diff --git a/core/core.go b/core/core.go
index 70f9cb7..1f92d76 100644
--- a/core/core.go
+++ b/core/core.go
@@ -62,3 +62,18 @@ func Init(dataPath string) error {
 	}
 	return nil
 }
+
+func (d *FullData) WriteJSON(dataPath string) error {
+	d.Lock()
+	jsonBytes, err := json.MarshalIndent(&d, "", "\t")
+	d.Unlock()
+	if err != nil {
+		return err
+	}
+	err = ioutil.WriteFile(filepath.Join(dataPath, "comitium.json"), jsonBytes, 0666)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}