diff --git a/lib/permissions/minimally-encoded-thread-permissions.js b/lib/permissions/minimally-encoded-thread-permissions.js
--- a/lib/permissions/minimally-encoded-thread-permissions.js
+++ b/lib/permissions/minimally-encoded-thread-permissions.js
@@ -7,6 +7,7 @@
 import { parseThreadPermissionString } from './prefixes.js';
 import type {
   ThreadPermission,
+  ThreadPermissionInfo,
   ThreadPermissionsInfo,
   ThreadRolePermissionsBlob,
 } from '../types/thread-permission-types.js';
@@ -90,6 +91,30 @@
   return bitmask.toString(16);
 };
 
+const threadPermissionsFromBitmaskHex = (
+  permissionsBitmaskHex: string,
+): ThreadPermissionsInfo => {
+  invariant(
+    tHexEncodedPermissionsBitmask.is(permissionsBitmaskHex),
+    'permissionsBitmaskHex must be valid hex string.',
+  );
+
+  const permissionsBitmask = BigInt(`0x${permissionsBitmaskHex}`);
+  const permissions: { [permission: ThreadPermission]: ThreadPermissionInfo } =
+    {};
+
+  for (const [key, permissionBitmask] of entries(
+    minimallyEncodedThreadPermissions,
+  )) {
+    if ((permissionsBitmask & permissionBitmask) !== BigInt(0)) {
+      permissions[key] = { value: true, source: 'null' };
+    } else {
+      permissions[key] = { value: false, source: null };
+    }
+  }
+  return permissions;
+};
+
 const hasPermission = (
   permissionsBitmaskHex: string,
   permission: ThreadPermission,
@@ -280,6 +305,7 @@
 
 export {
   permissionsToBitmaskHex,
+  threadPermissionsFromBitmaskHex,
   hasPermission,
   rolePermissionToBitmaskHex,
   decodeRolePermissionBitmask,
diff --git a/lib/permissions/minimally-encoded-thread-permissions.test.js b/lib/permissions/minimally-encoded-thread-permissions.test.js
--- a/lib/permissions/minimally-encoded-thread-permissions.test.js
+++ b/lib/permissions/minimally-encoded-thread-permissions.test.js
@@ -15,32 +15,36 @@
   minimallyEncodeRawThreadInfo,
   permissionsToBitmaskHex,
   rolePermissionToBitmaskHex,
+  threadPermissionsFromBitmaskHex,
   threadRolePermissionsBlobToBitmaskArray,
 } from './minimally-encoded-thread-permissions.js';
 import type { ThreadRolePermissionsBlob } from '../types/thread-permission-types.js';
 
-describe('minimallyEncodedThreadPermissions', () => {
-  const permissions = {
-    know_of: { value: true, source: '1' },
-    visible: { value: true, source: '1' },
-    voiced: { value: true, source: '1' },
-    edit_entries: { value: true, source: '1' },
-    edit_thread: { value: true, source: '1' },
-    edit_thread_description: { value: true, source: '1' },
-    edit_thread_color: { value: true, source: '1' },
-    delete_thread: { value: true, source: '1' },
-    create_subthreads: { value: true, source: '1' },
-    create_sidebars: { value: true, source: '1' },
-    join_thread: { value: false, source: null },
-    edit_permissions: { value: false, source: null },
-    add_members: { value: true, source: '1' },
-    remove_members: { value: true, source: '1' },
-    change_role: { value: true, source: '1' },
-    leave_thread: { value: false, source: null },
-    react_to_message: { value: true, source: '1' },
-    edit_message: { value: true, source: '1' },
-  };
+const permissions = {
+  know_of: { value: true, source: '1' },
+  visible: { value: true, source: '1' },
+  voiced: { value: true, source: '1' },
+  edit_entries: { value: true, source: '1' },
+  edit_thread: { value: true, source: '1' },
+  edit_thread_description: { value: true, source: '1' },
+  edit_thread_color: { value: true, source: '1' },
+  delete_thread: { value: true, source: '1' },
+  create_subthreads: { value: true, source: '1' },
+  create_sidebars: { value: true, source: '1' },
+  join_thread: { value: false, source: null },
+  edit_permissions: { value: false, source: null },
+  add_members: { value: true, source: '1' },
+  remove_members: { value: true, source: '1' },
+  change_role: { value: true, source: '1' },
+  leave_thread: { value: false, source: null },
+  react_to_message: { value: true, source: '1' },
+  edit_message: { value: true, source: '1' },
+  edit_thread_avatar: { value: false, source: null },
+  manage_pins: { value: false, source: null },
+  manage_invite_links: { value: false, source: null },
+};
 
+describe('minimallyEncodedThreadPermissions', () => {
   it('should encode ThreadPermissionsInfo as bitmask', () => {
     const permissionsBitmask = permissionsToBitmaskHex(permissions);
     expect(permissionsBitmask).toBe('373ff');
@@ -66,6 +70,42 @@
   });
 });
 
+describe('threadPermissionsFromBitmaskHex', () => {
+  const expectedDecodedThreadPermissions = {
+    know_of: { value: true, source: 'null' },
+    visible: { value: true, source: 'null' },
+    voiced: { value: true, source: 'null' },
+    edit_entries: { value: true, source: 'null' },
+    edit_thread: { value: true, source: 'null' },
+    edit_thread_description: { value: true, source: 'null' },
+    edit_thread_color: { value: true, source: 'null' },
+    delete_thread: { value: true, source: 'null' },
+    create_subthreads: { value: true, source: 'null' },
+    create_sidebars: { value: true, source: 'null' },
+    join_thread: { value: false, source: null },
+    edit_permissions: { value: false, source: null },
+    add_members: { value: true, source: 'null' },
+    remove_members: { value: true, source: 'null' },
+    change_role: { value: true, source: 'null' },
+    leave_thread: { value: false, source: null },
+    react_to_message: { value: true, source: 'null' },
+    edit_message: { value: true, source: 'null' },
+    edit_thread_avatar: { value: false, source: null },
+    manage_pins: { value: false, source: null },
+    manage_invite_links: { value: false, source: null },
+  };
+
+  it('should decode ThreadPermissionsInfo from bitmask', () => {
+    const permissionsBitmask = permissionsToBitmaskHex(permissions);
+    const decodedThreadPermissions =
+      threadPermissionsFromBitmaskHex(permissionsBitmask);
+
+    expect(decodedThreadPermissions).toStrictEqual(
+      expectedDecodedThreadPermissions,
+    );
+  });
+});
+
 describe('rolePermissionToBitmaskHex', () => {
   it('should encode `child_opentoplevel_visible` successfully', () => {
     expect(rolePermissionToBitmaskHex('child_opentoplevel_visible')).toBe(