diff --git a/app/api/nodes/route.ts b/app/api/nodes/route.ts
index da0202e..a1db10b 100644
--- a/app/api/nodes/route.ts
+++ b/app/api/nodes/route.ts
@@ -156,6 +156,9 @@ export async function POST(request: NextRequest) {
       const finalGraphemes = getGraphemeLength(postText);
       if (finalGraphemes > 300) {
         console.error(`[POST /api/nodes] Post ${i + 1} exceeds 300 graphemes (${finalGraphemes})`);
+        console.error(`[POST /api/nodes] Post content: ${postText.substring(0, 200)}...`);
+        console.error(`[POST /api/nodes] Detail URL: ${detailUrl}`);
+        console.error(`[POST /api/nodes] Link suffix graphemes: ${getGraphemeLength(linkSuffix)}`);
         throw new Error(`Post exceeds 300 grapheme limit: ${finalGraphemes} graphemes`);
       }