diff --git a/apps/entities/appcenter.py b/apps/entities/appcenter.py
new file mode 100644
index 0000000000000000000000000000000000000000..5445fb2808f03b4ec000e7c16fb3e53f831b47cb
--- /dev/null
+++ b/apps/entities/appcenter.py
@@ -0,0 +1,52 @@
+"""应用中心相关 API 基础数据结构定义
+
+Copyright (c) Huawei Technologies Co., Ltd. 2024-2025. All rights reserved.
+"""
+from typing import Optional
+
+from pydantic import BaseModel, Field
+
+from apps.entities.enum_var import AppPermissionType
+from apps.entities.flow import AppLink
+
+
+class AppCenterCardItem(BaseModel):
+    """应用中心卡片数据结构"""
+
+    app_id: str = Field(..., alias="appId", description="应用ID")
+    icon: str = Field(..., description="应用图标")
+    name: str = Field(..., description="应用名称")
+    description: str = Field(..., description="应用简介")
+    author: str = Field(..., description="应用作者")
+    favorited: bool = Field(..., description="是否已收藏")
+    published: bool = Field(default=True, description="是否已发布")
+
+
+class AppPermissionData(BaseModel):
+    """应用权限数据结构"""
+
+    type: AppPermissionType = Field(
+        default=AppPermissionType.PRIVATE,
+        alias="visibility",
+        description="可见性（public/private/protected）",
+    )
+    users: Optional[list[str]] = Field(
+        None,
+        alias="authorizedUsers",
+        description="附加人员名单（如果可见性为部分人可见）",
+    )
+
+
+class AppData(BaseModel):
+    """应用信息数据结构"""
+
+    icon: str = Field(default="", description="图标")
+    name: str = Field(..., max_length=20, description="应用名称")
+    description: str = Field(..., max_length=150, description="应用简介")
+    links: list[AppLink] = Field(default=[], description="相关链接", max_length=5)
+    first_questions: list[str] = Field(
+        default=[], alias="recommendedQuestions", description="推荐问题", max_length=3)
+    history_len: int = Field(3, alias="dialogRounds", ge=1, le=10, description="对话轮次（1～10）")
+    permission: AppPermissionData = Field(
+        default_factory=lambda: AppPermissionData(authorizedUsers=None), description="权限配置")
+    workflows: list[str] = Field(default=[], description="工作流ID列表")
diff --git a/apps/entities/collection.py b/apps/entities/collection.py
index 3f727790bad7424619dff82394c0df41c340a3f0..7e486e49322d69ac75990d2f83dfba81f2595c05 100644
--- a/apps/entities/collection.py
+++ b/apps/entities/collection.py
@@ -33,6 +33,13 @@ class UserDomainData(BaseModel):
     count: int
 
 
+class AppUsageData(BaseModel):
+    """User表子项：应用使用情况数据"""
+
+    count: int = 0
+    last_used: float = Field(default_factory=lambda: round(datetime.now(tz=timezone.utc).timestamp(), 3))
+
+
 class User(BaseModel):
     """用户信息
 
@@ -49,6 +56,7 @@ class User(BaseModel):
     kb_id: Optional[str] = None
     conversations: list[str] = []
     domains: list[UserDomainData] = []
+    app_usage: dict[str, AppUsageData] = {}
 
 
 class Conversation(BaseModel):
@@ -174,6 +182,8 @@ class Domain(BaseModel):
     name: str
     definition: str
     updated_at: float = Field(default_factory=lambda: round(datetime.now(tz=timezone.utc).timestamp(), 3))
+
+
 class NodeMetaData(BaseModel):
     """节点元数据"""
     pass
diff --git a/apps/entities/enum_var.py b/apps/entities/enum_var.py
index f87ee9fa31dcbca129aed61156d6ad71780ca2ce..d4ec50e68d9bb40ef74d7ef38253d5da3f61d7c9 100644
--- a/apps/entities/enum_var.py
+++ b/apps/entities/enum_var.py
@@ -95,3 +95,12 @@ class SaveType(str, Enum):
     APP = "app"
     SERVICE = "service"
     FLOW = "flow"
+
+
+class SearchType(str, Enum):
+    """搜索类型"""
+
+    ALL = "all"
+    NAME = "name"
+    DESCRIPTION = "description"
+    AUTHOR = "author"
diff --git a/apps/entities/flow.py b/apps/entities/flow.py
index d1b2111d033c624b865a508c2e2b218228aef39d..1846a0eb3a9776dc3b1b467a5c5988961a15633b 100644
--- a/apps/entities/flow.py
+++ b/apps/entities/flow.py
@@ -4,7 +4,7 @@ Copyright (c) Huawei Technologies Co., Ltd. 2023-2024. All rights reserved.
 """
 from typing import Any, Optional
 
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, Field, HttpUrl
 
 from apps.entities.enum_var import (
     AppPermissionType,
@@ -117,7 +117,7 @@ class AppLink(BaseModel):
     """App的相关链接"""
 
     title: str = Field(description="链接标题")
-    url: str = Field(description="链接URL")
+    url: HttpUrl = Field(..., description="链接地址")
 
 
 class AppPermission(BaseModel):
diff --git a/apps/entities/pool.py b/apps/entities/pool.py
index 1d06e674e5a158b256165758f5e488df9d607d62..a5bcc99d723b908f68bb4f28a3a0a2d23910b646 100644
--- a/apps/entities/pool.py
+++ b/apps/entities/pool.py
@@ -8,6 +8,7 @@ from typing import Any, Optional
 from pydantic import BaseModel, Field
 
 from apps.entities.enum_var import CallType
+from apps.entities.flow import AppLink, AppPermission
 
 
 class PoolBase(BaseModel):
@@ -72,6 +73,13 @@ class AppPool(PoolBase):
     collection: app
     """
 
-    author: str
+    author: str = Field(description="作者的用户ID")
+    icon: str = Field(description="应用图标")
+    published: bool = Field(description="是否发布", default=False)
+    links: list[AppLink] = Field(description="相关链接", default=[])
+    first_questions: list[str] = Field(description="推荐问题", default=[])
+    history_len: int = Field(3, ge=1, le=10, description="对话轮次（1～10）")
+    permission: AppPermission = Field(description="应用权限配置", default=AppPermission())
     flows: list[AppFlow] = Field(description="Flow列表", default=[])
+    favorites: list[str] = Field(description="收藏此应用的用户列表", default=[])
     hashes: dict[str, str] = Field(description="关联文件的hash值", default={})
diff --git a/apps/entities/request_data.py b/apps/entities/request_data.py
index bdb8693ab350831525cc4a4035df405b1975d684..4282d02b2036d33ab2ca910f3f0f4aa5e40fbbde 100644
--- a/apps/entities/request_data.py
+++ b/apps/entities/request_data.py
@@ -6,8 +6,10 @@ from typing import Optional
 
 from pydantic import BaseModel, Field
 
+from apps.entities.appcenter import AppData
+from apps.entities.flow import EdgeItem, FlowItem, NodeItem, PositionItem
 from apps.entities.task import RequestDataPlugin
-from apps.entities.flow import PositionItem,FlowItem,NodeItem,EdgeItem
+
 
 class RequestDataFeatures(BaseModel):
     """POST /api/chat的features字段数据"""
@@ -59,6 +61,18 @@ class AbuseProcessRequest(BaseModel):
     is_deletion: int
 
 
+class CreateAppRequest(AppData):
+    """POST /api/app 请求数据结构"""
+
+    app_id: Optional[str] = Field(None, alias="appId", description="应用ID")
+
+
+class ModFavAppRequest(BaseModel):
+    """PUT /api/app/{appId} 请求数据结构"""
+
+    favorited: bool = Field(..., description="是否收藏")
+
+
 class ClientSessionData(BaseModel):
     """客户端Session信息"""
 
diff --git a/apps/entities/response_data.py b/apps/entities/response_data.py
index fcb9c4d878a9dff6a445fa8081621e0982b5dbf7..f7ef82bf1b1d9bbee6fb8bae87fee49cce2decd5 100644
--- a/apps/entities/response_data.py
+++ b/apps/entities/response_data.py
@@ -6,6 +6,7 @@ from typing import Any, Optional
 
 from pydantic import BaseModel, Field
 
+from apps.entities.appcenter import AppCenterCardItem, AppData
 from apps.entities.collection import Blacklist, Document, NodeMetaData
 from apps.entities.enum_var import DocumentStatus
 from apps.entities.flow import EdgeItem, FlowItem, NodeItem, PositionItem
@@ -232,6 +233,77 @@ class GetKnowledgeIDRsp(ResponseData):
     result: GetKnowledgeIDMsg
 
 
+class BaseAppOperationMsg(BaseModel):
+    """基础应用操作Result数据结构"""
+
+    app_id: str = Field(..., alias="appId", description="应用ID")
+
+
+class BaseAppOperationRsp(ResponseData):
+    """基础应用操作返回数据结构"""
+
+    result: BaseAppOperationMsg
+
+
+class GetAppPropertyMsg(AppData):
+    """GET /api/app/{appId} Result数据结构"""
+
+    app_id: str = Field(..., alias="appId", description="应用ID")
+    published: bool = Field(..., description="是否已发布")
+
+
+class GetAppPropertyRsp(ResponseData):
+    """GET /api/app/{appId} 返回数据结构"""
+
+    result: GetAppPropertyMsg
+
+
+class ModFavAppMsg(BaseModel):
+    """PUT /api/app/{appId} Result数据结构"""
+
+    app_id: str = Field(..., alias="appId", description="应用ID")
+    favorited: bool = Field(..., description="是否已收藏")
+
+
+class ModFavAppRsp(ResponseData):
+    """PUT /api/app/{appId} 返回数据结构"""
+
+    result: ModFavAppMsg
+
+
+class GetAppListMsg(BaseModel):
+    """GET /api/app Result数据结构"""
+
+    page_number: int = Field(..., alias="currentPage", description="当前页码")
+    page_count: int = Field(..., alias="totalPages", description="总页数")
+    applications: list[AppCenterCardItem] = Field(..., description="应用列表")
+
+
+class GetAppListRsp(ResponseData):
+    """GET /api/app 返回数据结构"""
+
+    result: GetAppListMsg
+
+
+class RecentAppListItem(BaseModel):
+    """GET /api/app/recent 列表项数据结构"""
+
+    app_id: str = Field(..., alias="appId", description="应用ID")
+    name: str = Field(..., description="应用名称")
+
+
+class RecentAppList(BaseModel):
+    """GET /api/app/recent Result数据结构"""
+
+    applications: list[RecentAppListItem] = Field(..., description="最近使用的应用列表")
+
+
+class GetRecentAppListRsp(ResponseData):
+    """GET /api/app/recent 返回数据结构"""
+
+    result: RecentAppList
+
+
 class NodeMetaDataItem(BaseModel):
     """GET /api/flow/node/metadata 单个节点元数据结构"""
     api_id: str = Field(alias="apiId")