diff --git a/controls-mongo/README.md b/controls-mongo/README.md
new file mode 100644
index 0000000..a627574
--- /dev/null
+++ b/controls-mongo/README.md
@@ -0,0 +1,26 @@
+# Description
+This module allows you to store [DeviceMessages](/controls-core/src/commonMain/kotlin/ru/mipt/npm/controls/api/DeviceMessage.kt)
+from certain [DeviceManager](/controls-core/src/commonMain/kotlin/ru/mipt/npm/controls/controllers/DeviceManager.kt)
+or [MagixMessages](magix/magix-api/src/commonMain/kotlin/ru/mipt/npm/magix/api/MagixMessage.kt)
+from [magix server](/magix/magix-server/src/main/kotlin/ru/mipt/npm/magix/server/server.kt)
+in [mongoDB](https://www.mongodb.com/).
+
+# Usage
+
+All usage examples can be found in [VirtualCarController](/demo/car/src/main/kotlin/ru/mipt/npm/controls/demo/car/VirtualCarController.kt).
+
+## Storage from Device Manager
+
+Just call storeMessagesInXodus. For more details, you can see comments in [source code](/controls-mongo/src/main/kotlin/ru/mipt/npm/controls/mongo/connections.kt)
+
+## Storage from Magix Server
+
+Just pass such lambda as parameter to startMagixServer:
+```kotlin
+{ flow ->
+    // some code
+    storeInMongo(flow)
+    // some code
+}
+```
+For more details, you can see comments in [source code](/controls-mongo/src/main/kotlin/ru/mipt/npm/controls/mongo/connections.kt)
diff --git a/controls-mongo/src/main/kotlin/ru/mipt/npm/controls/mongo/connections.kt b/controls-mongo/src/main/kotlin/ru/mipt/npm/controls/mongo/connections.kt
index a8a7800..e041171 100644
--- a/controls-mongo/src/main/kotlin/ru/mipt/npm/controls/mongo/connections.kt
+++ b/controls-mongo/src/main/kotlin/ru/mipt/npm/controls/mongo/connections.kt
@@ -39,6 +39,13 @@ public object DefaultMongoClientFactory : Factory<CoroutineClient> {
     } ?: KMongo.createClient(DEFAULT_MONGO_DATABASE_URL).coroutine
 }
 
+/**
+ * Begin to store DeviceMessages from this DeviceManager
+ * @param factory factory that will be used for creating persistent entity store instance. DefaultPersistentStoreFactory by default.
+ * DeviceManager's meta and context will be used for in invoke method.
+ * @param filterCondition allow you to specify messages which we want to store. Always true by default.
+ * @return Job which responsible for our storage
+ */
 @OptIn(InternalCoroutinesApi::class)
 public fun DeviceManager.connectMongo(
     factory: Factory<CoroutineClient>,
@@ -70,6 +77,12 @@ internal fun Flow<GenericMagixMessage>.storeInMongo(
     }
 }
 
+/** Begin to store MagixMessages from certain flow
+ * @param flow flow of messages which we will store
+ * @param meta Meta which may have some configuration parameters for our storage and will be used in invoke method of factory
+ * @param factory factory that will be used for creating persistent entity store instance. DefaultPersistentStoreFactory by default.
+ * @param flowFilter allow you to specify messages which we want to store. Always true by default.
+ */
 @OptIn(InternalCoroutinesApi::class)
 public fun Application.storeInMongo(
     flow: MutableSharedFlow<GenericMagixMessage>,
diff --git a/controls-xodus/README.md b/controls-xodus/README.md
new file mode 100644
index 0000000..dca332c
--- /dev/null
+++ b/controls-xodus/README.md
@@ -0,0 +1,26 @@
+# Description
+This module allows you to store [DeviceMessages](/controls-core/src/commonMain/kotlin/ru/mipt/npm/controls/api/DeviceMessage.kt)
+from certain [DeviceManager](/controls-core/src/commonMain/kotlin/ru/mipt/npm/controls/controllers/DeviceManager.kt) 
+or [MagixMessages](magix/magix-api/src/commonMain/kotlin/ru/mipt/npm/magix/api/MagixMessage.kt) 
+from [magix server](/magix/magix-server/src/main/kotlin/ru/mipt/npm/magix/server/server.kt)
+in [xodus database](https://github.com/JetBrains/xodus).
+
+# Usage
+
+All usage examples can be found in [VirtualCarController](/demo/car/src/main/kotlin/ru/mipt/npm/controls/demo/car/VirtualCarController.kt).
+
+## Storage from Device Manager
+
+Just call connectMongo. For more details, you can see comments in [source code](/controls-xodus/src/main/kotlin/ru/mipt/npm/controls/xodus/connections.kt)
+
+## Storage from Magix Server
+
+Just pass such lambda as parameter to startMagixServer:
+```kotlin
+{ flow ->
+    // some code
+    storeInXodus(flow)
+    // some code
+}
+```
+For more details, you can see comments in [source code](/controls-xodus/src/main/kotlin/ru/mipt/npm/controls/xodus/connections.kt)
diff --git a/controls-xodus/src/main/kotlin/ru/mipt/npm/controls/xodus/connections.kt b/controls-xodus/src/main/kotlin/ru/mipt/npm/controls/xodus/connections.kt
index 8c72785..3fe3ce6 100644
--- a/controls-xodus/src/main/kotlin/ru/mipt/npm/controls/xodus/connections.kt
+++ b/controls-xodus/src/main/kotlin/ru/mipt/npm/controls/xodus/connections.kt
@@ -36,6 +36,13 @@ internal val defaultPersistentStoreFactory = object : Factory<PersistentEntitySt
     override fun invoke(meta: Meta, context: Context): PersistentEntityStore = context.getPersistentEntityStore(meta)
 }
 
+/**
+ * Begin to store DeviceMessages from this DeviceManager
+ * @param factory factory that will be used for creating persistent entity store instance. DefaultPersistentStoreFactory by default.
+ * DeviceManager's meta and context will be used for in invoke method.
+ * @param filterCondition allow you to specify messages which we want to store. Always true by default.
+ * @return Job which responsible for our storage
+ */
 @OptIn(InternalCoroutinesApi::class)
 public fun DeviceManager.storeMessagesInXodus(
     factory: Factory<PersistentEntityStore> = defaultPersistentStoreFactory,
@@ -83,6 +90,12 @@ internal fun Flow<GenericMagixMessage>.storeInXodus(
     }
 }
 
+/** Begin to store MagixMessages from certain flow
+ * @param flow flow of messages which we will store
+ * @param meta Meta which may have some configuration parameters for our storage and will be used in invoke method of factory
+ * @param factory factory that will be used for creating persistent entity store instance. DefaultPersistentStoreFactory by default.
+ * @param flowFilter allow you to specify messages which we want to store. Always true by default.
+ */
 @OptIn(InternalCoroutinesApi::class)
 public fun Application.storeInXodus(
     flow: MutableSharedFlow<GenericMagixMessage>,