diff --git a/scripts/verify-mindspace-page-sync-guards.mjs b/scripts/verify-mindspace-page-sync-guards.mjs
index 36f65f1..d1129ea 100644
--- a/scripts/verify-mindspace-page-sync-guards.mjs
+++ b/scripts/verify-mindspace-page-sync-guards.mjs
@@ -20,7 +20,18 @@ const contractSource = read('mindspace-server-adapter-contract.mjs');
 assertIncludes(
   'server.mjs syncUserGeneratedPages',
   serverSource,
-  'await mindSpacePageSync.syncUserGeneratedPages(userId);',
+  'mindSpacePageSync.syncUserGeneratedPages(userId',
+);
+assertIncludes(
+  'server.mjs list page sync bypasses full delivery',
+  serverSource,
+  'listSync = false',
+);
+const pageCoreRoutesSource = read('server/portal-mindspace-page-core-routes.mjs');
+assertIncludes(
+  'portal page list background sync',
+  pageCoreRoutesSource,
+  'syncUserGeneratedPages(userId, { listSync: true })',
 );
 if (serverSource.includes("mindSpaceServerRuntime.adapterKind === 'remote'")) {
   throw new Error(
diff --git a/server.mjs b/server.mjs
index f836c9d..c95793b 100644
--- a/server.mjs
+++ b/server.mjs
@@ -1292,7 +1292,7 @@ async function listSessionPublicHtmlRelativePaths(userId, sessionId, { sinceMs =
 
 async function syncUserGeneratedPages(
   userId,
-  { sessionId = null, sinceMs = null, onlyRelativePaths = null } = {},
+  { sessionId = null, sinceMs = null, onlyRelativePaths = null, listSync = false } = {},
 ) {
   if (!userId) return;
   // Agent-run/Finish delivery must stay scoped to the current conversation.
@@ -1330,11 +1330,13 @@ async function syncUserGeneratedPages(
     : sessionId
       ? (discoveredRelativePaths?.length ? discoveredRelativePaths : recentWorkspaceRelativePaths)
       : null;
-  if (workspacePageDeliver?.syncAndDeliver) {
+  if (!listSync && workspacePageDeliver?.syncAndDeliver) {
     return await workspacePageDeliver.syncAndDeliver(userId, { pageDataRelativePaths });
   }
   if (!mindSpacePageSync) return;
-  return await mindSpacePageSync.syncUserGeneratedPages(userId);
+  return await mindSpacePageSync.syncUserGeneratedPages(userId, {
+    onlyRelativePaths: pageDataRelativePaths,
+  });
 }
 
 async function resolveChatSaveBundle(user, h5Root, input = {}) {
diff --git a/server/portal-mindspace-page-core-routes.mjs b/server/portal-mindspace-page-core-routes.mjs
index 3f5fde4..f6adba6 100644
--- a/server/portal-mindspace-page-core-routes.mjs
+++ b/server/portal-mindspace-page-core-routes.mjs
@@ -46,7 +46,7 @@ export function createMindSpacePageListSyncScheduler({
 
     lastStartedAtByUser.set(userId, currentTime);
     const task = Promise.resolve()
-      .then(() => syncUserGeneratedPages(userId))
+      .then(() => syncUserGeneratedPages(userId, { listSync: true }))
       .catch((error) => {
         logger?.warn?.(
           `[MindSpace] background page list sync failed for user ${userId}:`,
diff --git a/server/portal-mindspace-page-core-routes.test.mjs b/server/portal-mindspace-page-core-routes.test.mjs
index 48c1f0a..6548dc3 100644
--- a/server/portal-mindspace-page-core-routes.test.mjs
+++ b/server/portal-mindspace-page-core-routes.test.mjs
@@ -230,8 +230,8 @@ test('page list background sync coalesces in-flight and throttled requests', asy
   const scheduler = createMindSpacePageListSyncScheduler({
     now: () => currentTime,
     minIntervalMs: 30_000,
-    syncUserGeneratedPages(userId) {
-      calls.push(userId);
+    syncUserGeneratedPages(userId, options) {
+      calls.push({ userId, options });
       return new Promise((resolve) => {
         resolvers.push(resolve);
       });
@@ -242,19 +242,22 @@ test('page list background sync coalesces in-flight and throttled requests', asy
   const second = scheduler('user-1');
   assert.equal(first, second);
   await Promise.resolve();
-  assert.deepEqual(calls, ['user-1']);
+  assert.deepEqual(calls, [{ userId: 'user-1', options: { listSync: true } }]);
 
   resolvers.shift()?.({ created: 0, updated: 0, skipped: 0 });
   await first;
 
   currentTime += 1_000;
   assert.equal(scheduler('user-1'), null);
-  assert.deepEqual(calls, ['user-1']);
+  assert.deepEqual(calls, [{ userId: 'user-1', options: { listSync: true } }]);
 
   currentTime += 30_000;
   const third = scheduler('user-1');
   await Promise.resolve();
-  assert.deepEqual(calls, ['user-1', 'user-1']);
+  assert.deepEqual(calls, [
+    { userId: 'user-1', options: { listSync: true } },
+    { userId: 'user-1', options: { listSync: true } },
+  ]);
   resolvers.shift()?.({ created: 0, updated: 0, skipped: 0 });
   await third;
 });