diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/BuiltInCommands.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/BuiltInCommands.kt
index 764573ccf..1b24675be 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/BuiltInCommands.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/BuiltInCommands.kt
@@ -132,12 +132,12 @@ public object BuiltInCommands {
                 onFailure = { throwable ->
                     sendMessage(
                         "Login failed: ${throwable.localizedMessage ?: throwable.message ?: throwable.toString()}" +
-                                if (this is CommandSenderOnMessage<*>) {
-                                    CommandManagerImpl.launch(CoroutineName("stacktrace delayer from Login")) {
-                                        fromEvent.nextMessageOrNull(60.secondsToMillis) { it.message.contentEquals("stacktrace") }
-                                    }
-                                    "\n 1 分钟内发送 stacktrace 以获取堆栈信息"
-                                } else ""
+                            if (this is CommandSenderOnMessage<*>) {
+                                CommandManagerImpl.launch(CoroutineName("stacktrace delayer from Login")) {
+                                    fromEvent.nextMessageOrNull(60.secondsToMillis) { it.message.contentEquals("stacktrace") }
+                                }
+                                "\n 1 分钟内发送 stacktrace 以获取堆栈信息"
+                            } else ""
                     )
 
                     throw throwable
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/Command.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/Command.kt
index c89117904..b984d7166 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/Command.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/Command.kt
@@ -16,8 +16,8 @@ import net.mamoe.mirai.console.command.CommandManager.INSTANCE.executeCommand
 import net.mamoe.mirai.console.command.CommandManager.INSTANCE.register
 import net.mamoe.mirai.console.command.java.JCommand
 import net.mamoe.mirai.console.internal.command.createOrFindCommandPermission
-import net.mamoe.mirai.console.internal.command.isValidSubName
 import net.mamoe.mirai.console.permission.Permission
+import net.mamoe.mirai.console.permission.PermissionId
 import net.mamoe.mirai.message.data.MessageChain
 
 /**
@@ -33,13 +33,17 @@ import net.mamoe.mirai.message.data.MessageChain
  */
 public interface Command {
     /**
-     * 指令名. 需要至少有一个元素. 所有元素都不能带有空格
-     *
-     * 第一个元素会作为主指令名.
+     * 主指令名. 将会参与构成 [Permission.id].
      *
+     * 不允许包含 [空格][Char.isWhitespace], '.', ':'.
+     */
+    public val primaryName: String
+
+    /**
+     * 次要指令名
      * @see Command.primaryName 获取主指令名
      */
-    public val names: Array<out String>
+    public val secondaryNames: Array<out String>
 
     /**
      * 用法说明, 用于发送给用户. [usage] 一般包含 [description].
@@ -52,14 +56,18 @@ public interface Command {
     public val description: String
 
     /**
-     * 指令权限
+     * 此指令所分配的权限.
+     *
+     * ### 实现约束
+     * - [Permission.id] 应由 [CommandOwner.permissionId] 创建. 因此保证相同的 [PermissionId.namespace]
+     * - [PermissionId.name] 应为 [主指令名][primaryName]
      */
     public val permission: Permission
 
     /**
      * 为 `true` 时表示 [指令前缀][CommandManager.commandPrefix] 可选.
      *
-     * 会影响消息语境中的解析.
+     * 会影响聊天语境中的解析.
      */
     public val prefixOptional: Boolean
 
@@ -80,17 +88,34 @@ public interface Command {
     public suspend fun CommandSender.onCommand(args: MessageChain)
 
     public companion object {
+
         /**
-         * 主要指令名. 为 [Command.names] 的第一个元素.
+         * 获取所有指令名称 (包含 [primaryName] 和 [secondaryNames]).
+         *
+         * @return 数组大小至少为 1. 第一个元素总是 [primaryName]. 随后是保持原顺序的 [secondaryNames]
          */
         @JvmStatic
-        public val Command.primaryName: String
-            get() = names[0]
+        public val Command.allNames: Array<String>
+            get() = arrayOf(primaryName, *secondaryNames)
+
+        /**
+         * 检查指令名的合法性. 在非法时抛出 [IllegalArgumentException]
+         */
+        @Throws(IllegalArgumentException::class)
+        public fun checkCommandName(name: String) {
+            when {
+                name.isBlank() -> throw IllegalArgumentException("Command name should not be blank.")
+                name.any { it.isWhitespace() } -> throw IllegalArgumentException("Spaces is not yet allowed in command name.")
+                name.contains(':') -> throw IllegalArgumentException("':' is forbidden in command name.")
+                name.contains('.') -> throw IllegalArgumentException("'.' is forbidden in command name.")
+            }
+        }
     }
 }
 
 /**
  * 调用 [Command.onCommand]
+ * @see Command.onCommand
  */
 @JvmSynthetic
 public suspend inline fun Command.onCommand(sender: CommandSender, args: MessageChain): Unit =
@@ -105,19 +130,14 @@ public suspend inline fun Command.onCommand(sender: CommandSender, args: Message
  */
 public abstract class AbstractCommand
 @JvmOverloads constructor(
-    /** 指令拥有者. */
-    public override val owner: CommandOwner,
-    vararg names: String,
-    description: String = "<no description available>",
+    public final override val owner: CommandOwner,
+    public final override val primaryName: String,
+    public final override val secondaryNames: Array<out String>,
+    public override val description: String = "<no description available>",
     parentPermission: Permission = owner.parentPermission,
     /** 为 `true` 时表示 [指令前缀][CommandManager.commandPrefix] 可选 */
     public override val prefixOptional: Boolean = false,
 ) : Command {
-    public override val description: String = description.trimIndent()
-    public final override val names: Array<out String> =
-        names.map(String::trim).filterNot(String::isEmpty).map(String::toLowerCase).also { list ->
-            list.firstOrNull { !it.isValidSubName() }?.let { error("Invalid name: $it") }
-        }.toTypedArray()
-
+    public override val usage: String get() = description
     public override val permission: Permission by lazy { createOrFindCommandPermission(parentPermission) }
 }
\ No newline at end of file
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandExecutionException.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandExecutionException.kt
index a2cef3687..1998b71b0 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandExecutionException.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandExecutionException.kt
@@ -11,7 +11,6 @@
 
 package net.mamoe.mirai.console.command
 
-import net.mamoe.mirai.console.command.Command.Companion.primaryName
 import net.mamoe.mirai.console.command.CommandManager.INSTANCE.executeCommand
 
 /**
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandManager.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandManager.kt
index ba6c696a1..81e1d6132 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandManager.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandManager.kt
@@ -53,8 +53,8 @@ public interface CommandManager {
      *
      * @param override 是否覆盖重名指令.
      *
-     * 若原有指令 P, 其 [Command.names] 为 'a', 'b', 'c'.
-     * 新指令 Q, 其 [Command.names] 为 'b', 将会覆盖原指令 A 注册的 'b'.
+     * 若原有指令 P, 其 [Command.secondaryNames] 为 'a', 'b', 'c'.
+     * 新指令 Q, 其 [Command.secondaryNames] 为 'b', 将会覆盖原指令 A 注册的 'b'.
      *
      * 即注册完成后, 'a' 和 'c' 将会解析到指令 P, 而 'b' 会解析到指令 Q.
      *
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandOwner.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandOwner.kt
index 2515d05b8..f9c627edf 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandOwner.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandOwner.kt
@@ -36,5 +36,5 @@ public interface CommandOwner : PermissionIdNamespace {
 internal object ConsoleCommandOwner : CommandOwner {
     override val parentPermission: Permission get() = BuiltInCommands.parentPermission
 
-    override fun permissionId(name: String): PermissionId = PermissionId("console", "command.$name")
+    override fun permissionId(name: String): PermissionId = PermissionId("console", name)
 }
\ No newline at end of file
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandPermissionDeniedException.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandPermissionDeniedException.kt
index d0d976a30..f966ce96d 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandPermissionDeniedException.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandPermissionDeniedException.kt
@@ -9,7 +9,6 @@
 
 package net.mamoe.mirai.console.command
 
-import net.mamoe.mirai.console.command.Command.Companion.primaryName
 import net.mamoe.mirai.console.command.CommandManager.INSTANCE.executeCommand
 
 /**
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CompositeCommand.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CompositeCommand.kt
index 5cd7bdb2b..27ed74c57 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CompositeCommand.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CompositeCommand.kt
@@ -81,12 +81,13 @@ import kotlin.annotation.AnnotationTarget.FUNCTION
  */
 public abstract class CompositeCommand(
     owner: CommandOwner,
-    vararg names: String,
+    primaryName: String,
+    vararg secondaryNames: String,
     description: String = "no description available",
     parentPermission: Permission = owner.parentPermission,
     prefixOptional: Boolean = false,
     overrideContext: CommandArgumentContext = EmptyCommandArgumentContext,
-) : Command, AbstractReflectionCommand(owner, names, description, parentPermission, prefixOptional),
+) : Command, AbstractReflectionCommand(owner, primaryName, secondaryNames = secondaryNames, description, parentPermission, prefixOptional),
     CommandArgumentContextAware {
 
     /**
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/RawCommand.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/RawCommand.kt
index 621172e97..eeabedc10 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/RawCommand.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/RawCommand.kt
@@ -35,8 +35,10 @@ public abstract class RawCommand(
      * @see CommandOwner
      */
     public override val owner: CommandOwner,
-    /** 指令名. 需要至少有一个元素. 所有元素都不能带有空格 */
-    public override vararg val names: String,
+    /** 主指令名. */
+    public override val primaryName: String,
+    /** 次要指令名. */
+    public override vararg val secondaryNames: String,
     /** 用法说明, 用于发送给用户 */
     public override val usage: String = "<no usages given>",
     /** 指令描述, 用于显示在 [BuiltInCommands.Help] */
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/SimpleCommand.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/SimpleCommand.kt
index 55e5ef438..2a49ebcb0 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/SimpleCommand.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/SimpleCommand.kt
@@ -50,12 +50,13 @@ import net.mamoe.mirai.message.data.MessageChain
  */
 public abstract class SimpleCommand(
     owner: CommandOwner,
-    vararg names: String,
+    primaryName: String,
+    vararg secondaryNames: String,
     description: String = "no description available",
     parentPermission: Permission = owner.parentPermission,
     prefixOptional: Boolean = false,
     overrideContext: CommandArgumentContext = EmptyCommandArgumentContext,
-) : Command, AbstractReflectionCommand(owner, names, description, parentPermission, prefixOptional),
+) : Command, AbstractReflectionCommand(owner, primaryName, secondaryNames = secondaryNames, description, parentPermission, prefixOptional),
     CommandArgumentContextAware {
 
     /**
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/java/JCompositeCommand.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/java/JCompositeCommand.kt
index 6dacd29ac..fdb5aee47 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/java/JCompositeCommand.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/java/JCompositeCommand.kt
@@ -69,11 +69,12 @@ import net.mamoe.mirai.console.permission.Permission
 public abstract class JCompositeCommand
 @JvmOverloads constructor(
     owner: CommandOwner,
-    vararg names: String,
+    primaryName: String,
+    vararg secondaryNames: String,
     parentPermission: Permission = owner.parentPermission,
-) : CompositeCommand(owner, *names, parentPermission = parentPermission) {
-    /** 指令描述, 用于显示在 [BuiltInCommands.Help] */
-    public final override var description: String = "<no descriptions given>"
+) : CompositeCommand(owner, primaryName, secondaryNames = secondaryNames, parentPermission = parentPermission) {
+    /** 指令描述, 用于显示在 [BuiltInCommands.HelpCommand] */
+    public final override var description: String = "<no descriptions available>"
         protected set
 
     public final override var permission: Permission = super.permission
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/java/JRawCommand.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/java/JRawCommand.kt
index 07b03c641..3815a7332 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/java/JRawCommand.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/java/JRawCommand.kt
@@ -52,7 +52,7 @@ public abstract class JRawCommand
      */
     public override val owner: CommandOwner,
     /** 指令名. 需要至少有一个元素. 所有元素都不能带有空格 */
-    public override vararg val names: String,
+    public override vararg val secondaryNames: String,
     parentPermission: Permission = owner.parentPermission,
 ) : Command {
     /** 用法说明, 用于发送给用户 */
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/java/JSimpleCommand.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/java/JSimpleCommand.kt
index 37f7022b9..b136af3be 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/java/JSimpleCommand.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/java/JSimpleCommand.kt
@@ -41,9 +41,10 @@ import net.mamoe.mirai.console.permission.Permission
  */
 public abstract class JSimpleCommand(
     owner: CommandOwner,
-    vararg names: String,
+    primaryName: String,
+    vararg secondaryNames: String,
     basePermission: Permission,
-) : SimpleCommand(owner, *names, parentPermission = basePermission) {
+) : SimpleCommand(owner, primaryName, secondaryNames = secondaryNames, parentPermission = basePermission) {
     public override var description: String = super.description
         protected set
 
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/MiraiConsoleImplementationBridge.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/MiraiConsoleImplementationBridge.kt
index 09d354e12..0751b2432 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/MiraiConsoleImplementationBridge.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/MiraiConsoleImplementationBridge.kt
@@ -23,7 +23,6 @@ import net.mamoe.mirai.console.MiraiConsole
 import net.mamoe.mirai.console.MiraiConsoleFrontEndDescription
 import net.mamoe.mirai.console.MiraiConsoleImplementation
 import net.mamoe.mirai.console.command.BuiltInCommands
-import net.mamoe.mirai.console.command.Command.Companion.primaryName
 import net.mamoe.mirai.console.command.CommandManager
 import net.mamoe.mirai.console.command.ConsoleCommandSender
 import net.mamoe.mirai.console.data.PluginDataStorage
@@ -191,6 +190,10 @@ internal object MiraiConsoleImplementationBridge : CoroutineScope, MiraiConsoleI
 
             PluginManagerImpl.enableAllLoadedPlugins()
 
+            for (registeredCommand in CommandManager.allRegisteredCommands) {
+                registeredCommand.permission // init
+            }
+
             mainLogger.info { "${PluginManagerImpl.plugins.size} plugin(s) enabled." }
         }
 
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/CommandManagerImpl.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/CommandManagerImpl.kt
index 6178ef36f..2fb30f9b3 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/CommandManagerImpl.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/CommandManagerImpl.kt
@@ -14,7 +14,6 @@ import kotlinx.coroutines.CoroutineExceptionHandler
 import kotlinx.coroutines.CoroutineScope
 import net.mamoe.mirai.console.MiraiConsole
 import net.mamoe.mirai.console.command.*
-import net.mamoe.mirai.console.command.Command.Companion.primaryName
 import net.mamoe.mirai.console.command.CommandSender.Companion.toCommandSender
 import net.mamoe.mirai.event.Listener
 import net.mamoe.mirai.event.subscribeAlways
@@ -101,7 +100,7 @@ internal object CommandManagerImpl : CommandManager, CoroutineScope by Coroutine
     override fun Command.register(override: Boolean): Boolean {
         if (this is CompositeCommand) this.subCommands // init lazy
         this.permission // init lazy
-        this.names // init lazy
+        this.secondaryNames // init lazy
         this.description // init lazy
         this.usage // init lazy
 
@@ -111,13 +110,13 @@ internal object CommandManagerImpl : CommandManager, CoroutineScope by Coroutine
             }
             registeredCommands.add(this@register)
             if (this.prefixOptional) {
-                for (name in this.names) {
+                for (name in this.secondaryNames) {
                     val lowerCaseName = name.toLowerCase()
                     optionalPrefixCommandMap[lowerCaseName] = this
                     requiredPrefixCommandMap[lowerCaseName] = this
                 }
             } else {
-                for (name in this.names) {
+                for (name in this.secondaryNames) {
                     val lowerCaseName = name.toLowerCase()
                     optionalPrefixCommandMap.remove(lowerCaseName) // ensure resolution consistency
                     requiredPrefixCommandMap[lowerCaseName] = this
@@ -128,15 +127,15 @@ internal object CommandManagerImpl : CommandManager, CoroutineScope by Coroutine
     }
 
     override fun Command.findDuplicate(): Command? =
-        registeredCommands.firstOrNull { it.names intersectsIgnoringCase this.names }
+        registeredCommands.firstOrNull { it.secondaryNames intersectsIgnoringCase this.secondaryNames }
 
     override fun Command.unregister(): Boolean = modifyLock.withLock {
         if (this.prefixOptional) {
-            this.names.forEach {
+            this.secondaryNames.forEach {
                 optionalPrefixCommandMap.remove(it)
             }
         }
-        this.names.forEach {
+        this.secondaryNames.forEach {
             requiredPrefixCommandMap.remove(it)
         }
         registeredCommands.remove(this)
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/CompositeCommandInternal.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/CompositeCommandInternal.kt
index 0a3948277..f922229d4 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/CompositeCommandInternal.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/CompositeCommandInternal.kt
@@ -12,7 +12,6 @@
 package net.mamoe.mirai.console.internal.command
 
 import net.mamoe.mirai.console.command.*
-import net.mamoe.mirai.console.command.Command.Companion.primaryName
 import net.mamoe.mirai.console.command.description.CommandArgumentContext
 import net.mamoe.mirai.console.command.description.CommandArgumentContextAware
 import net.mamoe.mirai.console.internal.data.kClassQualifiedNameOrTip
@@ -42,19 +41,21 @@ internal object SimpleCommandSubCommandAnnotationResolver :
         function.hasAnnotation<SimpleCommand.Handler>()
 
     override fun getSubCommandNames(baseCommand: AbstractReflectionCommand, function: KFunction<*>): Array<out String> =
-        baseCommand.names
+        baseCommand.secondaryNames
 }
 
 internal abstract class AbstractReflectionCommand
 @JvmOverloads constructor(
     owner: CommandOwner,
-    names: Array<out String>,
+    primaryName: String,
+    secondaryNames: Array<out String>,
     description: String = "<no description available>",
     parentPermission: Permission = owner.parentPermission,
     prefixOptional: Boolean = false,
 ) : Command, AbstractCommand(
     owner,
-    names = names,
+    primaryName = primaryName,
+    secondaryNames = secondaryNames,
     description = description,
     parentPermission = parentPermission,
     prefixOptional = prefixOptional
@@ -251,7 +252,7 @@ internal fun AbstractReflectionCommand.SubCommandDescriptor.createUsage(baseComm
 
 internal fun AbstractReflectionCommand.createSubCommand(
     function: KFunction<*>,
-    context: CommandArgumentContext
+    context: CommandArgumentContext,
 ): AbstractReflectionCommand.SubCommandDescriptor {
     val notStatic = !function.hasAnnotation<JvmStatic>()
     //val overridePermission = null//function.findAnnotation<CompositeCommand.PermissionId>()//optional
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/internal.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/internal.kt
index b57516237..ac83357ac 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/internal.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/internal.kt
@@ -10,7 +10,6 @@
 package net.mamoe.mirai.console.internal.command
 
 import net.mamoe.mirai.console.command.Command
-import net.mamoe.mirai.console.command.Command.Companion.primaryName
 import net.mamoe.mirai.console.permission.Permission
 import net.mamoe.mirai.console.permission.PermissionService
 import net.mamoe.mirai.contact.Group
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/permission/Permission.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/permission/Permission.kt
index 289b4b214..b7c7cd80f 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/permission/Permission.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/permission/Permission.kt
@@ -13,9 +13,9 @@ import net.mamoe.mirai.console.command.BuiltInCommands
 import net.mamoe.mirai.console.command.Command
 
 /**
- * 一个权限.
+ * 一个抽象的「权限」. 由 [PermissionService] 实现不同, [Permission] 可能会有多种实例. 但一个权限总是拥有确定的 [id].
  *
- * 由 [PermissionService] 实现不同, [Permission] 可能会有多种实例. 但一个权限总是拥有确定的 [id].
+ * 在匹配权限时, 应使用唯一的 [id] 作为依据. 而不应该使用 [Permission] 实例. 同时, [Permission] 也不适合存储.
  *
  * **注意**: 请不要手动实现这个接口. 总是从 [PermissionService.register] 获得实例.
  *
@@ -32,6 +32,7 @@ import net.mamoe.mirai.console.command.Command
  * #### 手动申请权限
  * [PermissionService.register]
  */
+@PermissionImplementation
 public interface Permission {
     /**
      * 唯一识别 ID. 所有权限的 [id] 都互不相同.
@@ -49,6 +50,8 @@ public interface Permission {
     /**
      * 父权限.
      *
+     * 在检查权限时, 若一个 [Permittee] 拥有父
+     *
      * [RootPermission] 的 parent 为自身
      */
     public val parent: Permission
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/permission/PermissionIdNamespace.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/permission/PermissionIdNamespace.kt
index 6c8cb4b4c..3b4c16777 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/permission/PermissionIdNamespace.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/permission/PermissionIdNamespace.kt
@@ -9,12 +9,16 @@
 
 package net.mamoe.mirai.console.permission
 
+import net.mamoe.mirai.console.command.Command
+
 /**
  * [PermissionId] 的命名空间. 用于提供 [PermissionId.namespace].
  */
 public interface PermissionIdNamespace {
     /**
-     * 创建一个此命名空间下的 [PermitteeId]
+     * 创建一个此命名空间下的 [PermitteeId].
+     *
+     * 在指令初始化时, 会申请对应权限. 此时 [name] 为 "command.$primaryName` 其中 [primaryName][Command.primaryName].
      */
     public fun permissionId(name: String): PermissionId
 }
\ No newline at end of file
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/permission/PermissionImplementation.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/permission/PermissionImplementation.kt
index c215e224d..2e79f262e 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/permission/PermissionImplementation.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/permission/PermissionImplementation.kt
@@ -12,10 +12,12 @@ package net.mamoe.mirai.console.permission
 import kotlin.annotation.AnnotationTarget.*
 
 /**
- * 表示一个应该由权限插件实现的类.
+ * 表示一个应该由专有的权限插件 (提供 [PermissionService] 的插件) 实现的类.
  *
- * 这样的类不能被用户手动实现或者继承, 也不能使用属性委托或者类委托, 或者其他任意改变实现类的手段.
- * 用户仅应该使用从 [PermissionService] 或其他途径获取这些对象, 而不能自行实现它们.
+ *
+ * 这样的类不能被用户手动实现或者继承, 也不能使用属性委托或者类委托, 或者其他任意直接或间接实现他们的手段 (否则会导致 [PermissionService] 处理异常).
+ *
+ * 普通插件仅应该使用从 [PermissionService] 或其他途径获取这些对象.
  */
 @Retention(AnnotationRetention.BINARY)
 @Target(CLASS, TYPEALIAS, FUNCTION, PROPERTY, FIELD, CONSTRUCTOR)
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/permission/PermissionService.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/permission/PermissionService.kt
index ed014fa99..522fc88d1 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/permission/PermissionService.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/permission/PermissionService.kt
@@ -77,6 +77,8 @@ public interface PermissionService<P : Permission> {
      * 申请并注册一个权限 [Permission].
      *
      * @throws PermissionRegistryConflictException 当已存在一个 [PermissionId] 时抛出.
+     *
+     * @return 申请到的 [Permission] 实例
      */
     @Throws(PermissionRegistryConflictException::class)
     public fun register(
@@ -90,16 +92,17 @@ public interface PermissionService<P : Permission> {
     /**
      * 授予 [permitteeId] 以 [permission] 权限
      *
-     * Console 内建的权限服务支持授予操作. 但插件扩展的权限服务可能不支持.
+     * Console 内建的权限服务支持此操作. 但插件扩展的权限服务可能不支持.
      *
      * @throws UnsupportedOperationException 当插件扩展的 [PermissionService] 不支持这样的操作时抛出.
      */
+    @Throws(UnsupportedOperationException::class)
     public fun permit(permitteeId: PermitteeId, permission: P)
 
     /**
      * 撤销 [permitteeId] 的 [permission] 授权
      *
-     * Console 内建的权限服务支持授予操作. 但插件扩展的权限服务可能不支持.
+     * Console 内建的权限服务支持此操作. 但插件扩展的权限服务可能不支持.
      *
      * @param recursive `true` 时递归撤销所有子权限.
      * 例如, 若 [permission] 为 "*:*",
@@ -108,6 +111,7 @@ public interface PermissionService<P : Permission> {
      *
      * @throws UnsupportedOperationException 当插件扩展的 [PermissionService] 不支持这样的操作时抛出.
      */
+    @Throws(UnsupportedOperationException::class)
     public fun cancel(permitteeId: PermitteeId, permission: P, recursive: Boolean)
 
     public companion object {
@@ -118,6 +122,10 @@ public interface PermissionService<P : Permission> {
         public val INSTANCE: PermissionService<out Permission>
             get() = instanceField ?: error("PermissionService is not yet initialized therefore cannot be used.")
 
+        /**
+         * 获取一个权限, 失败时抛出 [NoSuchElementException]
+         */
+        @Throws(NoSuchElementException::class)
         public fun <P : Permission> PermissionService<P>.getOrFail(id: PermissionId): P =
             get(id) ?: throw NoSuchElementException("Permission not found: $id")
 
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/jvm/AbstractJvmPlugin.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/jvm/AbstractJvmPlugin.kt
index 95dcfb1d0..9ed8caa29 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/jvm/AbstractJvmPlugin.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/jvm/AbstractJvmPlugin.kt
@@ -37,7 +37,7 @@ public abstract class AbstractJvmPlugin @JvmOverloads constructor(
 
     public final override val loader: JvmPluginLoader get() = super<JvmPluginInternal>.loader
 
-    public final override fun permissionId(name: String): PermissionId = PermissionId(description.id, "command.$name")
+    public final override fun permissionId(name: String): PermissionId = PermissionId(description.id, name)
 
     /**
      * 重载 [PluginData]
diff --git a/frontend/mirai-console-terminal/src/main/kotlin/net/mamoe/mirai/console/terminal/ConsoleThread.kt b/frontend/mirai-console-terminal/src/main/kotlin/net/mamoe/mirai/console/terminal/ConsoleThread.kt
index a6cad4cc6..a21b63c1e 100644
--- a/frontend/mirai-console-terminal/src/main/kotlin/net/mamoe/mirai/console/terminal/ConsoleThread.kt
+++ b/frontend/mirai-console-terminal/src/main/kotlin/net/mamoe/mirai/console/terminal/ConsoleThread.kt
@@ -16,7 +16,6 @@ import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import net.mamoe.mirai.console.MiraiConsole
 import net.mamoe.mirai.console.command.BuiltInCommands
-import net.mamoe.mirai.console.command.Command.Companion.primaryName
 import net.mamoe.mirai.console.command.CommandExecuteStatus
 import net.mamoe.mirai.console.command.CommandManager
 import net.mamoe.mirai.console.command.CommandManager.INSTANCE.executeCommand