diff --git a/src/index.ts b/src/index.ts
index ea156a7..bcc2efd 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -155,6 +155,17 @@ export type { Reaction, ReactionType, ReactionCounts } from "./interfaces/Reacti
 export type { UnifiedAppNotification, PotentiallyPopulatedUnifiedAppNotification } from "./interfaces/AppNotification";
 export type { OAuthIdentity } from "./interfaces/OAuthIdentity";
 export type { PushDeviceResult, SendPushResult } from "./interfaces/Push";
+export { PUSH_EVENT_TYPES, MUTE_DURATIONS } from "./interfaces/Push";
+export type {
+  PushEventType,
+  MuteDuration,
+  NotificationPreferences,
+} from "./interfaces/Push";
+export type { UpdateNotificationPreferencesProps } from "./modules/push/updateNotificationPreferences";
+export type {
+  MuteConversationProps,
+  MuteConversationResult,
+} from "./modules/chat/muteConversation";
 export type { Report, CreateReportResponse } from "./interfaces/Report";
 export type { File, FileImage, FileImageVariant } from "./interfaces/File";
 export type {
diff --git a/src/interfaces/ConversationMember.ts b/src/interfaces/ConversationMember.ts
index a3e7ae9..72c37d1 100644
--- a/src/interfaces/ConversationMember.ts
+++ b/src/interfaces/ConversationMember.ts
@@ -9,7 +9,13 @@ export interface ConversationMember {
   userId: string;
   role: ConversationMemberRole | null;
   lastReadAt: string | null;
-  mutedUntil: string | null;
+  // Personal mute state, present ONLY on the viewer's own row (omitted for
+  // other members). Timed mute → real ISO timestamp; muted "forever" →
+  // `mutedUntil: null` with `mutedForever: true` (the storage sentinel is never
+  // exposed as a magic date). `null` + `mutedForever: false` = not muted.
+  mutedUntil?: string | null;
+  // Explicit "forever" signal for the viewer's own row. Absent on others' rows.
+  mutedForever?: boolean;
   isActive: boolean;
   leftAt: string | null;
   createdAt: string;
diff --git a/src/interfaces/Push.ts b/src/interfaces/Push.ts
index e092a1c..863f137 100644
--- a/src/interfaces/Push.ts
+++ b/src/interfaces/Push.ts
@@ -7,3 +7,49 @@ export interface PushDeviceResult {
 export interface SendPushResult {
   results: Record<string, PushDeviceResult[]>;
 }
+
+/**
+ * Every push event type — the full app-notification type set plus the chat
+ * `message` event (push-only). Mirrors the server's `PUSH_EVENT_TYPES` exactly
+ * (server `src/constants/push/pushEvents.ts`); these are the only names a
+ * `disabledTypes` set may contain.
+ */
+export const PUSH_EVENT_TYPES = [
+  "entity-comment",
+  "comment-reply",
+  "entity-mention",
+  "comment-mention",
+  "entity-upvote",
+  "comment-upvote",
+  "entity-reaction",
+  "comment-reaction",
+  "entity-reaction-milestone-specific",
+  "entity-reaction-milestone-total",
+  "comment-reaction-milestone-specific",
+  "comment-reaction-milestone-total",
+  "new-follow",
+  "connection-request",
+  "connection-accepted",
+  "space-membership-approved",
+  "event-invite",
+  "event-updated",
+  "event-cancelled",
+  "message",
+] as const;
+
+export type PushEventType = (typeof PUSH_EVENT_TYPES)[number];
+
+/**
+ * The four client-facing conversation-mute duration choices. Send the CHOICE,
+ * never a raw timestamp — the server resolves it and represents "forever" via
+ * the explicit `mutedForever` signal on the returned member. Mirrors the
+ * server's `MUTE_DURATIONS` (server `src/helpers/push/muteDuration.ts`).
+ */
+export const MUTE_DURATIONS = ["8h", "24h", "1w", "forever"] as const;
+
+export type MuteDuration = (typeof MUTE_DURATIONS)[number];
+
+/** Response of read/update notification preferences. */
+export interface NotificationPreferences {
+  disabledTypes: PushEventType[];
+}
diff --git a/src/modules/chat/index.ts b/src/modules/chat/index.ts
index 56e162c..6cda223 100644
--- a/src/modules/chat/index.ts
+++ b/src/modules/chat/index.ts
@@ -19,3 +19,4 @@ export { toggleReaction } from "./toggleReaction";
 export { listReactions } from "./listReactions";
 export { markAsRead } from "./markAsRead";
 export { reportMessage } from "./reportMessage";
+export { muteConversation } from "./muteConversation";
diff --git a/src/modules/chat/muteConversation.ts b/src/modules/chat/muteConversation.ts
new file mode 100644
index 0000000..210398c
--- /dev/null
+++ b/src/modules/chat/muteConversation.ts
@@ -0,0 +1,42 @@
+import { SublayHttpClient } from "../../core/client";
+import { ConversationMember } from "../../interfaces/ConversationMember";
+import { MuteDuration } from "../../interfaces/Push";
+
+export interface MuteConversationProps {
+  conversationId: string;
+  /**
+   * The duration CHOICE (`8h` / `24h` / `1w` / `forever`), or `null` to clear
+   * the mute. Never a raw timestamp — the server resolves it and represents
+   * "forever" via the returned member's explicit `mutedForever` signal.
+   */
+  duration: MuteDuration | null;
+  /**
+   * The acting user whose membership is muted. The service key acts on this
+   * user's behalf; the returned `currentMember` reflects that user's row.
+   */
+  userId: string;
+}
+
+export interface MuteConversationResult {
+  currentMember: ConversationMember;
+}
+
+/**
+ * Set / clear a user's conversation mute.
+ *
+ * Mirrors `POST /:projectId/chat/conversations/:conversationId/mute`. The route
+ * is acting-user-scoped; the SDK authenticates with a service key and names the
+ * acting user via `userId` (like the other per-user operations).
+ */
+export async function muteConversation(
+  client: SublayHttpClient,
+  data: MuteConversationProps
+): Promise<MuteConversationResult> {
+  const { conversationId, duration, userId } = data;
+  const response =
+    await client.projectInstance.post<MuteConversationResult>(
+      `/chat/conversations/${conversationId}/mute`,
+      { duration, userId }
+    );
+  return response.data;
+}
diff --git a/src/modules/push/getNotificationPreferences.ts b/src/modules/push/getNotificationPreferences.ts
new file mode 100644
index 0000000..2c65858
--- /dev/null
+++ b/src/modules/push/getNotificationPreferences.ts
@@ -0,0 +1,30 @@
+import { SublayHttpClient } from "../../core/client";
+import { NotificationPreferences } from "../../interfaces/Push";
+
+export interface GetNotificationPreferencesProps {
+  /**
+   * The acting user whose preferences are read. The service key acts on this
+   * user's behalf.
+   */
+  userId: string;
+}
+
+/**
+ * Read a user's push notification preferences (the set of event types disabled
+ * for push). Returns an empty `disabledTypes` (all-on) when no preference row
+ * exists.
+ *
+ * Mirrors `GET /:projectId/push-notifications/preferences`. The route is
+ * acting-user-scoped; the SDK authenticates with a service key and names the
+ * acting user via the `userId` query param (like the other per-user reads).
+ */
+export async function getNotificationPreferences(
+  client: SublayHttpClient,
+  data: GetNotificationPreferencesProps
+): Promise<NotificationPreferences> {
+  const response = await client.projectInstance.get<NotificationPreferences>(
+    `/push-notifications/preferences`,
+    { params: { userId: data.userId } }
+  );
+  return response.data;
+}
diff --git a/src/modules/push/index.ts b/src/modules/push/index.ts
index 10be63c..5aa240b 100644
--- a/src/modules/push/index.ts
+++ b/src/modules/push/index.ts
@@ -1 +1,3 @@
 export { send } from "./send";
+export { getNotificationPreferences } from "./getNotificationPreferences";
+export { updateNotificationPreferences } from "./updateNotificationPreferences";
diff --git a/src/modules/push/updateNotificationPreferences.ts b/src/modules/push/updateNotificationPreferences.ts
new file mode 100644
index 0000000..84dd018
--- /dev/null
+++ b/src/modules/push/updateNotificationPreferences.ts
@@ -0,0 +1,37 @@
+import { SublayHttpClient } from "../../core/client";
+import {
+  NotificationPreferences,
+  PushEventType,
+} from "../../interfaces/Push";
+
+export interface UpdateNotificationPreferencesProps {
+  /**
+   * The set of push event types the user has opted OUT of. Server-exact type
+   * names only (unknown names are rejected server-side); duplicates collapse.
+   */
+  disabledTypes: PushEventType[];
+  /**
+   * The acting user whose preferences are written. The service key acts on this
+   * user's behalf.
+   */
+  userId: string;
+}
+
+/**
+ * Upsert a user's push notification preferences.
+ *
+ * Mirrors `PUT /:projectId/push-notifications/preferences`. The route is
+ * acting-user-scoped; the SDK authenticates with a service key and names the
+ * acting user via `userId` (like the other per-user operations).
+ */
+export async function updateNotificationPreferences(
+  client: SublayHttpClient,
+  data: UpdateNotificationPreferencesProps
+): Promise<NotificationPreferences> {
+  const { disabledTypes, userId } = data;
+  const response = await client.projectInstance.put<NotificationPreferences>(
+    `/push-notifications/preferences`,
+    { disabledTypes, userId }
+  );
+  return response.data;
+}