diff --git a/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/ktor/client/NewFlowsWebsockets.kt b/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/ktor/client/NewFlowsWebsockets.kt
index ba84f813bac..4ee959eceb3 100644
--- a/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/ktor/client/NewFlowsWebsockets.kt
+++ b/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/ktor/client/NewFlowsWebsockets.kt
@@ -9,6 +9,7 @@ import io.ktor.client.plugins.websocket.*
 import io.ktor.client.request.HttpRequestBuilder
 import io.ktor.websocket.Frame
 import io.ktor.websocket.readBytes
+import io.ktor.websocket.serialization.sendSerializedBase
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.channelFlow
 import kotlinx.coroutines.isActive
@@ -18,9 +19,9 @@ import kotlinx.serialization.DeserializationStrategy
  * @param checkReconnection This lambda will be called when it is required to reconnect to websocket to establish
  * connection. Must return true in case if must be reconnected. By default always reconnecting
  */
-inline fun <T> HttpClient.createStandardWebsocketFlow(
+inline fun <reified T> HttpClient.createStandardWebsocketFlow(
     url: String,
-    crossinline checkReconnection: suspend (Throwable?) -> Boolean = { true },
+    noinline checkReconnection: suspend (Throwable?) -> Boolean = { true },
     noinline requestBuilder: HttpRequestBuilder.() -> Unit = {}
 ): Flow<T> {
     pluginOrNull(WebSockets) ?: error("Plugin $WebSockets must be installed for using createStandardWebsocketFlow")
diff --git a/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/StandartCRUDRepo.kt b/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/StandartCRUDRepo.kt
index df64fc47de7..33911b8d8ed 100644
--- a/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/StandartCRUDRepo.kt
+++ b/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/StandartCRUDRepo.kt
@@ -42,4 +42,11 @@ suspend fun <ObjectType, IdType, InputValueType> WriteStandardCRUDRepo<ObjectTyp
 
 interface StandardCRUDRepo<ObjectType, IdType, InputValueType> : ReadStandardCRUDRepo<ObjectType, IdType>,
     WriteStandardCRUDRepo<ObjectType, IdType, InputValueType>
-typealias CRUDRepo<ObjectType, IdType, InputValueType> = StandardCRUDRepo<ObjectType, IdType, InputValueType>
\ No newline at end of file
+typealias CRUDRepo<ObjectType, IdType, InputValueType> = StandardCRUDRepo<ObjectType, IdType, InputValueType>
+
+class DelegateBasedStandardCRUDRepo<ObjectType, IdType, InputValueType>(
+    readDelegate: ReadStandardCRUDRepo<ObjectType, IdType>,
+    writeDelegate: WriteStandardCRUDRepo<ObjectType, IdType, InputValueType>
+) : StandardCRUDRepo<ObjectType, IdType, InputValueType>,
+    ReadStandardCRUDRepo<ObjectType, IdType> by readDelegate,
+    WriteStandardCRUDRepo<ObjectType, IdType, InputValueType> by writeDelegate
diff --git a/repos/inmemory/src/commonMain/kotlin/dev/inmo/micro_utils/repos/MapCRUDRepo.kt b/repos/inmemory/src/commonMain/kotlin/dev/inmo/micro_utils/repos/MapCRUDRepo.kt
index 1d605a4c77b..e040c478112 100644
--- a/repos/inmemory/src/commonMain/kotlin/dev/inmo/micro_utils/repos/MapCRUDRepo.kt
+++ b/repos/inmemory/src/commonMain/kotlin/dev/inmo/micro_utils/repos/MapCRUDRepo.kt
@@ -74,19 +74,24 @@ abstract class MapCRUDRepo<ObjectType, IdType, InputValueType>(
 
 fun <ObjectType, IdType, InputValueType> MapCRUDRepo(
     map: MutableMap<IdType, ObjectType>,
-    updateCallback: suspend (newValue: InputValueType, id: IdType, old: ObjectType) -> ObjectType,
-    createCallback: suspend (newValue: InputValueType) -> Pair<IdType, ObjectType>
+    updateCallback: suspend MutableMap<IdType, ObjectType>.(newValue: InputValueType, id: IdType, old: ObjectType) -> ObjectType,
+    createCallback: suspend MutableMap<IdType, ObjectType>.(newValue: InputValueType) -> Pair<IdType, ObjectType>
 ) = object : MapCRUDRepo<ObjectType, IdType, InputValueType>(map) {
     override suspend fun updateObject(
         newValue: InputValueType,
         id: IdType,
         old: ObjectType
-    ): ObjectType = updateCallback(newValue, id, old)
+    ): ObjectType = map.updateCallback(newValue, id, old)
 
-    override suspend fun createObject(newValue: InputValueType): Pair<IdType, ObjectType> = createCallback(newValue)
+    override suspend fun createObject(newValue: InputValueType): Pair<IdType, ObjectType> = map.createCallback(newValue)
 }
 
+fun <ObjectType, IdType, InputValueType> MapCRUDRepo(
+    updateCallback: suspend MutableMap<IdType, ObjectType>.(newValue: InputValueType, id: IdType, old: ObjectType) -> ObjectType,
+    createCallback: suspend MutableMap<IdType, ObjectType>.(newValue: InputValueType) -> Pair<IdType, ObjectType>
+) = MapCRUDRepo(mutableMapOf(), updateCallback, createCallback)
+
 fun <ObjectType, IdType, InputValueType> MutableMap<IdType, ObjectType>.asCrudRepo(
-    updateCallback: suspend (newValue: InputValueType, id: IdType, old: ObjectType) -> ObjectType,
-    createCallback: suspend (newValue: InputValueType) -> Pair<IdType, ObjectType>
+    updateCallback: suspend MutableMap<IdType, ObjectType>.(newValue: InputValueType, id: IdType, old: ObjectType) -> ObjectType,
+    createCallback: suspend MutableMap<IdType, ObjectType>.(newValue: InputValueType) -> Pair<IdType, ObjectType>
 ) = MapCRUDRepo(this, updateCallback, createCallback)
diff --git a/repos/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/repos/ktor/client/crud/KtorReadStandardCrudRepoClient.kt b/repos/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/repos/ktor/client/crud/KtorReadStandardCrudRepoClient.kt
index e7f00f3a40e..ce280f2c8bf 100644
--- a/repos/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/repos/ktor/client/crud/KtorReadStandardCrudRepoClient.kt
+++ b/repos/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/repos/ktor/client/crud/KtorReadStandardCrudRepoClient.kt
@@ -7,7 +7,7 @@ import dev.inmo.micro_utils.repos.ktor.common.crud.*
 import io.ktor.client.HttpClient
 import io.ktor.client.call.body
 import io.ktor.client.request.get
-import io.ktor.http.HttpStatusCode
+import io.ktor.http.*
 import io.ktor.util.reflect.TypeInfo
 import io.ktor.util.reflect.typeInfo
 import kotlinx.serialization.*
@@ -16,11 +16,14 @@ class KtorReadStandardCrudRepoClient<ObjectType, IdType> (
     private val baseUrl: String,
     private val httpClient: HttpClient,
     private val objectType: TypeInfo,
+    private val contentType: ContentType,
     private val idSerializer: suspend (IdType) -> String
 ) : ReadStandardCRUDRepo<ObjectType, IdType> {
     override suspend fun getByPagination(pagination: Pagination): PaginationResult<ObjectType> = httpClient.get(
         buildStandardUrl(baseUrl, getByPaginationRouting, pagination.asUrlQueryParts)
-    ).body()
+    ) {
+        contentType(contentType)
+    }.body()
 
     override suspend fun getById(id: IdType): ObjectType? = httpClient.get(
         buildStandardUrl(
@@ -30,7 +33,9 @@ class KtorReadStandardCrudRepoClient<ObjectType, IdType> (
                 "id" to idSerializer(id)
             )
         )
-    ).takeIf { it.status != HttpStatusCode.NoContent } ?.body<ObjectType>(objectType)
+    ) {
+        contentType(contentType)
+    }.takeIf { it.status != HttpStatusCode.NoContent } ?.body<ObjectType>(objectType)
 
     override suspend fun contains(id: IdType): Boolean = httpClient.get(
         buildStandardUrl(
@@ -40,24 +45,30 @@ class KtorReadStandardCrudRepoClient<ObjectType, IdType> (
                 "id" to idSerializer(id)
             )
         )
-    ).body()
+    ) {
+        contentType(contentType)
+    }.body()
 
     override suspend fun count(): Long = httpClient.get(
         buildStandardUrl(
             baseUrl,
             countRouting
         )
-    ).body()
+    ) {
+        contentType(contentType)
+    }.body()
 }
 
 inline fun <reified ObjectType, IdType> KtorReadStandardCrudRepoClient(
     baseUrl: String,
     httpClient: HttpClient,
+    contentType: ContentType,
     noinline idSerializer: suspend (IdType) -> String
 ) = KtorReadStandardCrudRepoClient<ObjectType, IdType>(
     baseUrl,
     httpClient,
     typeInfo<ObjectType>(),
+    contentType,
     idSerializer
 )
 
@@ -65,8 +76,9 @@ inline fun <reified ObjectType, IdType> KtorReadStandardCrudRepoClient(
     baseUrl: String,
     httpClient: HttpClient,
     idsSerializer: KSerializer<IdType>,
-    serialFormat: StringFormat
-) = KtorReadStandardCrudRepoClient<ObjectType, IdType>(baseUrl, httpClient) {
+    serialFormat: StringFormat,
+    contentType: ContentType,
+) = KtorReadStandardCrudRepoClient<ObjectType, IdType>(baseUrl, httpClient, contentType) {
     serialFormat.encodeToString(idsSerializer, it)
 }
 
@@ -74,7 +86,8 @@ inline fun <reified ObjectType, IdType> KtorReadStandardCrudRepoClient(
     baseUrl: String,
     httpClient: HttpClient,
     idsSerializer: KSerializer<IdType>,
-    serialFormat: BinaryFormat
-) = KtorReadStandardCrudRepoClient<ObjectType, IdType>(baseUrl, httpClient) {
+    serialFormat: BinaryFormat,
+    contentType: ContentType,
+) = KtorReadStandardCrudRepoClient<ObjectType, IdType>(baseUrl, httpClient, contentType) {
     serialFormat.encodeHex(idsSerializer, it)
 }
diff --git a/repos/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/repos/ktor/client/crud/KtorStandardCrudRepoClient.kt b/repos/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/repos/ktor/client/crud/KtorStandardCrudRepoClient.kt
index aa6bc86600e..d32a072f26c 100644
--- a/repos/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/repos/ktor/client/crud/KtorStandardCrudRepoClient.kt
+++ b/repos/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/repos/ktor/client/crud/KtorStandardCrudRepoClient.kt
@@ -3,91 +3,120 @@ package dev.inmo.micro_utils.repos.ktor.client.crud
 import dev.inmo.micro_utils.ktor.common.*
 import dev.inmo.micro_utils.repos.*
 import io.ktor.client.HttpClient
+import io.ktor.client.utils.EmptyContent.contentType
+import io.ktor.http.ContentType
 import io.ktor.util.reflect.TypeInfo
 import io.ktor.util.reflect.typeInfo
 import kotlinx.serialization.*
 
 class KtorStandardCrudRepoClient<ObjectType, IdType, InputValue> (
-    baseUrl: String,
-    httpClient: HttpClient,
-    objectTypeInfo: TypeInfo,
-    idSerializer: suspend (IdType) -> String
-) : StandardCRUDRepo<ObjectType, IdType, InputValue>,
-    ReadStandardCRUDRepo<ObjectType, IdType> by KtorReadStandardCrudRepoClient(
-        baseUrl,
-        httpClient,
-        objectTypeInfo,
-        idSerializer
-    ),
-    WriteStandardCRUDRepo<ObjectType, IdType, InputValue> by KtorWriteStandardCrudRepoClient(
-        baseUrl,
-        httpClient
-    ) {
-    constructor(
-        baseUrl: String,
-        subpart: String,
-        httpClient: HttpClient,
-        objectTypeInfo: TypeInfo,
-        idSerializer: suspend (IdType) -> String
-    ) : this(
-        buildStandardUrl(baseUrl, subpart), httpClient, objectTypeInfo, idSerializer
-    )
+    readDelegate: ReadStandardCRUDRepo<ObjectType, IdType>,
+    writeDelegate: WriteStandardCRUDRepo<ObjectType, IdType, InputValue>
+) : StandardCRUDRepo<ObjectType, IdType, InputValue> by DelegateBasedStandardCRUDRepo(
+    readDelegate,
+    writeDelegate
+) {
+    companion object {
+        inline operator fun <reified ObjectType, reified IdType, reified InputValue>invoke(
+            baseUrl: String,
+            httpClient: HttpClient,
+            objectTypeInfo: TypeInfo,
+            contentType: ContentType,
+            noinline idSerializer: suspend (IdType) -> String
+        ) = KtorStandardCrudRepoClient(
+            KtorReadStandardCrudRepoClient(
+                baseUrl,
+                httpClient,
+                objectTypeInfo,
+                contentType,
+                idSerializer
+            ),
+            KtorWriteStandardCrudRepoClient<ObjectType, IdType, InputValue>(
+                baseUrl,
+                httpClient,
+                contentType
+            )
+        )
+
+        inline operator fun <reified ObjectType, reified IdType, reified InputValue>invoke(
+            baseUrl: String,
+            subpart: String,
+            httpClient: HttpClient,
+            objectTypeInfo: TypeInfo,
+            contentType: ContentType,
+            noinline idSerializer: suspend (IdType) -> String
+        ) = KtorStandardCrudRepoClient<ObjectType, IdType, InputValue>(
+            buildStandardUrl(baseUrl, subpart),
+            httpClient,
+            objectTypeInfo,
+            contentType,
+            idSerializer
+        )
+    }
 }
 
 
-inline fun <reified ObjectType, IdType, InputValue> KtorStandardCrudRepoClient(
+inline fun <reified ObjectType, reified IdType, reified InputValue> KtorStandardCrudRepoClient(
     baseUrl: String,
     httpClient: HttpClient,
+    contentType: ContentType,
     noinline idSerializer: suspend (IdType) -> String
 ) = KtorStandardCrudRepoClient<ObjectType, IdType, InputValue>(
     baseUrl,
     httpClient,
     typeInfo<ObjectType>(),
+    contentType,
     idSerializer
 )
 
-inline fun <reified ObjectType, IdType, InputValue> KtorStandardCrudRepoClient(
+inline fun <reified ObjectType, reified IdType, reified InputValue> KtorStandardCrudRepoClient(
     baseUrl: String,
     httpClient: HttpClient,
     idsSerializer: KSerializer<IdType>,
-    serialFormat: StringFormat
-) = KtorStandardCrudRepoClient<ObjectType, IdType, InputValue>(baseUrl, httpClient) {
+    serialFormat: StringFormat,
+    contentType: ContentType,
+) = KtorStandardCrudRepoClient<ObjectType, IdType, InputValue>(baseUrl, httpClient, contentType) {
     serialFormat.encodeToString(idsSerializer, it)
 }
 
-inline fun <reified ObjectType, IdType, InputValue> KtorStandardCrudRepoClient(
+inline fun <reified ObjectType, reified IdType, reified InputValue> KtorStandardCrudRepoClient(
     baseUrl: String,
     httpClient: HttpClient,
     idsSerializer: KSerializer<IdType>,
-    serialFormat: BinaryFormat
-) = KtorStandardCrudRepoClient<ObjectType, IdType, InputValue>(baseUrl, httpClient) {
+    serialFormat: BinaryFormat,
+    contentType: ContentType,
+) = KtorStandardCrudRepoClient<ObjectType, IdType, InputValue>(baseUrl, httpClient, contentType) {
     serialFormat.encodeHex(idsSerializer, it)
 }
 
 
-inline fun <reified ObjectType, IdType, InputValue> KtorStandardCrudRepoClient(
+inline fun <reified ObjectType, reified IdType, reified InputValue> KtorStandardCrudRepoClient(
     baseUrl: String,
     subpart: String,
     httpClient: HttpClient,
+    contentType: ContentType,
     noinline idSerializer: suspend (IdType) -> String
 ) = KtorStandardCrudRepoClient<ObjectType, IdType, InputValue>(
     buildStandardUrl(baseUrl, subpart),
     httpClient,
+    contentType,
     idSerializer
 )
 
-inline fun <reified ObjectType, IdType, InputValue> KtorStandardCrudRepoClient(
+inline fun <reified ObjectType, reified IdType, reified InputValue> KtorStandardCrudRepoClient(
     baseUrl: String,
     subpart: String,
     httpClient: HttpClient,
     idsSerializer: KSerializer<IdType>,
-    serialFormat: StringFormat
-) = KtorStandardCrudRepoClient<ObjectType, IdType, InputValue>(buildStandardUrl(baseUrl, subpart), httpClient, idsSerializer, serialFormat)
+    serialFormat: StringFormat,
+    contentType: ContentType,
+) = KtorStandardCrudRepoClient<ObjectType, IdType, InputValue>(buildStandardUrl(baseUrl, subpart), httpClient, idsSerializer, serialFormat, contentType)
 
-inline fun <reified ObjectType, IdType, InputValue> KtorStandardCrudRepoClient(
+inline fun <reified ObjectType, reified IdType, reified InputValue> KtorStandardCrudRepoClient(
     baseUrl: String,
     subpart: String,
     httpClient: HttpClient,
     idsSerializer: KSerializer<IdType>,
-    serialFormat: BinaryFormat
-) = KtorStandardCrudRepoClient<ObjectType, IdType, InputValue>(buildStandardUrl(baseUrl, subpart), httpClient, idsSerializer, serialFormat)
+    serialFormat: BinaryFormat,
+    contentType: ContentType,
+) = KtorStandardCrudRepoClient<ObjectType, IdType, InputValue>(buildStandardUrl(baseUrl, subpart), httpClient, idsSerializer, serialFormat, contentType)
diff --git a/repos/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/repos/ktor/client/crud/KtorWriteStandardCrudRepoClient.kt b/repos/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/repos/ktor/client/crud/KtorWriteStandardCrudRepoClient.kt
index b0f9e27a9f0..0c5e6673b12 100644
--- a/repos/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/repos/ktor/client/crud/KtorWriteStandardCrudRepoClient.kt
+++ b/repos/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/repos/ktor/client/crud/KtorWriteStandardCrudRepoClient.kt
@@ -8,6 +8,9 @@ import dev.inmo.micro_utils.repos.ktor.common.crud.*
 import io.ktor.client.HttpClient
 import io.ktor.client.call.body
 import io.ktor.client.request.*
+import io.ktor.client.statement.HttpResponse
+import io.ktor.http.ContentType
+import io.ktor.http.contentType
 import io.ktor.util.reflect.TypeInfo
 import io.ktor.util.reflect.typeInfo
 import kotlinx.coroutines.flow.Flow
@@ -16,36 +19,71 @@ import kotlinx.serialization.builtins.*
 
 class KtorWriteStandardCrudRepoClient<ObjectType, IdType, InputValue> (
     private val baseUrl: String,
-    private val httpClient: HttpClient
+    private val httpClient: HttpClient,
+    override val newObjectsFlow: Flow<ObjectType>,
+    override val updatedObjectsFlow: Flow<ObjectType>,
+    override val deletedObjectsIdsFlow: Flow<IdType>,
+    private val createSetup: suspend HttpRequestBuilder.(List<InputValue>) -> Unit,
+    private val updateSetup: suspend HttpRequestBuilder.(List<UpdatedValuePair<IdType, InputValue>>) -> Unit,
+    private val deleteByIdSetup: suspend HttpRequestBuilder.(List<IdType>) -> Unit,
+    private val createBodyGetter: suspend HttpResponse.() -> List<ObjectType>,
+    private val updateBodyGetter: suspend HttpResponse.() -> List<ObjectType>
 ) : WriteStandardCRUDRepo<ObjectType, IdType, InputValue> {
+    override suspend fun create(values: List<InputValue>): List<ObjectType> = httpClient.post(
+        buildStandardUrl(baseUrl, createRouting)
+    ) {
+        createSetup(values)
+    }.createBodyGetter()
 
-    override val newObjectsFlow: Flow<ObjectType> = httpClient.createStandardWebsocketFlow(
-        buildStandardUrl(baseUrl, newObjectsFlowRouting),
-    )
-    override val updatedObjectsFlow: Flow<ObjectType> = httpClient.createStandardWebsocketFlow(
-        buildStandardUrl(baseUrl, updatedObjectsFlowRouting)
-    )
-    override val deletedObjectsIdsFlow: Flow<IdType> = httpClient.createStandardWebsocketFlow(
-        buildStandardUrl(baseUrl, deletedObjectsIdsFlowRouting)
-    )
-
-
-    override suspend fun create(values: List<InputValue>): List<ObjectType> = httpClient.post {
-        url(buildStandardUrl(baseUrl, createRouting))
-        setBody(values)
-    }.body()
-
-    override suspend fun update(values: List<UpdatedValuePair<IdType, InputValue>>): List<ObjectType> = httpClient.post {
-        url(buildStandardUrl(baseUrl, updateManyRouting))
-        setBody(values)
-    }.body()
+    override suspend fun update(
+        values: List<UpdatedValuePair<IdType, InputValue>>
+    ): List<ObjectType> = httpClient.post(
+        buildStandardUrl(baseUrl, updateManyRouting)
+    ) {
+        updateSetup(values)
+    }.updateBodyGetter()
 
     override suspend fun update(id: IdType, value: InputValue): ObjectType? = update(listOf(id to value)).firstOrNull()
 
     override suspend fun deleteById(ids: List<IdType>) {
-        httpClient.post {
-            url(buildStandardUrl(baseUrl, deleteByIdRouting))
-            setBody(ids)
-        }
+        httpClient.post(
+            buildStandardUrl(baseUrl, deleteByIdRouting)
+        ) {
+            deleteByIdSetup(ids)
+        }.status
+    }
+
+    companion object {
+        inline operator fun <reified ObjectType, reified IdType, reified InputValue> invoke(
+            baseUrl: String,
+            httpClient: HttpClient,
+            contentType: ContentType
+        ) = KtorWriteStandardCrudRepoClient<ObjectType, IdType, InputValue>(
+            baseUrl,
+            httpClient,
+            httpClient.createStandardWebsocketFlow(
+                buildStandardUrl(baseUrl, newObjectsFlowRouting),
+            ),
+            httpClient.createStandardWebsocketFlow(
+                buildStandardUrl(baseUrl, updatedObjectsFlowRouting),
+            ),
+            httpClient.createStandardWebsocketFlow(
+                buildStandardUrl(baseUrl, deletedObjectsIdsFlowRouting),
+            ),
+            {
+                contentType(contentType)
+                setBody(it)
+            },
+            {
+                contentType(contentType)
+                setBody(it)
+            },
+            {
+                contentType(contentType)
+                setBody(it)
+            },
+            { body() },
+            { body() }
+        )
     }
 }