diff --git a/API.md b/API.md
index 0a77389c8..2979e6159 100644
--- a/API.md
+++ b/API.md
@@ -47,7 +47,6 @@
     * [Get boot progress](#Get-boot-progress)
     * [Get system version](#Get-system-version)
     * [Get the current time of the system](#Get-the-current-time-of-the-system)
-* [Webhook](#Webhook)
 
 ---
 
@@ -951,6 +950,47 @@ View API token in <kbd>Settings - About</kbd>, request header: `Authorization: T
   ```
     * `id`：Message ID
 
+## Storage
+
+### Set localStorage
+
+This API is similar to the browser's `localStorage.setItem`, but the setting parameter is the entire JSON-formatted data instead of a single key-value pair.
+
+When developing front-end extensions, you should avoid using the browser's `localStorage`, because using the browser's `localStorage` directly will cause data to be incorrectly overwritten or lost when switching between multiple workspaces.
+
+* `/api/storage/setLocalStorage`
+* Parameters
+
+  ```json
+  {
+    "val": {}
+  }
+  ```
+
+* Return value
+
+  ```json
+  {
+    "code": 0,
+    "msg": "",
+    "data": null
+  }
+  ```
+
+### Get localStorage
+
+* `/api/storage/getLocalStorage`
+* No parameters
+* Return value
+
+  ```json
+  {
+    "code": 0,
+    "msg": "",
+    "data": {}
+  }
+  ```
+  
 ## System
 
 ### Get boot progress
diff --git a/API_zh_CN.md b/API_zh_CN.md
index 72d72dffe..fbff27efc 100644
--- a/API_zh_CN.md
+++ b/API_zh_CN.md
@@ -43,11 +43,13 @@
 * [通知](#通知)
     * [推送消息](#推送消息)
     * [推送报错消息](#推送报错消息)
+* [存储](#存储)
+    * [设置 localStorage](#设置-localStorage)
+    * [获取 localStorage](#获取-localStorage)
 * [系统](#系统)
     * [获取启动进度](#获取启动进度)
     * [获取系统版本](#获取系统版本)
     * [获取系统当前时间](#获取系统当前时间)
-* [Webhook](#Webhook)
 
 ---
 
@@ -945,6 +947,47 @@
   ```
     * `id`：消息 ID
 
+## 存储
+
+### 设置 localStorage
+
+该 API 类似浏览器的 `localStorage.setItem`，但是设置参数是整个 JSON 格式的数据，而不是单个键值对。
+
+前端开发扩展时应该避免使用浏览器的 `localStorage`，因为直接使用浏览器的 `localStorage` 会导致多工作空间切换时数据错误覆盖或丢失。
+
+* `/api/storage/setLocalStorage`
+* 参数
+
+  ```json
+  {
+    "val": {}
+  }
+  ```
+  
+* 返回值
+
+  ```json
+  {
+    "code": 0,
+    "msg": "",
+    "data": null
+  }
+  ```
+
+### 获取 localStorage
+
+* `/api/storage/getLocalStorage`
+* 无参数
+* 返回值
+
+  ```json
+  {
+    "code": 0,
+    "msg": "",
+    "data": {}
+  }
+  ```
+  
 ## 系统
 
 ### 获取启动进度