diff --git a/src/components/sidebar/ConnectionTree.vue b/src/components/sidebar/ConnectionTree.vue
index c994aea..aadd952 100644
--- a/src/components/sidebar/ConnectionTree.vue
+++ b/src/components/sidebar/ConnectionTree.vue
@@ -136,7 +136,7 @@ async function addGroup(): Promise<void> {
   const name = prompt("New group name:");
   if (!name) return;
   try {
-    await invoke("create_group", { name, parentId: null });
+    await invoke("create_group", { name, parent_id: null });
     await connectionStore.loadGroups();
   } catch (err) {
     console.error("Failed to create group:", err);
@@ -195,7 +195,7 @@ function showGroupMenu(event: MouseEvent, group: Group): void {
         const newName = prompt("Rename group:", group.name);
         if (newName && newName !== group.name) {
           try {
-            await invoke("rename_group", { groupId: group.id, name: newName });
+            await invoke("rename_group", { id: group.id, name: newName });
             await connectionStore.loadGroups();
           } catch (err) {
             console.error("Failed to rename group:", err);
@@ -239,7 +239,7 @@ async function duplicateConnection(conn: Connection): Promise<void> {
 async function deleteConnection(conn: Connection): Promise<void> {
   if (!confirm(`Delete "${conn.name}"?`)) return;
   try {
-    await invoke("delete_connection", { connectionId: conn.id });
+    await invoke("delete_connection", { id: conn.id });
     await connectionStore.loadConnections();
   } catch (err) {
     console.error("Failed to delete connection:", err);
@@ -250,7 +250,7 @@ async function deleteConnection(conn: Connection): Promise<void> {
 async function deleteGroup(group: Group): Promise<void> {
   if (!confirm(`Delete group "${group.name}" and all its connections?`)) return;
   try {
-    await invoke("delete_group", { groupId: group.id });
+    await invoke("delete_group", { id: group.id });
     await connectionStore.loadAll();
   } catch (err) {
     console.error("Failed to delete group:", err);