diff --git a/controls-magix-client/README.md b/controls-magix/README.md
similarity index 100%
rename from controls-magix-client/README.md
rename to controls-magix/README.md
diff --git a/controls-magix-client/build.gradle.kts b/controls-magix/build.gradle.kts
similarity index 86%
rename from controls-magix-client/build.gradle.kts
rename to controls-magix/build.gradle.kts
index cbdefcc..76c7956 100644
--- a/controls-magix-client/build.gradle.kts
+++ b/controls-magix/build.gradle.kts
@@ -4,7 +4,7 @@ plugins {
 }
 
 description = """
-    Magix service for binding controls devices (both as RPC client and server
+    Magix service for binding controls devices (both as RPC client and server)
 """.trimIndent()
 
 kscience {
@@ -16,7 +16,7 @@ kscience {
     dependencies {
         api(projects.magix.magixApi)
         api(projects.controlsCore)
-        api("com.benasher44:uuid:0.7.0")
+        api("com.benasher44:uuid:0.8.0")
     }
 }
 
diff --git a/controls-magix-client/src/commonMain/kotlin/space/kscience/controls/client/DeviceClient.kt b/controls-magix/src/commonMain/kotlin/space/kscience/controls/client/DeviceClient.kt
similarity index 86%
rename from controls-magix-client/src/commonMain/kotlin/space/kscience/controls/client/DeviceClient.kt
rename to controls-magix/src/commonMain/kotlin/space/kscience/controls/client/DeviceClient.kt
index ce5dd75..64e8a9e 100644
--- a/controls-magix-client/src/commonMain/kotlin/space/kscience/controls/client/DeviceClient.kt
+++ b/controls-magix/src/commonMain/kotlin/space/kscience/controls/client/DeviceClient.kt
@@ -19,7 +19,7 @@ import kotlin.coroutines.CoroutineContext
 private fun stringUID() = uuid4().leastSignificantBits.toString(16)
 
 /**
- * An implementation of device via RPC
+ * A remote accessible device that relies on connection via Magix
  */
 public class DeviceClient(
     override val context: Context,
@@ -103,11 +103,15 @@ public class DeviceClient(
 }
 
 /**
- * Connect to a remote device via this client.
+ * Connect to a remote device via this endpoint.
+ *
+ * @param context a [Context] to run device in
+ * @param endpointName the name of endpoint in Magix to connect to
+ * @param deviceName the name of device within endpoint
  */
-public fun MagixEndpoint.remoteDevice(context: Context, magixTarget: String, deviceName: Name): DeviceClient {
-    val subscription = subscribe(DeviceManager.magixFormat, originFilter = listOf(magixTarget)).map { it.second }
+public fun MagixEndpoint.remoteDevice(context: Context, endpointName: String, deviceName: Name): DeviceClient {
+    val subscription = subscribe(DeviceManager.magixFormat, originFilter = listOf(endpointName)).map { it.second }
     return DeviceClient(context, deviceName, subscription) {
-        send(DeviceManager.magixFormat, it, magixTarget, id = stringUID())
+        send(DeviceManager.magixFormat, it, endpointName, id = stringUID())
     }
 }
\ No newline at end of file
diff --git a/controls-magix-client/src/commonMain/kotlin/space/kscience/controls/client/controlsMagix.kt b/controls-magix/src/commonMain/kotlin/space/kscience/controls/client/controlsMagix.kt
similarity index 95%
rename from controls-magix-client/src/commonMain/kotlin/space/kscience/controls/client/controlsMagix.kt
rename to controls-magix/src/commonMain/kotlin/space/kscience/controls/client/controlsMagix.kt
index e986fc5..ed69bff 100644
--- a/controls-magix-client/src/commonMain/kotlin/space/kscience/controls/client/controlsMagix.kt
+++ b/controls-magix/src/commonMain/kotlin/space/kscience/controls/client/controlsMagix.kt
@@ -33,7 +33,7 @@ internal fun generateId(request: MagixMessage): String = if (request.id != null)
 /**
  * Communicate with server in [Magix format](https://github.com/waltz-controls/rfc/tree/master/1)
  */
-public fun DeviceManager.connectToMagix(
+public fun DeviceManager.launchMagixService(
     endpoint: MagixEndpoint,
     endpointID: String = controlsMagixFormat.defaultFormat,
 ): Job = context.launch {
@@ -42,9 +42,9 @@ public fun DeviceManager.connectToMagix(
         if (responsePayload != null) {
             endpoint.send(
                 format = controlsMagixFormat,
-                target = request.sourceEndpoint,
-                origin = endpointID,
                 payload = responsePayload,
+                source = endpointID,
+                target = request.sourceEndpoint,
                 id = generateId(request),
                 parentId = request.id
             )
@@ -56,8 +56,8 @@ public fun DeviceManager.connectToMagix(
     hubMessageFlow(this).onEach { payload ->
         endpoint.send(
             format = controlsMagixFormat,
-            origin = endpointID,
             payload = payload,
+            source = endpointID,
             id = "df[${payload.hashCode()}]"
         )
     }.catch { error ->
diff --git a/controls-magix-client/src/commonMain/kotlin/space/kscience/controls/client/doocsMagix.kt b/controls-magix/src/commonMain/kotlin/space/kscience/controls/client/doocsMagix.kt
similarity index 100%
rename from controls-magix-client/src/commonMain/kotlin/space/kscience/controls/client/doocsMagix.kt
rename to controls-magix/src/commonMain/kotlin/space/kscience/controls/client/doocsMagix.kt
diff --git a/controls-magix-client/src/commonMain/kotlin/space/kscience/controls/client/tangoMagix.kt b/controls-magix/src/commonMain/kotlin/space/kscience/controls/client/tangoMagix.kt
similarity index 95%
rename from controls-magix-client/src/commonMain/kotlin/space/kscience/controls/client/tangoMagix.kt
rename to controls-magix/src/commonMain/kotlin/space/kscience/controls/client/tangoMagix.kt
index e7ee969..d0bdda4 100644
--- a/controls-magix-client/src/commonMain/kotlin/space/kscience/controls/client/tangoMagix.kt
+++ b/controls-magix/src/commonMain/kotlin/space/kscience/controls/client/tangoMagix.kt
@@ -77,10 +77,10 @@ public fun DeviceManager.launchTangoMagix(
     suspend fun respond(request: MagixMessage, payload: TangoPayload, payloadBuilder: (TangoPayload) -> TangoPayload) {
         endpoint.send(
             tangoMagixFormat,
+            payload = payloadBuilder(payload),
+            source = endpointID,
             id = generateId(request),
-            parentId = request.id,
-            origin = endpointID,
-            payload = payloadBuilder(payload)
+            parentId = request.id
         )
     }
 
@@ -127,10 +127,10 @@ public fun DeviceManager.launchTangoMagix(
                 logger.error(ex) { "Error while responding to message" }
                 endpoint.send(
                     tangoMagixFormat,
+                    payload = payload.copy(quality = TangoQuality.WARNING),
+                    source = endpointID,
                     id = generateId(request),
-                    parentId = request.id,
-                    origin = endpointID,
-                    payload = payload.copy(quality = TangoQuality.WARNING)
+                    parentId = request.id
                 )
             }
         }.launchIn(this)
diff --git a/controls-storage/build.gradle.kts b/controls-storage/build.gradle.kts
index 6bf1aa2..a8c6c29 100644
--- a/controls-storage/build.gradle.kts
+++ b/controls-storage/build.gradle.kts
@@ -13,7 +13,7 @@ kscience{
     }
     dependencies(jvmMain){
         api(projects.magix.magixApi)
-        api(projects.controlsMagixClient)
+        api(projects.controlsMagix)
         api(projects.magix.magixServer)
     }
 }
diff --git a/demo/all-things/build.gradle.kts b/demo/all-things/build.gradle.kts
index 1ea3c05..05d7395 100644
--- a/demo/all-things/build.gradle.kts
+++ b/demo/all-things/build.gradle.kts
@@ -17,7 +17,7 @@ dependencies {
     implementation(projects.controlsCore)
     //implementation(projects.controlsServer)
     implementation(projects.magix.magixServer)
-    implementation(projects.controlsMagixClient)
+    implementation(projects.controlsMagix)
     implementation(projects.magix.magixRsocket)
     implementation(projects.magix.magixZmq)
     implementation(projects.controlsOpcua)
diff --git a/demo/all-things/src/main/kotlin/space/kscience/controls/demo/DemoControllerView.kt b/demo/all-things/src/main/kotlin/space/kscience/controls/demo/DemoControllerView.kt
index edb199e..94815fa 100644
--- a/demo/all-things/src/main/kotlin/space/kscience/controls/demo/DemoControllerView.kt
+++ b/demo/all-things/src/main/kotlin/space/kscience/controls/demo/DemoControllerView.kt
@@ -8,7 +8,7 @@ import javafx.stage.Stage
 import kotlinx.coroutines.launch
 import org.eclipse.milo.opcua.sdk.server.OpcUaServer
 import org.eclipse.milo.opcua.stack.core.types.builtin.LocalizedText
-import space.kscience.controls.client.connectToMagix
+import space.kscience.controls.client.launchMagixService
 import space.kscience.controls.demo.DemoDevice.Companion.cosScale
 import space.kscience.controls.demo.DemoDevice.Companion.sinScale
 import space.kscience.controls.demo.DemoDevice.Companion.timeScale
@@ -59,7 +59,7 @@ class DemoController : Controller(), ContextAware {
             )
             //Launch a device client and connect it to the server
             val deviceEndpoint = MagixEndpoint.rSocketWithTcp("localhost")
-            deviceManager.connectToMagix(deviceEndpoint)
+            deviceManager.launchMagixService(deviceEndpoint)
             //connect visualization to a magix endpoint
             val visualEndpoint = MagixEndpoint.rSocketWithWebSockets("localhost")
             visualizer = startDemoDeviceServer(visualEndpoint)
diff --git a/demo/car/build.gradle.kts b/demo/car/build.gradle.kts
index 3c943dd..5d53f11 100644
--- a/demo/car/build.gradle.kts
+++ b/demo/car/build.gradle.kts
@@ -19,7 +19,7 @@ dependencies {
     implementation(projects.magix.magixServer)
     implementation(projects.magix.magixRsocket)
     implementation(projects.magix.magixZmq)
-    implementation(projects.controlsMagixClient)
+    implementation(projects.controlsMagix)
     implementation(projects.controlsStorage.controlsXodus)
     implementation(projects.magix.magixStorage.magixStorageXodus)
 //    implementation(projects.controlsMongo)
diff --git a/demo/car/src/main/kotlin/space/kscience/controls/demo/car/VirtualCarController.kt b/demo/car/src/main/kotlin/space/kscience/controls/demo/car/VirtualCarController.kt
index f68c585..7a170ac 100644
--- a/demo/car/src/main/kotlin/space/kscience/controls/demo/car/VirtualCarController.kt
+++ b/demo/car/src/main/kotlin/space/kscience/controls/demo/car/VirtualCarController.kt
@@ -8,7 +8,7 @@ import javafx.scene.layout.Priority
 import javafx.stage.Stage
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
-import space.kscience.controls.client.connectToMagix
+import space.kscience.controls.client.launchMagixService
 import space.kscience.controls.demo.car.IVirtualCar.Companion.acceleration
 import space.kscience.controls.manager.DeviceManager
 import space.kscience.controls.manager.install
@@ -63,7 +63,7 @@ class VirtualCarController : Controller(), ContextAware {
             //mongoStorageJob = deviceManager.storeMessages(DefaultAsynchronousMongoClientFactory)
             //Launch device client and connect it to the server
             val deviceEndpoint = MagixEndpoint.rSocketWithTcp("localhost")
-            deviceManager.connectToMagix(deviceEndpoint)
+            deviceManager.launchMagixService(deviceEndpoint)
         }
     }
 
diff --git a/demo/many-devices/build.gradle.kts b/demo/many-devices/build.gradle.kts
index 277d47b..7248e42 100644
--- a/demo/many-devices/build.gradle.kts
+++ b/demo/many-devices/build.gradle.kts
@@ -14,7 +14,7 @@ val rsocketVersion: String by rootProject.extra
 
 dependencies {
     implementation(projects.magix.magixServer)
-    implementation(projects.controlsMagixClient)
+    implementation(projects.controlsMagix)
     implementation(projects.magix.magixRsocket)
     implementation(projects.magix.magixZmq)
 
diff --git a/demo/many-devices/src/main/kotlin/space/kscience/controls/demo/MassDevice.kt b/demo/many-devices/src/main/kotlin/space/kscience/controls/demo/MassDevice.kt
index 56b66b9..94ef9db 100644
--- a/demo/many-devices/src/main/kotlin/space/kscience/controls/demo/MassDevice.kt
+++ b/demo/many-devices/src/main/kotlin/space/kscience/controls/demo/MassDevice.kt
@@ -6,7 +6,7 @@ import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import kotlinx.datetime.Clock
-import space.kscience.controls.client.connectToMagix
+import space.kscience.controls.client.launchMagixService
 import space.kscience.controls.client.magixFormat
 import space.kscience.controls.manager.DeviceManager
 import space.kscience.controls.manager.install
@@ -78,7 +78,7 @@ suspend fun main() {
 
             val endpointId = "device$it"
             val deviceEndpoint = MagixEndpoint.rSocketWithTcp("localhost")
-            deviceManager.connectToMagix(deviceEndpoint, endpointId)
+            deviceManager.launchMagixService(deviceEndpoint, endpointId)
         }
     }
 
diff --git a/demo/motors/build.gradle.kts b/demo/motors/build.gradle.kts
index 0acea4a..8626c72 100644
--- a/demo/motors/build.gradle.kts
+++ b/demo/motors/build.gradle.kts
@@ -24,6 +24,6 @@ val dataforgeVersion: String by extra
 
 dependencies {
     implementation(project(":controls-ports-ktor"))
-    implementation(project(":controls-magix-client"))
+    implementation(projects.controlsMagix)
     implementation("no.tornado:tornadofx:1.7.20")
 }
diff --git a/magix/magix-api/src/commonMain/kotlin/space/kscience/magix/api/MagixFormat.kt b/magix/magix-api/src/commonMain/kotlin/space/kscience/magix/api/MagixFormat.kt
index 39ef071..115fcff 100644
--- a/magix/magix-api/src/commonMain/kotlin/space/kscience/magix/api/MagixFormat.kt
+++ b/magix/magix-api/src/commonMain/kotlin/space/kscience/magix/api/MagixFormat.kt
@@ -41,16 +41,16 @@ public fun <T> MagixEndpoint.subscribe(
 public suspend fun <T> MagixEndpoint.send(
     format: MagixFormat<T>,
     payload: T,
+    source: String,
     target: String? = null,
     id: String? = null,
     parentId: String? = null,
     user: JsonElement? = null,
-    origin: String = format.defaultFormat,
 ) {
     val message = MagixMessage(
         format = format.defaultFormat,
         payload = magixJson.encodeToJsonElement(format.serializer, payload),
-        sourceEndpoint = origin,
+        sourceEndpoint = source,
         targetEndpoint = target,
         id = id,
         parentId = parentId,
diff --git a/magix/magix-api/src/commonMain/kotlin/space/kscience/magix/services/MagixRegistry.kt b/magix/magix-api/src/commonMain/kotlin/space/kscience/magix/services/MagixRegistry.kt
index f6af81c..3272131 100644
--- a/magix/magix-api/src/commonMain/kotlin/space/kscience/magix/services/MagixRegistry.kt
+++ b/magix/magix-api/src/commonMain/kotlin/space/kscience/magix/services/MagixRegistry.kt
@@ -20,13 +20,17 @@ import space.kscience.magix.api.subscribe
  */
 public interface MagixRegistry {
     /**
-     * Request a property with name [propertyName] and user authentication data [user].
+     * Request a property with name [propertyName].
      *
      * Return a property value in its generic form or null if it is not present.
      *
      * Throw exception access is denied, or request failed.
      */
-    public suspend fun request(propertyName: String, user: JsonElement? = null): JsonElement?
+    public suspend fun get(propertyName: String): JsonElement?
+}
+
+public interface MutableMagixRegistry {
+    public suspend fun set(propertyName: String, value: JsonElement?, user: JsonElement?)
 }
 
 @Serializable
@@ -48,7 +52,7 @@ public class MagixRegistryRequestMessage(
 @SerialName("registry.value")
 public class MagixRegistryValueMessage(
     override val propertyName: String,
-    public val value: JsonElement,
+    public val value: JsonElement?,
 ) : MagixRegistryMessage()
 
 @Serializable
@@ -59,29 +63,58 @@ public class MagixRegistryErrorMessage(
     public val errorMessage: String? = null,
 ) : MagixRegistryMessage()
 
+@Serializable
+@SerialName("registry.modify")
+public class MagixRegistryModifyMessage(
+    override val propertyName: String,
+    public val value: JsonElement,
+) : MagixRegistryMessage()
+
 /**
  * Launch a magix registry loop service based on local registry
  */
 public fun CoroutineScope.launchMagixRegistry(
+    endpointName: String,
     endpoint: MagixEndpoint,
     registry: MagixRegistry,
     originFilter: Collection<String>? = null,
     targetFilter: Collection<String>? = null,
 ): Job = endpoint.subscribe(MagixRegistryMessage.format, originFilter, targetFilter)
     .onEach { (magixMessage, payload) ->
-        if (payload is MagixRegistryRequestMessage) {
-            try {
-                val value = registry.request(payload.propertyName, magixMessage.user)
-                endpoint.send(
-                    MagixRegistryMessage.format,
-                    MagixRegistryValueMessage(payload.propertyName, value ?: JsonNull)
-                )
-            } catch (ex: Exception) {
-                endpoint.send(
-                    MagixRegistryMessage.format,
-                    MagixRegistryErrorMessage(payload.propertyName, ex::class.simpleName, ex.message)
-                )
+        try {
+            when {
+                payload is MagixRegistryRequestMessage -> {
+                    endpoint.send(
+                        MagixRegistryMessage.format,
+                        MagixRegistryValueMessage(payload.propertyName, registry.get(payload.propertyName) ?: JsonNull),
+                        source = endpointName,
+                        target = magixMessage.sourceEndpoint,
+                        parentId = magixMessage.id
+                    )
+                }
+
+                payload is MagixRegistryModifyMessage && registry is MutableMagixRegistry -> {
+                    registry.set(payload.propertyName, payload.value, magixMessage.user)
+                    // Broadcast updates. Do not set target
+                    endpoint.send(
+                        MagixRegistryMessage.format,
+                        MagixRegistryValueMessage(
+                            payload.propertyName,
+                            registry.get(payload.propertyName)
+                        ),
+                        source = endpointName,
+                        parentId = magixMessage.id
+                    )
+                }
             }
+        } catch (ex: Exception) {
+            endpoint.send(
+                MagixRegistryMessage.format,
+                MagixRegistryErrorMessage(payload.propertyName, ex::class.simpleName, ex.message),
+                source = endpointName,
+                target = magixMessage.sourceEndpoint,
+                parentId = magixMessage.id
+            )
         }
     }.launchIn(this)
 
@@ -92,20 +125,29 @@ public fun CoroutineScope.launchMagixRegistry(
  * The subscriber can terminate the flow at any moment to stop subscription, or use it indefinitely to continue observing changes.
  * To request a single value, use [Flow.first] function.
  *
- * If [targetEndpoint] field is provided, send request only to given endpoint.
+ * If [registryEndpoint] field is provided, send request only to given endpoint.
+ *
+ * @param endpointName the name of endpoint requesting a property
  */
 public suspend fun MagixEndpoint.getProperty(
     propertyName: String,
+    endpointName: String,
     user: JsonElement? = null,
-    targetEndpoint: String? = null,
-): Flow<Pair<String, JsonElement>> {
-    send(MagixRegistryMessage.format, MagixRegistryRequestMessage(propertyName), target = targetEndpoint, user = user)
-    return subscribe(
+    registryEndpoint: String? = null,
+): Flow<Pair<String, JsonElement>> = subscribe(
+    MagixRegistryMessage.format,
+    originFilter = registryEndpoint?.let { setOf(it) }
+).mapNotNull { (message, response) ->
+    if (response is MagixRegistryValueMessage && response.propertyName == propertyName) {
+        message.sourceEndpoint to (response.value ?: return@mapNotNull null)
+    } else null
+}.also {
+    //send the initial request after subscription
+    send(
         MagixRegistryMessage.format,
-        originFilter = targetEndpoint?.let { setOf(it) }
-    ).mapNotNull { (message, response) ->
-        if (response is MagixRegistryValueMessage && response.propertyName == propertyName) {
-            message.sourceEndpoint to response.value
-        } else null
-    }
+        MagixRegistryRequestMessage(propertyName),
+        source = endpointName,
+        target = registryEndpoint,
+        user = user
+    )
 }
\ No newline at end of file
diff --git a/magix/magix-storage/src/commonMain/kotlin/space/kscience/magix/storage/historyEndpoint.kt b/magix/magix-storage/src/commonMain/kotlin/space/kscience/magix/storage/historyEndpoint.kt
index c0ec3f9..466fcb8 100644
--- a/magix/magix-storage/src/commonMain/kotlin/space/kscience/magix/storage/historyEndpoint.kt
+++ b/magix/magix-storage/src/commonMain/kotlin/space/kscience/magix/storage/historyEndpoint.kt
@@ -50,11 +50,11 @@ public fun MagixEndpoint.launchHistory(
             send(
                 format = MagixHistory.magixFormat,
                 payload = sendPayload,
+                source = origin,
                 target = request.sourceEndpoint,
                 id = generateId(request),
                 parentId = request.id,
                 user = user,
-                origin = origin,
             )
         }
     }
diff --git a/settings.gradle.kts b/settings.gradle.kts
index db083c4..04874d5 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -60,7 +60,7 @@ include(
     ":magix:magix-mqtt",
     ":magix:magix-storage",
     ":magix:magix-storage:magix-storage-xodus",
-    ":controls-magix-client",
+    ":controls-magix",
     ":demo:all-things",
     ":demo:many-devices",
     ":demo:magix-demo",