//////////
+// source: company.go
+
+export interface Company {
+  ID: number /* int */;
+  Name: string;
+}
+
+//////////
+// source: customer.go
+
+export interface Customer {
+  ID: number /* int */;
+  Name: string;
+  CompanyID: number /* int */;
+}
+
+//////////
+// source: project.go
+
+export interface Project {
+  ID: number /* int */;
+  Name: string;
+  CustomerID: number /* int */;
+}
+
+//////////
+// source: timeentry.go
+
+export interface TimeEntry {
+  ID: number /* int */;
+  UserID: number /* int */;
+  ProjectID: number /* int */;
+  ActivityID: number /* int */;
+  Start: string;
+  End: string;
+  Description: string;
+  Billable: number /* int */; // Percentage (0-100)
+}
+
+//////////
+// source: user.go
+
+export interface User {
+  ID: number /* int */;
+  Username: string;
+  Password: string;
+  Role: string;
+  CompanyID: number /* int */;
+  HourlyRate: number /* float64 */;
+}
diff --git a/backend/tygo.yml b/backend/tygo.yml
new file mode 100644
index 0000000..04f926a
--- /dev/null
+++ b/backend/tygo.yml
@@ -0,0 +1,5 @@
+packages:
+  - path: github.com/timetracker/backend/internal/domain/entities
+    type_mappings:
+      "time.Time": "string"
+    output_path: ./internal/interfaces/http/dto/typescript
diff --git a/frontend/src/types/index.ts b/frontend/src/types/index.ts
new file mode 100644
index 0000000..1f3d001
--- /dev/null
+++ b/frontend/src/types/index.ts
@@ -0,0 +1,62 @@
+// Code generated by tygo. DO NOT EDIT.
+
+//////////
+// source: activity.go
+
+export interface Activity {
+    ID: number /* int */;
+    Name: string;
+    BillingRate: number /* float64 */;
+}
+
+//////////
+// source: company.go
+
+export interface Company {
+    ID: number /* int */;
+    Name: string;
+}
+
+//////////
+// source: customer.go
+
+export interface Customer {
+    ID: number /* int */;
+    Name: string;
+    CompanyID: number /* int */;
+}
+
+//////////
+// source: project.go
+
+export interface Project {
+    ID: number /* int */;
+    Name: string;
+    CustomerID: number /* int */;
+}
+
+//////////
+// source: timeentry.go
+
+export interface TimeEntry {
+    ID: number /* int */;
+    UserID: number /* int */;
+    ProjectID: number /* int */;
+    ActivityID: number /* int */;
+    Start: string;
+    End: string;
+    Description: string;
+    Billable: number /* int */; // Percentage (0-100)
+}
+
+//////////
+// source: user.go
+
+export interface User {
+    ID: number /* int */;
+    Username: string;
+    Password: string;
+    Role: string;
+    CompanyID: number /* int */;
+    HourlyRate: number /* float64 */;
+}