diff --git a/itd/client.py b/itd/client.py
index f2d4414..714f5cd 100644
--- a/itd/client.py
+++ b/itd/client.py
@@ -2,7 +2,7 @@ from uuid import UUID
 from _io import BufferedReader
 from typing import cast
 
-from requests.exceptions import HTTPError
+from requests.exceptions import HTTPError, ConnectionError
 
 from itd.routes.users import get_user, update_profile, follow, unfollow, get_followers, get_following, update_privacy
 from itd.routes.etc import get_top_clans, get_who_to_follow, get_platform_status
@@ -17,13 +17,16 @@ from itd.routes.auth import refresh_token, change_password, logout
 from itd.routes.verification import verificate, get_verification_status
 
 from itd.models.comment import Comment
+from itd.models.notification import Notification
+from itd.models.post import Post, NewPost
 from itd.models.clan import Clan
+from itd.models.hashtag import Hashtag
 from itd.models.user import User, UserProfileUpdate, UserPrivacy, UserFollower, UserWhoToFollow
 from itd.models.pagination import Pagination
 from itd.models.verification import Verification, VerificationStatus
 
 from itd.request import set_cookies
-from itd.exceptions import NoCookie, NoAuthData, SamePassword, InvalidOldPassword, NotFound, ValidationError, UserBanned, PendingRequestExists
+from itd.exceptions import NoCookie, NoAuthData, SamePassword, InvalidOldPassword, NotFound, ValidationError, UserBanned, PendingRequestExists, Forbidden, UsernameTaken
 
 
 def refresh_on_error(func):
@@ -35,6 +38,9 @@ def refresh_on_error(func):
                 self.refresh_auth()
                 return func(self, *args, **kwargs)
             raise e
+        except ConnectionError:
+            self.refresh_auth()
+            return func(self, *args, **kwargs)
     return wrapper
 
 
@@ -166,6 +172,8 @@ class Client:
         res = update_profile(self.token, bio, display_name, username, banner_id)
         if res.status_code == 422 and 'found' in res.json():
             raise ValidationError(*list(res.json()['found'].items())[0])
+        if res.json().get('error', {}).get('code') == 'USERNAME_TAKEN':
+            raise UsernameTaken()
         res.raise_for_status()
 
         return UserProfileUpdate.model_validate(res.json())
@@ -354,6 +362,7 @@ class Client:
 
         Raises:
             ValidationError: Ошибка валидации
+            NotFound: Пост не найден
 
         Returns:
             Comment: Комментарий
@@ -379,6 +388,7 @@ class Client:
 
         Raises:
             ValidationError: Ошибка валидации
+            NotFound: Пользователь или комментарий не найден
 
         Returns:
             Comment: Комментарий
@@ -397,56 +407,191 @@ class Client:
 
     @refresh_on_error
     def get_comments(self, post_id: UUID, limit: int = 20, cursor: int = 0, sort: str = 'popular') -> tuple[list[Comment], Pagination]:
+        """Получить список комментариев
+
+        Args:
+            post_id (UUID): UUID поста
+            limit (int, optional): Лимит. Defaults to 20.
+            cursor (int, optional): Курсор (сколько пропустить). Defaults to 0.
+            sort (str, optional): Сортировка. Defaults to 'popular'.
+
+        Raises:
+            NotFound: Пост не найден
+
+        Returns:
+            list[Comment]: Список комментариев
+            Pagination: Пагинация
+        """
         res = get_comments(self.token, post_id, limit, cursor, sort)
         if res.json().get('error', {}).get('code') == 'NOT_FOUND':
             raise NotFound('Post')
         res.raise_for_status()
         data = res.json()['data']
 
-        return [Comment.model_validate(comment) for comment in data['comments']], Pagination(page=(cursor // limit) or 1, limit=limit, total=data['total'], hasMore=data['hasMore'])
+        return [Comment.model_validate(comment) for comment in data['comments']], Pagination(page=(cursor // limit) or 1, limit=limit, total=data['total'], hasMore=data['hasMore'], nextCursor=None)
 
     @refresh_on_error
-    def like_comment(self, id: UUID):
-        return like_comment(self.token, id)
+    def like_comment(self, id: UUID) -> int:
+        """Лайкнуть комментарий
+
+        Args:
+            id (UUID): UUID комментария
+
+        Raises:
+            NotFound: Комментарий не найден
+
+        Returns:
+            int: Количество лайков
+        """
+        res = like_comment(self.token, id)
+        if res.json().get('error', {}).get('code') == 'NOT_FOUND':
+            raise NotFound('Comment')
+        res.raise_for_status()
+
+        return res.json()['likesCount']
 
     @refresh_on_error
-    def unlike_comment(self, id: UUID):
-        return unlike_comment(self.token, id)
+    def unlike_comment(self, id: UUID) -> int:
+        """Убрать лайк с комментария
+
+        Args:
+            id (UUID): UUID комментария
+
+        Raises:
+            NotFound: Комментарий не найден
+
+        Returns:
+            int: Количество лайков
+        """
+        res = unlike_comment(self.token, id)
+        if res.json().get('error', {}).get('code') == 'NOT_FOUND':
+            raise NotFound('Comment')
+        res.raise_for_status()
+
+        return res.json()['likesCount']
 
     @refresh_on_error
-    def delete_comment(self, id: UUID):
-        return delete_comment(self.token, id)
+    def delete_comment(self, id: UUID) -> None:
+        """Удалить комментарий
+
+        Args:
+            id (UUID): UUID комментария
+
+        Raises:
+            NotFound: Комментарий не найден
+            Forbidden: Нет прав на удаление
+        """
+        res = delete_comment(self.token, id)
+        if res.status_code == 204:
+            return
+        if res.json().get('error', {}).get('code') == 'NOT_FOUND':
+            raise NotFound('Comment')
+        if res.json().get('error', {}).get('code') == 'FORBIDDEN':
+            raise Forbidden('delete comment')
+        res.raise_for_status()
 
 
     @refresh_on_error
-    def get_hastags(self, limit: int = 10):
-        return get_hastags(self.token, limit)
+    def get_hastags(self, limit: int = 10) -> list[Hashtag]:
+        """Получить список популярных хэштэгов
+
+        Args:
+            limit (int, optional): Лимит. Defaults to 10.
+
+        Returns:
+            list[Hashtag]: Список хэштэгов
+        """
+        res = get_hastags(self.token, limit)
+        res.raise_for_status()
+
+        return [Hashtag.model_validate(hashtag) for hashtag in res.json()['data']['hashtags']]
 
     @refresh_on_error
-    def get_posts_by_hashtag(self, hashtag: str, limit: int = 20, cursor: int = 0):
-        return get_posts_by_hastag(self.token, hashtag, limit, cursor)
+    def get_posts_by_hashtag(self, hashtag: str, limit: int = 20, cursor: UUID | None = None) -> tuple[Hashtag | None, list[Post], Pagination]:
+        """Получить посты по хэштэгу
+
+        Args:
+            hashtag (str): Хэштэг (без #)
+            limit (int, optional): Лимит. Defaults to 20.
+            cursor (UUID | None, optional): Курсор (UUID последнего поста, после которого брать данные). Defaults to None.
+
+        Returns:
+            Hashtag | None: Хэштэг
+            list[Post]: Посты
+            Pagination: Пагинация
+        """
+        res = get_posts_by_hastag(self.token, hashtag, limit, cursor)
+        res.raise_for_status()
+        data = res.json()['data']
+
+        return Hashtag.model_validate(data['hashtag']), [Post.model_validate(post) for post in data['posts']], Pagination.model_validate(data['pagination'])
 
 
     @refresh_on_error
-    def get_notifications(self, limit: int = 20, cursor: int = 0, type: str | None = None):
-        return get_notifications(self.token, limit, cursor, type)
+    def get_notifications(self, limit: int = 20, offset: int = 0) -> tuple[list[Notification], Pagination]:
+        """Получить уведомления
+
+        Args:
+            limit (int, optional): Лимит. Defaults to 20.
+            offset (int, optional): Сдвиг. Defaults to 0.
+
+        Returns:
+            list[Notification]: Уведомления
+            Pagination: Пагинация
+        """
+        res = get_notifications(self.token, limit, offset)
+        res.raise_for_status()
+
+        return (
+            [Notification.model_validate(notification) for notification in res.json()['notifications']],
+            Pagination(page=(offset // limit) + 1, limit=limit, hasMore=res.json()['hasMore'], nextCursor=None)
+        )
 
     @refresh_on_error
-    def mark_as_read(self, id: str):
-        return mark_as_read(self.token, id)
+    def mark_as_read(self, id: UUID) -> bool:
+        """Прочитать уведомление
+
+        Args:
+            id (UUID): UUID уведомления
+
+        Returns:
+            bool: Успешно (False - уже прочитано)
+        """
+        res = mark_as_read(self.token, id)
+        res.raise_for_status()
+
+        return res.json()['success']
 
     @refresh_on_error
-    def mark_all_as_read(self):
-        return mark_all_as_read(self.token)
-
-    @refresh_on_error
-    def get_unread_notifications_count(self):
-        return get_unread_notifications_count(self.token)
+    def mark_all_as_read(self) -> None:
+        """Прочитать все уведомления"""
+        res = mark_all_as_read(self.token)
+        res.raise_for_status()
 
 
     @refresh_on_error
-    def create_post(self, content: str, wall_recipient_id: int | None = None, attach_ids: list[str] = []):
-        return create_post(self.token, content, wall_recipient_id, attach_ids)
+    def get_unread_notifications_count(self) -> int:
+        """Получить количество непрочитанных уведомлений
+
+        Returns:
+            int: Количество
+        """
+        res = get_unread_notifications_count(self.token)
+        res.raise_for_status()
+
+        return res.json()['count']
+
+
+    @refresh_on_error
+    def create_post(self, content: str, wall_recipient_id: UUID | None = None, attach_ids: list[UUID] = []) -> NewPost:
+        res = create_post(self.token, content, wall_recipient_id, attach_ids)
+        if res.json().get('error', {}).get('code') == 'NOT_FOUND':
+            raise NotFound('Wall recipient')
+        if res.status_code == 422 and 'found' in res.json():
+            raise ValidationError(*list(res.json()['found'].items())[0])
+        res.raise_for_status()
+
+        return NewPost.model_validate(res.json())
 
     @refresh_on_error
     def get_posts(self, username: str | None = None, limit: int = 20, cursor: int = 0, sort: str = '', tab: str = ''):
@@ -513,7 +658,7 @@ class Client:
 
     @refresh_on_error
     def upload_file(self, name: str, data: BufferedReader):
-        return upload_file(self.token, name, data)
+        return upload_file(self.token, name, data).json()
 
     def update_banner(self, name: str) -> UserProfileUpdate:
         id = self.upload_file(name, cast(BufferedReader, open(name, 'rb')))['id']
diff --git a/itd/exceptions.py b/itd/exceptions.py
index 68c4d8b..f1cc39f 100644
--- a/itd/exceptions.py
+++ b/itd/exceptions.py
@@ -48,4 +48,14 @@ class RateLimitExceeded(Exception):
     def __init__(self, retry_after: int):
         self.retry_after = retry_after
     def __str__(self):
-        return f'Rate limit exceeded - too much requests. Retry after {self.retry_after} seconds'
\ No newline at end of file
+        return f'Rate limit exceeded - too much requests. Retry after {self.retry_after} seconds'
+
+class Forbidden(Exception):
+    def __init__(self, action: str):
+        self.action = action
+    def __str__(self):
+        return f'Forbidden to {self.action}'
+
+class UsernameTaken(Exception):
+    def __str__(self):
+        return 'Username is already taken'
\ No newline at end of file
diff --git a/itd/models/_text.py b/itd/models/_text.py
index 49238a7..96aa99e 100644
--- a/itd/models/_text.py
+++ b/itd/models/_text.py
@@ -3,15 +3,10 @@ from datetime import datetime
 
 from pydantic import BaseModel, Field, field_validator
 
-from itd.models.user import UserPost
-from itd.models.file import Attach
-
 
 class TextObject(BaseModel):
     id: UUID
     content: str
-    author: UserPost
-    attachments: list[Attach] = []
 
     created_at: datetime = Field(alias='createdAt')
 
diff --git a/itd/models/comment.py b/itd/models/comment.py
index efcd499..1330225 100644
--- a/itd/models/comment.py
+++ b/itd/models/comment.py
@@ -2,12 +2,16 @@ from pydantic import Field
 
 from itd.models._text import TextObject
 from itd.models.user import UserPost
+from itd.models.file import Attach
 
 
 class Comment(TextObject):
+    author: UserPost
+
     likes_count: int = Field(0, alias='likesCount')
     replies_count: int = Field(0, alias='repliesCount')
     is_liked: bool = Field(False, alias='isLiked')
 
+    attachments: list[Attach] = []
     replies: list['Comment'] = []
     reply_to: UserPost | None = None # author of replied comment, if this comment is reply
\ No newline at end of file
diff --git a/itd/models/file.py b/itd/models/file.py
index b732b7e..f7f34e7 100644
--- a/itd/models/file.py
+++ b/itd/models/file.py
@@ -12,15 +12,18 @@ class File(BaseModel):
     size: int
 
 
-class Attach(BaseModel):
+class PostAttach(BaseModel):
     id: UUID
     type: AttachType = AttachType.IMAGE
     url: str
     thumbnail_url: str | None = Field(None, alias='thumbnailUrl')
+    width: int | None = None
+    height: int | None = None
+
+
+class Attach(PostAttach):
     filename: str
     mime_type: str = Field(alias='mimeType')
     size: int
-    width: int | None = None
-    height: int | None = None
     duration: int | None = None
     order: int = 0
\ No newline at end of file
diff --git a/itd/models/notification.py b/itd/models/notification.py
index 7ea3ea9..4dca9fe 100644
--- a/itd/models/notification.py
+++ b/itd/models/notification.py
@@ -11,7 +11,7 @@ class Notification(BaseModel):
     type: NotificationType
 
     target_type: NotificationTargetType | None = Field(None, alias='targetType') # none - follows, other - NotificationTragetType.POST
-    target_id: int | None = Field(None, alias='targetId') # none - follows
+    target_id: UUID | None = Field(None, alias='targetId') # none - follows
 
     preview: str | None = None # follow - none, comment/reply - content, repost - original post content, like - post content, wall_post - wall post content
 
diff --git a/itd/models/pagination.py b/itd/models/pagination.py
index df81f56..e140b8b 100644
--- a/itd/models/pagination.py
+++ b/itd/models/pagination.py
@@ -1,7 +1,10 @@
+from uuid import UUID
+
 from pydantic import BaseModel, Field
 
 class Pagination(BaseModel):
-    page: int = 1
+    page: int | None = 1
     limit: int = 20
     total: int | None = None
-    has_more: bool = Field(True, alias='hasMore')
\ No newline at end of file
+    has_more: bool = Field(True, alias='hasMore')
+    next_cursor: UUID | None = Field(None, alias='nextCursor')
\ No newline at end of file
diff --git a/itd/models/post.py b/itd/models/post.py
index dfe33dd..f07c36c 100644
--- a/itd/models/post.py
+++ b/itd/models/post.py
@@ -1,29 +1,47 @@
+from uuid import UUID
+
 from pydantic import Field
 
-from itd.models.user import UserPost
+from itd.models.user import UserPost, UserNewPost
 from itd.models._text import TextObject
+from itd.models.file import PostAttach
+from itd.models.comment import Comment
 
 
-class PostShort(TextObject):
+class _PostShort(TextObject):
     likes_count: int = Field(0, alias='likesCount')
     comments_count: int = Field(0, alias='commentsCount')
     reposts_count: int = Field(0, alias='repostsCount')
     views_count: int = Field(0, alias='viewsCount')
 
 
+class PostShort(_PostShort):
+    author: UserPost
+
+
 class OriginalPost(PostShort):
     is_deleted: bool = Field(False, alias='isDeleted')
 
 
-class Post(PostShort):
+class _Post(_PostShort):
     is_liked: bool = Field(False, alias='isLiked')
     is_reposted: bool = Field(False, alias='isReposted')
     is_viewed: bool = Field(False, alias='isViewed')
     is_owner: bool = Field(False, alias='isOwner')
 
-    comments: list = []
+    attachments: list[PostAttach] = []
+    comments: list[Comment] = []
 
     original_post: OriginalPost | None = None
 
-    wall_recipient_id: int | None = None
-    wall_recipient: UserPost | None = None
+    wall_recipient_id: UUID | None = Field(None, alias='wallRecipientId')
+    wall_recipient: UserPost | None = Field(None, alias='wallRecipient')
+
+
+class Post(_Post, PostShort):
+    pass
+
+
+class NewPost(_Post):
+    author: UserNewPost
+
diff --git a/itd/models/user.py b/itd/models/user.py
index 0c717ae..a35ff30 100644
--- a/itd/models/user.py
+++ b/itd/models/user.py
@@ -19,22 +19,23 @@ class UserProfileUpdate(BaseModel):
 
     updated_at: datetime | None = Field(None, alias='updatedAt')
 
-    model_config = {'populate_by_name': True}
 
-
-class UserNotification(BaseModel):
-    id: UUID
+class UserNewPost(BaseModel):
     username: str | None = None
     display_name: str = Field(alias='displayName')
     avatar: str
 
-    model_config = {'populate_by_name': True}
-
-
-class UserPost(UserNotification):
     verified: bool = False
 
 
+class UserNotification(UserNewPost):
+    id: UUID
+
+
+class UserPost(UserNotification, UserNewPost):
+    pass
+
+
 class UserWhoToFollow(UserPost):
     followers_count: int = Field(0, alias='followersCount')
 
diff --git a/itd/request.py b/itd/request.py
index a63cf10..909ed31 100644
--- a/itd/request.py
+++ b/itd/request.py
@@ -1,6 +1,7 @@
 from _io import BufferedReader
 
 from requests import Session
+from requests.exceptions import JSONDecodeError
 
 from itd.exceptions import InvalidToken, InvalidCookie, RateLimitExceeded
 
@@ -29,10 +30,13 @@ def fetch(token: str, method: str, url: str, params: dict = {}, files: dict[str,
     if method == "get":
         res = s.get(base, timeout=120 if files else 20, params=params, headers=headers)
     else:
-        res = s.request(method.upper(), base, timeout=20, json=params, headers=headers, files=files)
+        res = s.request(method.upper(), base, timeout=120 if files else 20, json=params, headers=headers, files=files)
 
-    if res.json().get('error', {}).get('code') == 'RATE_LIMIT_EXCEEDED':
-        raise RateLimitExceeded(res.json()['error'].get('retryAfter', 0))
+    try:
+        if res.json().get('error', {}).get('code') == 'RATE_LIMIT_EXCEEDED':
+            raise RateLimitExceeded(res.json()['error'].get('retryAfter', 0))
+    except JSONDecodeError:
+        pass
 
     print(res.text)
     return res
@@ -75,9 +79,12 @@ def auth_fetch(cookies: str, method: str, url: str, params: dict = {}, token: st
     # print(res.text)
     if res.text == 'UNAUTHORIZED':
         raise InvalidToken()
-    if res.json().get('error', {}).get('code') == 'RATE_LIMIT_EXCEEDED':
-        raise RateLimitExceeded(res.json()['error'].get('retryAfter', 0))
-    if res.json().get('error', {}).get('code') in ('SESSION_NOT_FOUND', 'REFRESH_TOKEN_MISSING'):
-        raise InvalidCookie()
+    try:
+        if res.json().get('error', {}).get('code') == 'RATE_LIMIT_EXCEEDED':
+            raise RateLimitExceeded(res.json()['error'].get('retryAfter', 0))
+        if res.json().get('error', {}).get('code') in ('SESSION_NOT_FOUND', 'REFRESH_TOKEN_MISSING'):
+            raise InvalidCookie()
+    except JSONDecodeError:
+        pass
 
     return res
diff --git a/itd/routes/hashtags.py b/itd/routes/hashtags.py
index e6e9a63..72404c4 100644
--- a/itd/routes/hashtags.py
+++ b/itd/routes/hashtags.py
@@ -1,7 +1,8 @@
+from uuid import UUID
 from itd.request import fetch
 
 def get_hastags(token: str, limit: int = 10):
     return fetch(token, 'get', 'hashtags/trending', {'limit': limit})
 
-def get_posts_by_hastag(token: str, hashtag: str, limit: int = 20, cursor: int = 0):
+def get_posts_by_hastag(token: str, hashtag: str, limit: int = 20, cursor: UUID | None = None):
     return fetch(token, 'get', f'hashtags/{hashtag}/posts', {'limit': limit, 'cursor': cursor})
diff --git a/itd/routes/notifications.py b/itd/routes/notifications.py
index 8ad6759..de0a741 100644
--- a/itd/routes/notifications.py
+++ b/itd/routes/notifications.py
@@ -1,16 +1,15 @@
+from uuid import UUID
+
 from itd.request import fetch
 
-def get_notifications(token: str, limit: int = 20, cursor: int = 0, type: str | None = None):
-    data = {'limit': str(limit), 'cursor': str(cursor)}
-    if type:
-        data['type'] = type
-    return fetch(token, 'get', 'notifications', data)
+def get_notifications(token: str, limit: int = 20, offset: int = 0):
+    return fetch(token, 'get', 'notifications', {'limit': limit, 'offset': offset})
 
-def mark_as_read(token: str, id: str):
-    return fetch(token, 'post', f'notification/{id}/read')
+def mark_as_read(token: str, id: UUID):
+    return fetch(token, 'post', f'notifications/{id}/read')
 
 def mark_all_as_read(token: str):
-    return fetch(token, 'post', f'notification/read-all')
+    return fetch(token, 'post', f'notifications/read-all')
 
 def get_unread_notifications_count(token: str):
     return fetch(token, 'get', 'notifications/count')
\ No newline at end of file
diff --git a/itd/routes/posts.py b/itd/routes/posts.py
index b2a0705..97edcd2 100644
--- a/itd/routes/posts.py
+++ b/itd/routes/posts.py
@@ -1,11 +1,13 @@
+from uuid import UUID
+
 from itd.request import fetch
 
-def create_post(token: str, content: str, wall_recipient_id: int | None = None, attach_ids: list[str] = []):
+def create_post(token: str, content: str, wall_recipient_id: UUID | None = None, attach_ids: list[UUID] = []):
     data: dict = {'content': content}
     if wall_recipient_id:
-        data['wallRecipientId'] = wall_recipient_id
+        data['wallRecipientId'] = str(wall_recipient_id)
     if attach_ids:
-        data['attachmentIds'] = attach_ids
+        data['attachmentIds'] = list(map(str, attach_ids))
 
     return fetch(token, 'post', 'posts', data)
 
@@ -20,28 +22,29 @@ def get_posts(token: str, username: str | None = None, limit: int = 20, cursor:
 
     return fetch(token, 'get', 'posts', data)
 
-def get_post(token: str, id: str):
+def get_post(token: str, id: UUID):
     return fetch(token, 'get', f'posts/{id}')
 
-def edit_post(token: str, id: str, content: str):
+def edit_post(token: str, id: UUID, content: str):
     return fetch(token, 'put', f'posts/{id}', {'content': content})
 
-def delete_post(token: str, id: str):
+def delete_post(token: str, id: UUID):
     return fetch(token, 'delete', f'posts/{id}')
 
-def pin_post(token: str, id: str):
+def pin_post(token: str, id: UUID):
     return fetch(token, 'post', f'posts/{id}/pin')
 
-def repost(token: str, id: str, content: str | None = None):
+def repost(token: str, id: UUID, content: str | None = None):
     data = {}
     if content:
         data['content'] = content
     return fetch(token, 'post', f'posts/{id}/repost', data)
 
-def view_post(token: str, id: str):
+def view_post(token: str, id: UUID):
     return fetch(token, 'post', f'posts/{id}/view')
 
 def get_liked_posts(token: str, username: str, limit: int = 20, cursor: int = 0):
     return fetch(token, 'get', f'posts/user/{username}/liked', {'limit': limit, 'cursor': cursor})
 
-# todo post restore
\ No newline at end of file
+# todo post restore
+# todo post like
\ No newline at end of file