diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/AbstractPluginData.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/AbstractPluginData.kt
index 274bc3aa4..882e6bb02 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/AbstractPluginData.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/AbstractPluginData.kt
@@ -38,8 +38,6 @@ public abstract class AbstractPluginData : PluginData, PluginDataImpl() {
 
     /**
      * 所有 [valueNodes] 更新和保存序列化器. 仅供内部使用
-     *
-     * @suppress 注意, 这是实验性 API.
      */
     public final override val updaterSerializer: KSerializer<Unit>
         get() = super.updaterSerializer
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/PluginData.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/PluginData.kt
index d4004c82f..f76cc13a8 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/PluginData.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/PluginData.kt
@@ -176,9 +176,7 @@ public interface PluginData {
     ): T
 
     /**
-     * 所有 [valueNodes] 更新和保存序列化器. 仅供内部使用
-     *
-     * @suppress 注意, 这是实验性 API.
+     * 所有 [valueNodes] 更新和保存序列化器. 仅供内部使用。
      */
     public val updaterSerializer: KSerializer<Unit>
 
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/PluginDataStorage.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/PluginDataStorage.kt
index 2f1bb0ec1..0c9e0e55e 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/PluginDataStorage.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/PluginDataStorage.kt
@@ -30,6 +30,9 @@ import java.nio.file.Path
  *
  * [JvmPluginLoader] 实现一个 [PluginDataStorage], 用于管理所有 [JvmPlugin] 的 [PluginData] 实例.
  *
+ * ### 实现 [PluginDataStorage]
+ * 无特殊需求。实现两个成员函数即可。可参考内建 [MultiFilePluginDataStorageImpl]
+ *
  * @see PluginDataHolder
  * @see JvmPluginLoader.dataStorage
  */
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extension/Extension.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extension/Extension.kt
index 9a83ef339..e26d1398a 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extension/Extension.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extension/Extension.kt
@@ -13,10 +13,28 @@ import net.mamoe.mirai.console.extensions.PermissionServiceProvider
 import net.mamoe.mirai.console.extensions.PluginLoaderProvider
 import net.mamoe.mirai.console.extensions.SingletonExtensionSelector
 import net.mamoe.mirai.console.extensions.SingletonExtensionSelector.ExtensionPoint.selectSingleton
+import net.mamoe.mirai.console.plugin.jvm.JvmPlugin
+import net.mamoe.mirai.console.plugin.jvm.JvmPlugin.Companion.onLoad
 
 /**
  * 表示一个扩展.
  *
+ * ### 获取扩展
+ * Console 不允许插件获取自己或其他插件注册的扩展。
+ *
+ * ### 注册扩展
+ * 插件仅能在 [JvmPlugin.onLoad] 阶段注册扩展。
+ *
+ * ```kotlin
+ * object MyPlugin : KotlinPlugin( /* ... */ ) {
+ *     fun PluginComponentStorage.onLoad() {
+ *         contributePermissionService { /* ... */ }
+ *         contributePluginLoader { /* ... */ }
+ *         contribute(ExtensionPoint) { /* ... */ }
+ *     }
+ * }
+ * ```
+ *
  * @see ComponentStorage
  */
 public interface Extension
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extensions/PluginLoaderProvider.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extensions/PluginLoaderProvider.kt
index 5a8912130..510a1119b 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extensions/PluginLoaderProvider.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extensions/PluginLoaderProvider.kt
@@ -10,11 +10,14 @@
 package net.mamoe.mirai.console.extensions
 
 import net.mamoe.mirai.console.extension.AbstractExtensionPoint
+import net.mamoe.mirai.console.extension.Extension
 import net.mamoe.mirai.console.extension.InstanceExtension
 import net.mamoe.mirai.console.plugin.loader.PluginLoader
 
 /**
  * 提供扩展 [PluginLoader]
+ *
+ * @see Extension
  */
 public interface PluginLoaderProvider : InstanceExtension<PluginLoader<*, *>> {
     public companion object ExtensionPoint : AbstractExtensionPoint<PluginLoaderProvider>(PluginLoaderProvider::class)