diff --git a/mobile/src/api/note-agent-actions.ts b/mobile/src/api/note-agent-actions.ts
new file mode 100644
index 0000000..68d888b
--- /dev/null
+++ b/mobile/src/api/note-agent-actions.ts
@@ -0,0 +1,126 @@
+import { getApiClient } from './client';
+import { listWorkspaces } from './workspaces';
+
+export type MobileApprovalItem = {
+  id: string;
+  workspaceId: string;
+  noteId: string;
+  title: string;
+  summary: string;
+  status: 'pending' | 'approved' | 'rejected';
+};
+
+export type MobileActivityItem = {
+  id: string;
+  title: string;
+  summary: string;
+  kind: 'note' | 'task' | 'agent';
+};
+
+type NoteAgentActionDoc = {
+  id: string;
+  workspaceId: string;
+  noteId: string;
+  actorId: string;
+  actionType: 'create' | 'update' | 'summarize' | 'extract_tasks' | 'attach_citation';
+  state: 'draft' | 'proposed' | 'approved' | 'rejected' | 'applied';
+  reason?: string;
+  afterSummary?: string;
+  updatedAt: string;
+};
+
+type NoteAgentActionListResponse = {
+  items: NoteAgentActionDoc[];
+};
+
+function toApprovalStatus(action: NoteAgentActionDoc): MobileApprovalItem['status'] {
+  if (action.state === 'approved' || action.state === 'applied') {
+    return 'approved';
+  }
+
+  if (action.state === 'rejected') {
+    return 'rejected';
+  }
+
+  return 'pending';
+}
+
+function toApprovalItem(action: NoteAgentActionDoc): MobileApprovalItem {
+  return {
+    id: action.id,
+    workspaceId: action.workspaceId,
+    noteId: action.noteId,
+    title: action.afterSummary ?? action.reason ?? `${action.actionType} proposal`,
+    summary: action.reason ?? action.afterSummary ?? `Agent proposed a ${action.actionType.replaceAll('_', ' ')} change.`,
+    status: toApprovalStatus(action),
+  };
+}
+
+function toActivityKind(actionType: NoteAgentActionDoc['actionType']): MobileActivityItem['kind'] {
+  if (actionType === 'extract_tasks') {
+    return 'task';
+  }
+
+  if (actionType === 'attach_citation') {
+    return 'note';
+  }
+
+  return 'agent';
+}
+
+function toActivityItem(action: NoteAgentActionDoc): MobileActivityItem {
+  return {
+    id: action.id,
+    title: action.afterSummary ?? `${action.actionType.replaceAll('_', ' ')} update`,
+    summary: action.reason ?? action.afterSummary ?? `State: ${action.state}`,
+    kind: toActivityKind(action.actionType),
+  };
+}
+
+async function listAgentActionsForWorkspace(workspaceId: string): Promise<NoteAgentActionDoc[]> {
+  const response = await getApiClient().fetch<NoteAgentActionListResponse>(
+    `/note-agent-actions?workspaceId=${encodeURIComponent(workspaceId)}`,
+  );
+  return response.items;
+}
+
+export async function listApprovalQueue(): Promise<MobileApprovalItem[]> {
+  const workspaces = await listWorkspaces();
+  const actionGroups = await Promise.all(workspaces.map((workspace) => listAgentActionsForWorkspace(workspace.id)));
+
+  return actionGroups
+    .flat()
+    .filter((action) => action.state === 'draft' || action.state === 'proposed')
+    .sort((a, b) => b.updatedAt.localeCompare(a.updatedAt))
+    .map(toApprovalItem);
+}
+
+export async function listActivityFeed(): Promise<MobileActivityItem[]> {
+  const workspaces = await listWorkspaces();
+  const actionGroups = await Promise.all(workspaces.map((workspace) => listAgentActionsForWorkspace(workspace.id)));
+
+  return actionGroups
+    .flat()
+    .sort((a, b) => b.updatedAt.localeCompare(a.updatedAt))
+    .slice(0, 10)
+    .map(toActivityItem);
+}
+
+export async function updateApprovalState(
+  id: string,
+  workspaceId: string,
+  state: 'approved' | 'rejected',
+): Promise<MobileApprovalItem> {
+  const updated = await getApiClient().fetch<NoteAgentActionDoc>(
+    `/note-agent-actions/${encodeURIComponent(id)}?workspaceId=${encodeURIComponent(workspaceId)}`,
+    {
+      method: 'PATCH',
+      body: JSON.stringify({
+        state,
+        reviewedAt: new Date().toISOString(),
+      }),
+    },
+  );
+
+  return toApprovalItem(updated);
+}
diff --git a/mobile/src/app/(tabs)/inbox.tsx b/mobile/src/app/(tabs)/inbox.tsx
index dc878ce..2193634 100644
--- a/mobile/src/app/(tabs)/inbox.tsx
+++ b/mobile/src/app/(tabs)/inbox.tsx
@@ -1,3 +1,4 @@
+import { useEffect } from 'react';
 import { Pressable, StyleSheet, Text, View } from 'react-native';
 import { useInboxStore, type ActivityItem, type ApprovalItem, type InboxState } from '../../store/inbox-store';
 import { colors } from '../../theme';
@@ -5,28 +6,38 @@ import { colors } from '../../theme';
 export default function InboxScreen() {
   const approvals = useInboxStore((state: InboxState) => state.approvals);
   const activity = useInboxStore((state: InboxState) => state.activity);
+  const isLoading = useInboxStore((state: InboxState) => state.isLoading);
+  const hydrate = useInboxStore((state: InboxState) => state.hydrate);
   const approve = useInboxStore((state: InboxState) => state.approve);
   const reject = useInboxStore((state: InboxState) => state.reject);
 
+  useEffect(() => {
+    void hydrate();
+  }, [hydrate]);
+
   return (
     <View style={styles.container}>
       <Text style={styles.title}>Inbox</Text>
       <Text style={styles.body}>Review simple agent actions and approve or reject them from mobile.</Text>
+      {isLoading ? <Text style={styles.empty}>Loading approvals…</Text> : null}
       {approvals.map((item: ApprovalItem) => (
         <View key={item.id} style={styles.card}>
           <Text style={styles.cardTitle}>{item.title}</Text>
           <Text style={styles.cardBody}>{item.summary}</Text>
           <Text style={styles.status}>Status: {item.status}</Text>
           <View style={styles.actionRow}>
-            <Pressable style={styles.approveButton} onPress={() => approve(item.id)}>
+            <Pressable style={styles.approveButton} onPress={() => void approve(item.id)}>
               <Text style={styles.approveText}>Approve</Text>
             </Pressable>
-            <Pressable style={styles.rejectButton} onPress={() => reject(item.id)}>
+            <Pressable style={styles.rejectButton} onPress={() => void reject(item.id)}>
               <Text style={styles.rejectText}>Reject</Text>
             </Pressable>
           </View>
         </View>
       ))}
+      {!isLoading && approvals.length === 0 ? (
+        <Text style={styles.empty}>No approval items are waiting right now.</Text>
+      ) : null}
       <View style={styles.feedSection}>
         <Text style={styles.feedTitle}>Recent activity</Text>
         {activity.map((item: ActivityItem) => (
@@ -36,6 +47,9 @@ export default function InboxScreen() {
             <Text style={styles.cardBody}>{item.summary}</Text>
           </View>
         ))}
+        {!isLoading && activity.length === 0 ? (
+          <Text style={styles.empty}>No recent agent activity yet.</Text>
+        ) : null}
       </View>
     </View>
   );
@@ -58,6 +72,10 @@ const styles = StyleSheet.create({
     fontSize: 15,
     lineHeight: 21,
   },
+  empty: {
+    color: colors.textSecondary,
+    fontSize: 14,
+  },
   card: {
     backgroundColor: colors.surfaceCard,
     borderRadius: 16,
diff --git a/mobile/src/app/_layout.tsx b/mobile/src/app/_layout.tsx
index fb63234..d763f7a 100644
--- a/mobile/src/app/_layout.tsx
+++ b/mobile/src/app/_layout.tsx
@@ -2,11 +2,13 @@ import { useEffect } from 'react';
 import { Stack } from 'expo-router';
 import { StatusBar } from 'expo-status-bar';
 import { useAuthStore, type AuthState } from '../store/auth-store';
+import { useInboxStore, type InboxState } from '../store/inbox-store';
 import { useNotesStore, type NotesState } from '../store/notes-store';
 import { useWorkspaceStore, type WorkspaceState } from '../store/workspace-store';
 
 export default function RootLayout() {
   const bootstrapAuth = useAuthStore((state: AuthState) => state.bootstrap);
+  const hydrateInbox = useInboxStore((state: InboxState) => state.hydrate);
   const hydrateNotes = useNotesStore((state: NotesState) => state.hydrate);
   const hydrateWorkspaces = useWorkspaceStore((state: WorkspaceState) => state.hydrate);
 
@@ -14,7 +16,8 @@ export default function RootLayout() {
     void bootstrapAuth();
     void hydrateNotes();
     void hydrateWorkspaces();
-  }, [bootstrapAuth, hydrateNotes, hydrateWorkspaces]);
+    void hydrateInbox();
+  }, [bootstrapAuth, hydrateInbox, hydrateNotes, hydrateWorkspaces]);
 
   return (
     <>
diff --git a/mobile/src/store/inbox-store.ts b/mobile/src/store/inbox-store.ts
index 1141d0d..7c1cecc 100644
--- a/mobile/src/store/inbox-store.ts
+++ b/mobile/src/store/inbox-store.ts
@@ -1,7 +1,16 @@
 import { create } from 'zustand';
+import {
+  listActivityFeed,
+  listApprovalQueue,
+  updateApprovalState,
+  type MobileActivityItem,
+  type MobileApprovalItem,
+} from '../api/note-agent-actions';
 
 export type ApprovalItem = {
   id: string;
+  workspaceId: string;
+  noteId: string;
   title: string;
   summary: string;
   status: 'pending' | 'approved' | 'rejected';
@@ -17,56 +26,56 @@ export type ActivityItem = {
 export type InboxState = {
   approvals: ApprovalItem[];
   activity: ActivityItem[];
-  approve: (id: string) => void;
-  reject: (id: string) => void;
+  isLoading: boolean;
+  hydrate: () => Promise<void>;
+  approve: (id: string) => Promise<void>;
+  reject: (id: string) => Promise<void>;
 };
 
-export const useInboxStore = create<InboxState>((set) => ({
-  approvals: [
-    {
-      id: 'approval-1',
-      title: 'Apply note merge suggestion',
-      summary: 'Agent proposed merging two near-duplicate product planning notes.',
-      status: 'pending',
-    },
-    {
-      id: 'approval-2',
-      title: 'Create linked task from note',
-      summary: 'Agent extracted a task from a meeting note and queued it for approval.',
-      status: 'pending',
-    },
-  ],
-  activity: [
-    {
-      id: 'activity-1',
-      title: 'Summary refreshed',
-      summary: 'Agent updated a note summary after recent edits.',
-      kind: 'agent',
-    },
-    {
-      id: 'activity-2',
-      title: 'Task extracted',
-      summary: 'A follow-up task was extracted from a meeting note.',
-      kind: 'task',
-    },
-    {
-      id: 'activity-3',
-      title: 'Related note linked',
-      summary: 'A planning note was linked to a roadmap note.',
-      kind: 'note',
-    },
-  ],
-  approve(id: string) {
+function toApprovalItem(item: MobileApprovalItem): ApprovalItem {
+  return item;
+}
+
+function toActivityItem(item: MobileActivityItem): ActivityItem {
+  return item;
+}
+
+export const useInboxStore = create<InboxState>((set, get) => ({
+  approvals: [],
+  activity: [],
+  isLoading: false,
+  async hydrate() {
+    set({ isLoading: true });
+    const [approvals, activity] = await Promise.all([listApprovalQueue(), listActivityFeed()]);
+    set({
+      approvals: approvals.map(toApprovalItem),
+      activity: activity.map(toActivityItem),
+      isLoading: false,
+    });
+  },
+  async approve(id: string) {
+    const current = get().approvals.find((item) => item.id === id);
+    if (!current) {
+      return;
+    }
+
+    const updated = await updateApprovalState(id, current.workspaceId, 'approved');
     set((state) => ({
       approvals: state.approvals.map((item) =>
-        item.id === id ? { ...item, status: 'approved' } : item,
+        item.id === id ? toApprovalItem(updated) : item,
       ),
     }));
   },
-  reject(id: string) {
+  async reject(id: string) {
+    const current = get().approvals.find((item) => item.id === id);
+    if (!current) {
+      return;
+    }
+
+    const updated = await updateApprovalState(id, current.workspaceId, 'rejected');
     set((state) => ({
       approvals: state.approvals.map((item) =>
-        item.id === id ? { ...item, status: 'rejected' } : item,
+        item.id === id ? toApprovalItem(updated) : item,
       ),
     }));
   },