diff --git a/services/node-agent/index.js b/services/node-agent/index.js
index 282c632..c4759bf 100644
--- a/services/node-agent/index.js
+++ b/services/node-agent/index.js
@@ -961,7 +961,12 @@ function checkAgentAuth(req) {
   const m = /^Bearer\s+(.+)$/i.exec(hdr);
   if (!m) return false;
   const token = m[1];
-  return _bearerEq(token, NODE_TOKEN) || _bearerEq(token, CLUSTER_READ_TOKEN);
+  const okNode = _bearerEq(token, NODE_TOKEN);
+  const okShared = _bearerEq(token, CLUSTER_READ_TOKEN);
+  if (!okNode && !okShared) {
+    console.warn(`[auth] reject: tok.len=${token.length} NODE_TOKEN.len=${NODE_TOKEN.length} CLUSTER_READ_TOKEN.len=${CLUSTER_READ_TOKEN.length}`);
+  }
+  return okNode || okShared;
 }
 
 // ── Driver/SDK install ────────────────────────────────────────────────────