diff --git a/app/api/nodes/route.ts b/app/api/nodes/route.ts
index c923174..ec92f63 100644
--- a/app/api/nodes/route.ts
+++ b/app/api/nodes/route.ts
@@ -257,14 +257,17 @@ export async function POST(request: NextRequest) {
 
     // Handle linking
     if (links && links.length > 0) {
-      // Find the corresponding cache nodes for the AT-URIs
+      // Links array contains node IDs (e.g., "node:xxxxx") from the UI
+      // Verify they belong to this user before creating relations
       const targetNodesResult = await db.query<[Array<{ id: string }>]>(
-        'SELECT id FROM node WHERE user_did = $did AND atp_uri IN $links',
+        'SELECT id FROM node WHERE user_did = $did AND id IN $links',
         { did: userDid, links: links }
       );
 
       const targetNodes = targetNodesResult[0] || [];
 
+      console.log(`[POST /api/nodes] Creating ${targetNodes.length} link relations`);
+
       // Create graph relations
       for (const targetNode of targetNodes) {
         await db.query('RELATE $from->links_to->$to', {