diff --git a/Readme-en.md b/Readme-en.md
index 7dc6876..f36a9fb 100644
--- a/Readme-en.md
+++ b/Readme-en.md
@@ -43,6 +43,24 @@ Use Android Device owner privilege to manage your device.
   - Set screen timeout
   - ...
 
+## API
+
+|    ID     | Description      | Extras                                | Minimum Android version |
+|:---------:|------------------|---------------------------------------|:-----------------------:|
+|   HIDE    | Hide an app      | `package`: package name of target app |                         |
+|  UNHIDE   | Unhide an app    | `package`: package name of target app |                         |
+|  SUSPEND  | Suspend an app   | `package`: package name of target app |            7            |
+| UNSUSPEND | Unsuspend an app | `package`: package name of target app |            7            |
+|   LOCK    | Lock screen      |                                       |                         |
+
+Use this API in adb shell
+```shell
+am broadcast -a com.bintianqi.owndroid.action.<ID> -n com.bintianqi.owndroid/.ApiReceiver --es key <API_KEY>
+# Example
+am broadcast -a com.bintianqi.owndroid.action.HIDE -n com.bintianqi.owndroid/.ApiReceiver --es key abcdefg --es package com.example.app
+```
+If the return value is 0, the operation is successful.
+
 ## License
 
 [License.md](LICENSE.md)
diff --git a/Readme.md b/Readme.md
index 384a296..7d8e2db 100644
--- a/Readme.md
+++ b/Readme.md
@@ -43,6 +43,24 @@
   - 设置屏幕超时
   - ...
 
+## API
+
+|    ID     | 描述       | Extras             | 最小安卓版本 |
+|:---------:|----------|--------------------|:------:|
+|   HIDE    | 隐藏一个应用   | `package`: 目标应用的包名 |        |
+|  UNHIDE   | 取消隐藏一个应用 | `package`: 目标应用的包名 |        |
+|  SUSPEND  | 挂起一个应用   | `package`: 目标应用的包名 |   7    |
+| UNSUSPEND | 取消挂起一个应用 | `package`: 目标应用的包名 |   7    |
+|   LOCK    | 锁屏       |                    |        |
+
+在adb shell中使用API
+```shell
+am broadcast -a com.bintianqi.owndroid.action.<ID> -n com.bintianqi.owndroid/.ApiReceiver --es key <API_KEY>
+# 示例
+am broadcast -a com.bintianqi.owndroid.action.HIDE -n com.bintianqi.owndroid/.ApiReceiver --es key abcdefg --es package com.example.app
+```
+如果返回值为0，操作成功
+
 ## 许可证
 
 [License.md](LICENSE.md)
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 9bfdde6..0ca96a2 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -52,17 +52,6 @@
             android:windowSoftInputMode="adjustResize|stateHidden"
             android:theme="@style/Theme.Transparent">
         </activity>
-        <activity
-            android:name=".AutomationActivity"
-            android:exported="true"
-            android:launchMode="singleInstance"
-            android:excludeFromRecents="true"
-            android:windowSoftInputMode="adjustResize|stateHidden"
-            android:theme="@style/Theme.Transparent">
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN"/>
-            </intent-filter>
-        </activity>
         <activity
             android:name=".InstallAppActivity"
             android:exported="true"
@@ -107,10 +96,14 @@
             android:description="@string/app_name">
         </receiver>
         <receiver
-                android:name=".AutomationReceiver"
-                android:exported="true">
+            android:name=".ApiReceiver"
+            android:exported="true">
             <intent-filter>
-                <action android:name="android.intent.action.MAIN"/>
+                <action android:name="com.bintianqi.owndroid.action.HIDE"/>
+                <action android:name="com.bintianqi.owndroid.action.UNHIDE"/>
+                <action android:name="com.bintianqi.owndroid.action.SUSPEND"/>
+                <action android:name="com.bintianqi.owndroid.action.UNSUSPEND"/>
+                <action android:name="com.bintianqi.owndroid.action.LOCK"/>
             </intent-filter>
         </receiver>
         <provider
diff --git a/app/src/main/java/com/bintianqi/owndroid/ApiReceiver.kt b/app/src/main/java/com/bintianqi/owndroid/ApiReceiver.kt
new file mode 100644
index 0000000..a41aec6
--- /dev/null
+++ b/app/src/main/java/com/bintianqi/owndroid/ApiReceiver.kt
@@ -0,0 +1,51 @@
+package com.bintianqi.owndroid
+
+import android.annotation.SuppressLint
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.util.Log
+import com.bintianqi.owndroid.dpm.getDPM
+import com.bintianqi.owndroid.dpm.getReceiver
+
+class ApiReceiver: BroadcastReceiver() {
+    @SuppressLint("NewApi")
+    override fun onReceive(context: Context, intent: Intent) {
+        val sharedPrefs = context.getSharedPreferences("data", Context.MODE_PRIVATE)
+        if(sharedPrefs.getBoolean("enable_api", false)) return
+        val key = sharedPrefs.getString("api_key", null)
+        if(key != null && key == intent.getStringExtra("key")) {
+            val dpm = context.getDPM()
+            val receiver = context.getReceiver()
+            val app = intent.getStringExtra("package") ?: ""
+            try {
+                val ok = when(intent.action) {
+                    "com.bintianqi.owndroid.action.HIDE" -> dpm.setApplicationHidden(receiver, app, true)
+                    "com.bintianqi.owndroid.action.UNHIDE" -> dpm.setApplicationHidden(receiver, app, false)
+                    "com.bintianqi.owndroid.action.SUSPEND" -> dpm.setPackagesSuspended(receiver, arrayOf(app), true).isEmpty()
+                    "com.bintianqi.owndroid.action.UNSUSPEND" -> dpm.setPackagesSuspended(receiver, arrayOf(app), false).isEmpty()
+                    "com.bintianqi.owndroid.action.LOCK" -> { dpm.lockNow(); true }
+                    else -> {
+                        Log.w(TAG, "Invalid action")
+                        resultData = "Invalid action"
+                        false
+                    }
+                }
+                if(!ok) resultCode = 1
+            } catch(e: Exception) {
+                e.printStackTrace()
+                val message = (e::class.qualifiedName ?: "Exception") + ": " + (e.message ?: "")
+                Log.w(TAG, message)
+                resultCode = 1
+                resultData = message
+            }
+        } else {
+            Log.w(TAG, "Unauthorized")
+            resultCode = 1
+            resultData = "Unauthorized"
+        }
+    }
+    companion object {
+        private const val TAG = "API"
+    }
+}
diff --git a/app/src/main/java/com/bintianqi/owndroid/AutomationActivity.kt b/app/src/main/java/com/bintianqi/owndroid/AutomationActivity.kt
deleted file mode 100644
index 2245e64..0000000
--- a/app/src/main/java/com/bintianqi/owndroid/AutomationActivity.kt
+++ /dev/null
@@ -1,27 +0,0 @@
-package com.bintianqi.owndroid
-
-import android.app.AlertDialog
-import android.content.Context
-import android.os.Bundle
-import androidx.activity.ComponentActivity
-import androidx.activity.compose.setContent
-import androidx.compose.ui.platform.LocalContext
-
-class AutomationActivity: ComponentActivity() {
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        val result = handleTask(applicationContext, this.intent)
-        val sharedPrefs = applicationContext.getSharedPreferences("data", Context.MODE_PRIVATE)
-        if(sharedPrefs.getBoolean("automation_debug", false)) {
-            setContent {
-                AlertDialog.Builder(LocalContext.current)
-                    .setMessage(result)
-                    .setOnDismissListener { finish() }
-                    .setPositiveButton(R.string.confirm) { _, _ -> finish() }
-                    .show()
-            }
-        } else {
-            finish()
-        }
-    }
-}
\ No newline at end of file
diff --git a/app/src/main/java/com/bintianqi/owndroid/AutomationReceiver.kt b/app/src/main/java/com/bintianqi/owndroid/AutomationReceiver.kt
deleted file mode 100644
index c151e09..0000000
--- a/app/src/main/java/com/bintianqi/owndroid/AutomationReceiver.kt
+++ /dev/null
@@ -1,44 +0,0 @@
-package com.bintianqi.owndroid
-
-import android.annotation.SuppressLint
-import android.content.BroadcastReceiver
-import android.content.Context
-import android.content.Intent
-import com.bintianqi.owndroid.dpm.getDPM
-import com.bintianqi.owndroid.dpm.getReceiver
-
-class AutomationReceiver: BroadcastReceiver() {
-    override fun onReceive(context: Context, intent: Intent) {
-        handleTask(context, intent)
-    }
-}
-
-@SuppressLint("NewApi")
-fun handleTask(context: Context, intent: Intent): String {
-    val sharedPrefs = context.getSharedPreferences("data", Context.MODE_PRIVATE)
-    val key = sharedPrefs.getString("automation_key", "")
-    if(key == null || key != intent.getStringExtra("key")) {
-        return "Wrong key"
-    }
-    val operation = intent.getStringExtra("operation")
-    val dpm = context.getDPM()
-    val receiver = context.getReceiver()
-    val app = intent.getStringExtra("app")
-    val restriction = intent.getStringExtra("restriction")
-    try {
-        when(operation) {
-            "suspend" -> dpm.setPackagesSuspended(receiver, arrayOf(app), true)
-            "unsuspend" -> dpm.setPackagesSuspended(receiver, arrayOf(app), false)
-            "hide" -> dpm.setApplicationHidden(receiver, app, true)
-            "unhide" -> dpm.setApplicationHidden(receiver, app, false)
-            "lock" -> dpm.lockNow()
-            "reboot" -> dpm.reboot(receiver)
-            "addUserRestriction" -> dpm.addUserRestriction(receiver, restriction)
-            "clearUserRestriction" -> dpm.clearUserRestriction(receiver, restriction)
-            else -> return "Operation not defined"
-        }
-    } catch(e: Exception) {
-        return e.message ?: "Failed to get error message"
-    }
-    return "No error, or error is unhandled"
-}
diff --git a/app/src/main/java/com/bintianqi/owndroid/MainActivity.kt b/app/src/main/java/com/bintianqi/owndroid/MainActivity.kt
index ff60f00..576fecb 100644
--- a/app/src/main/java/com/bintianqi/owndroid/MainActivity.kt
+++ b/app/src/main/java/com/bintianqi/owndroid/MainActivity.kt
@@ -299,7 +299,7 @@ fun Home(activity: FragmentActivity, vm: MyViewModel) {
         composable(route = "Options") { SettingsOptions(navCtrl) }
         composable(route = "Appearance") { Appearance(navCtrl, vm) }
         composable(route = "AuthSettings") { AuthSettings(navCtrl) }
-        composable(route = "Automation") { Automation(navCtrl) }
+        composable(route = "ApiSettings") { ApiSettings(navCtrl) }
         composable(route = "About") { About(navCtrl) }
 
         composable(route = "PackageSelector") { PackageSelector(navCtrl) }
diff --git a/app/src/main/java/com/bintianqi/owndroid/Receiver.kt b/app/src/main/java/com/bintianqi/owndroid/Receiver.kt
index ffeb552..5823f21 100644
--- a/app/src/main/java/com/bintianqi/owndroid/Receiver.kt
+++ b/app/src/main/java/com/bintianqi/owndroid/Receiver.kt
@@ -82,7 +82,7 @@ class Receiver : DeviceAdminReceiver() {
 
 val installAppDone = MutableStateFlow(false)
 
-class PackageInstallerReceiver:BroadcastReceiver(){
+class PackageInstallerReceiver: BroadcastReceiver() {
     override fun onReceive(context: Context, intent: Intent) {
         val toastText = when(intent.getIntExtra(EXTRA_STATUS, 999)){
             STATUS_PENDING_USER_ACTION -> R.string.status_pending_action
diff --git a/app/src/main/java/com/bintianqi/owndroid/Settings.kt b/app/src/main/java/com/bintianqi/owndroid/Settings.kt
index 19f1924..ce8af0b 100644
--- a/app/src/main/java/com/bintianqi/owndroid/Settings.kt
+++ b/app/src/main/java/com/bintianqi/owndroid/Settings.kt
@@ -32,9 +32,11 @@ import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.DpOffset
 import androidx.compose.ui.unit.dp
+import androidx.core.content.edit
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.navigation.NavHostController
 import com.bintianqi.owndroid.ui.FunctionItem
+import com.bintianqi.owndroid.ui.InfoCard
 import com.bintianqi.owndroid.ui.MyScaffold
 import com.bintianqi.owndroid.ui.SwitchItem
 import java.security.SecureRandom
@@ -45,7 +47,7 @@ fun Settings(navCtrl: NavHostController) {
         FunctionItem(R.string.options, "", R.drawable.tune_fill0) { navCtrl.navigate("Options") }
         FunctionItem(R.string.appearance, "", R.drawable.format_paint_fill0) { navCtrl.navigate("Appearance") }
         FunctionItem(R.string.security, "", R.drawable.lock_fill0) { navCtrl.navigate("AuthSettings") }
-        FunctionItem(R.string.automation_api, "", R.drawable.apps_fill0) { navCtrl.navigate("Automation") }
+        FunctionItem(R.string.api, "", R.drawable.apps_fill0) { navCtrl.navigate("ApiSettings") }
         FunctionItem(R.string.about, "", R.drawable.info_fill0) { navCtrl.navigate("About") }
     }
 }
@@ -154,43 +156,46 @@ fun AuthSettings(navCtrl: NavHostController) {
 }
 
 @Composable
-fun Automation(navCtrl: NavHostController) {
+fun ApiSettings(navCtrl: NavHostController) {
     val context = LocalContext.current
     val sharedPref = context.getSharedPreferences("data", Context.MODE_PRIVATE)
-    MyScaffold(R.string.automation_api, 8.dp, navCtrl) {
-        Spacer(Modifier.padding(vertical = 5.dp))
-        var key by remember { mutableStateOf("") }
-        OutlinedTextField(
-            value = key, onValueChange = { key = it }, label = { Text("Key")},
-            modifier = Modifier.fillMaxWidth(),
-            trailingIcon = {
-                IconButton(
-                    onClick = {
-                        val charset = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
-                        val sr = SecureRandom()
-                        key = (1..20).map { charset[sr.nextInt(charset.length)] }.joinToString("")
-                    }
-                ) {
-                    Icon(painter = painterResource(R.drawable.casino_fill0), contentDescription = "Random")
-                }
+    MyScaffold(R.string.api, 8.dp, navCtrl) {
+        var enabled by remember { mutableStateOf(sharedPref.getBoolean("enable_api", false)) }
+        LaunchedEffect(enabled) {
+            sharedPref.edit {
+                putBoolean("enable_api", enabled)
+                if(!enabled) remove("api_key")
             }
-        )
-        Button(
-            modifier = Modifier.fillMaxWidth(),
-            onClick = {
-                sharedPref.edit().putString("automation_key", key).apply()
-                Toast.makeText(context, R.string.success, Toast.LENGTH_SHORT).show()
-            },
-            enabled = key.length >= 20
-        ) {
-            Text(stringResource(R.string.apply))
         }
-        SwitchItem(
-            R.string.automation_debug, "", null,
-            { sharedPref.getBoolean("automation_debug", false) },
-            { sharedPref.edit().putBoolean("automation_debug", it).apply() },
-            padding = false
-        )
+        SwitchItem(R.string.enable, "", null, enabled, { enabled = it }, padding = false)
+        if(enabled) {
+            var key by remember { mutableStateOf("") }
+            OutlinedTextField(
+                value = key, onValueChange = { key = it }, label = { Text(stringResource(R.string.api_key)) },
+                modifier = Modifier.fillMaxWidth().padding(bottom = 4.dp), readOnly = true,
+                trailingIcon = {
+                    IconButton(
+                        onClick = {
+                            val charset = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
+                            val sr = SecureRandom()
+                            key = (1..20).map { charset[sr.nextInt(charset.length)] }.joinToString("")
+                        }
+                    ) {
+                        Icon(painter = painterResource(R.drawable.casino_fill0), contentDescription = "Random")
+                    }
+                }
+            )
+            Button(
+                modifier = Modifier.fillMaxWidth().padding(bottom = 10.dp),
+                onClick = {
+                    sharedPref.edit().putString("api_key", key).apply()
+                    Toast.makeText(context, R.string.success, Toast.LENGTH_SHORT).show()
+                }
+            ) {
+                Text(stringResource(R.string.apply))
+            }
+            if(sharedPref.contains("api_key")) InfoCard(R.string.api_key_exist)
+        }
     }
 }
 
diff --git a/app/src/main/java/com/bintianqi/owndroid/Utils.kt b/app/src/main/java/com/bintianqi/owndroid/Utils.kt
index bf3df3c..879df73 100644
--- a/app/src/main/java/com/bintianqi/owndroid/Utils.kt
+++ b/app/src/main/java/com/bintianqi/owndroid/Utils.kt
@@ -27,7 +27,6 @@ import java.text.SimpleDateFormat
 import java.time.Instant
 import java.time.ZoneId
 import java.time.format.DateTimeFormatter
-import java.time.format.FormatStyle
 import java.util.Date
 import java.util.Locale
 
@@ -143,7 +142,3 @@ fun parseTimestamp(timestamp: Long): String {
 
 val Long.humanReadableDate: String
     get() = SimpleDateFormat("yyyy/MM/dd", Locale.getDefault()).format(Date(this))
-
-val Long.humanReadableTime: String
-    get() = SimpleDateFormat("HH:mm:ss", Locale.getDefault()).format(Date(this))
-
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index c826eb1..4608d0d 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -555,8 +555,9 @@
     <string name="lock_in_background">Блокировать при переключении в фоновый режим</string>
     <string name="clear_storage">Очистить хранилище</string>
 
-    <string name="automation_api">API автоматизации</string>
-    <string name="automation_debug">Режим отладки</string>
+    <!--TODO-->
+    <string name="api_key">API key</string>
+    <string name="api_key_exist">The API key already exists, setting a new key will overwrite the current key.</string>
 
     <!--Разрешения Android-->
     <string name="permission_POST_NOTIFICATIONS">Отправлять уведомления</string>
diff --git a/app/src/main/res/values-tr/strings.xml b/app/src/main/res/values-tr/strings.xml
index f837cf3..80d2991 100644
--- a/app/src/main/res/values-tr/strings.xml
+++ b/app/src/main/res/values-tr/strings.xml
@@ -550,8 +550,9 @@
     <string name="lock_in_background">Arka plana geçince kilitle</string>
     <string name="clear_storage">Depolamayı temizle</string>
 
-    <string name="automation_api">Automation API</string> <!--TODO-->
-    <string name="automation_debug">Debug mode</string> <!--TODO-->
+    <!--TODO-->
+    <string name="api_key">API key</string>
+    <string name="api_key_exist">The API key already exists, setting a new key will overwrite the current key.</string>
 
     <!--AndroidPermission-->
     <string name="permission_POST_NOTIFICATIONS">Bildirim gönder</string>
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index 333c0e9..74350c2 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -540,8 +540,8 @@
     <string name="lock_in_background">处于后台时锁定</string>
     <string name="clear_storage">清除存储空间</string>
 
-    <string name="automation_api">自动化API</string>
-    <string name="automation_debug">调试模式</string>
+    <string name="api_key">API密钥</string>
+    <string name="api_key_exist">API密钥已存在，设置新的密钥将会覆盖当前密钥</string>
 
     <!--AndroidPermission-->
     <string name="permission_POST_NOTIFICATIONS">发送通知</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index c97bc09..f69941e 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -63,6 +63,7 @@
     <string name="alias">Alias</string>
     <string name="unknown_error">Unknown error</string>
     <string name="permission_denied">Permission denied</string>
+    <string name="api" translatable="false">API</string>
 
     <!--Permissions-->
     <string name="click_to_activate">Click to activate</string>
@@ -553,9 +554,9 @@
     <string name="authenticate">Authenticate</string>
     <string name="lock_in_background">Lock when switch to background</string>
     <string name="clear_storage">Clear storage</string>
-
-    <string name="automation_api">Automation API</string>
-    <string name="automation_debug">Debug mode</string>
+    
+    <string name="api_key">API key</string>
+    <string name="api_key_exist">The API key already exists, setting a new key will overwrite the current key.</string>
 
     <!--AndroidPermission-->
     <string name="permission_POST_NOTIFICATIONS">Post notifications</string>