diff --git a/ktor/common/src/commonMain/kotlin/com/insanusmokrassar/postssystem/ktor/HexConversations.kt b/ktor/common/src/commonMain/kotlin/com/insanusmokrassar/postssystem/ktor/HexConversations.kt
new file mode 100644
index 00000000..94e7603d
--- /dev/null
+++ b/ktor/common/src/commonMain/kotlin/com/insanusmokrassar/postssystem/ktor/HexConversations.kt
@@ -0,0 +1,6 @@
+package com.insanusmokrassar.postssystem.ktor
+
+import kotlinx.serialization.SerializationStrategy
+import kotlinx.serialization.encodeToHexString
+
+fun <T> T.toHex(with: SerializationStrategy<T>) = standardKtorSerialFormat.encodeToHexString(with, this)
diff --git a/ktor/server/src/jvmMain/kotlin/com/insanusmokrassar/postssystem/ktor/server/ServerRoutingShortcuts.kt b/ktor/server/src/jvmMain/kotlin/com/insanusmokrassar/postssystem/ktor/server/ServerRoutingShortcuts.kt
index 59e10dbb..27734adb 100644
--- a/ktor/server/src/jvmMain/kotlin/com/insanusmokrassar/postssystem/ktor/server/ServerRoutingShortcuts.kt
+++ b/ktor/server/src/jvmMain/kotlin/com/insanusmokrassar/postssystem/ktor/server/ServerRoutingShortcuts.kt
@@ -2,12 +2,12 @@ package com.insanusmokrassar.postssystem.ktor.server
 
 import com.insanusmokrassar.postssystem.ktor.standardKtorSerialFormat
 import io.ktor.application.ApplicationCall
+import io.ktor.application.call
 import io.ktor.http.HttpStatusCode
 import io.ktor.response.respond
 import io.ktor.response.respondBytes
 import io.ktor.util.toByteArray
-import kotlinx.serialization.DeserializationStrategy
-import kotlinx.serialization.SerializationStrategy
+import kotlinx.serialization.*
 
 suspend fun <T> ApplicationCall.unianswer(
     answerSerializer: SerializationStrategy<T>,
@@ -26,6 +26,23 @@ suspend fun <T> ApplicationCall.uniload(
     request.receiveChannel().toByteArray()
 )
 
+fun <T> ApplicationCall.uniloadFromQuery(
+    parameterName: String,
+    deserializer: DeserializationStrategy<T>
+): T? {
+    return standardKtorSerialFormat.decodeFromHexString(
+        deserializer,
+        getQueryParameter(parameterName) ?: return null
+    )
+}
+
+suspend fun <T> ApplicationCall.uniloadFromQueryOrSendError(
+    parameterName: String,
+    deserializer: DeserializationStrategy<T>
+): T? = uniloadFromQuery(parameterName, deserializer) ?: null.also {
+    respond(HttpStatusCode.BadRequest, "Request query parameters must contains $parameterName")
+}
+
 suspend fun ApplicationCall.getParameterOrSendError(
     field: String
 ) = parameters[field].also {
@@ -34,10 +51,14 @@ suspend fun ApplicationCall.getParameterOrSendError(
     }
 }
 
+fun ApplicationCall.getQueryParameter(
+    field: String
+) = request.queryParameters[field]
+
 suspend fun ApplicationCall.getQueryParameterOrSendError(
     field: String
-) = request.queryParameters[field].also {
+) = getQueryParameter(field).also {
     if (it == null) {
-        respond(HttpStatusCode.BadRequest, "Request query parametersmust contains $field")
+        respond(HttpStatusCode.BadRequest, "Request query parameters must contains $field")
     }
 }
diff --git a/utils/repos/ktor/client/src/commonMain/kotlin/com/insanusmokrassar/postssystem/utils/repos/ktor/client/KtorOneToManyKeyValueRepo.kt b/utils/repos/ktor/client/src/commonMain/kotlin/com/insanusmokrassar/postssystem/utils/repos/ktor/client/KtorOneToManyKeyValueRepo.kt
index ea67e2cc..7f00f45b 100644
--- a/utils/repos/ktor/client/src/commonMain/kotlin/com/insanusmokrassar/postssystem/utils/repos/ktor/client/KtorOneToManyKeyValueRepo.kt
+++ b/utils/repos/ktor/client/src/commonMain/kotlin/com/insanusmokrassar/postssystem/utils/repos/ktor/client/KtorOneToManyKeyValueRepo.kt
@@ -1,11 +1,9 @@
 package com.insanusmokrassar.postssystem.utils.repos.ktor.client
 
-import com.insanusmokrassar.postssystem.ktor.asUrlQueryParts
-import com.insanusmokrassar.postssystem.ktor.buildStandardUrl
+import com.insanusmokrassar.postssystem.ktor.*
 import com.insanusmokrassar.postssystem.ktor.client.BodyPair
 import com.insanusmokrassar.postssystem.ktor.client.uniget
 import com.insanusmokrassar.postssystem.ktor.client.unipost
-import com.insanusmokrassar.postssystem.ktor.standardKtorSerialFormat
 import com.insanusmokrassar.postssystem.utils.common.pagination.Pagination
 import com.insanusmokrassar.postssystem.utils.common.pagination.PaginationResult
 import com.insanusmokrassar.postssystem.utils.repos.OneToManyKeyValueRepo
@@ -31,8 +29,8 @@ class KtorOneToManyReadKeyValueRepo<Key, Value> (
             baseUrl,
             getRoute,
             mapOf(
-                keyParameterName to standardKtorSerialFormat.encodeToHexString(keySerializer, k),
-                reversedParameterName to standardKtorSerialFormat.encodeToHexString(reversed)
+                keyParameterName to k.toHex(keySerializer),
+                reversedParameterName to reversed.toHex(Boolean.serializer())
             ) + pagination.asUrlQueryParts
         ),
         paginationValueResultSerializer
@@ -43,7 +41,7 @@ class KtorOneToManyReadKeyValueRepo<Key, Value> (
             baseUrl,
             keysRoute,
             mapOf(
-                reversedParameterName to standardKtorSerialFormat.encodeToHexString(reversed)
+                reversedParameterName to reversed.toHex(Boolean.serializer())
             ) + pagination.asUrlQueryParts
         ),
         paginationKeyResultSerializer
@@ -53,7 +51,7 @@ class KtorOneToManyReadKeyValueRepo<Key, Value> (
         buildStandardUrl(
             baseUrl,
             containsByKeyRoute,
-            mapOf(keyParameterName to standardKtorSerialFormat.encodeToHexString(keySerializer, k))
+            mapOf(keyParameterName to k.toHex(keySerializer))
         ),
         Boolean.serializer()
     )
@@ -63,8 +61,8 @@ class KtorOneToManyReadKeyValueRepo<Key, Value> (
             baseUrl,
             containsByKeyValueRoute,
             mapOf(
-                keyParameterName to standardKtorSerialFormat.encodeToHexString(keySerializer, k),
-                valueParameterName to standardKtorSerialFormat.encodeToHexString(valueSerializer, v),
+                keyParameterName to k.toHex(keySerializer),
+                valueParameterName to v.toHex(valueSerializer),
             )
         ),
         Boolean.serializer()
@@ -75,7 +73,7 @@ class KtorOneToManyReadKeyValueRepo<Key, Value> (
             baseUrl,
             countByKeyRoute,
             mapOf(
-                keyParameterName to standardKtorSerialFormat.encodeToHexString(keySerializer, k) // TODO: Леша, придумай короче запись, типа keySerializer.toHexString(k)
+                keyParameterName to k.toHex(keySerializer)
             )
         ),
         Long.serializer()
diff --git a/utils/repos/ktor/client/src/commonMain/kotlin/com/insanusmokrassar/postssystem/utils/repos/ktor/client/KtorReadStandardCrudRepo.kt b/utils/repos/ktor/client/src/commonMain/kotlin/com/insanusmokrassar/postssystem/utils/repos/ktor/client/KtorReadStandardCrudRepo.kt
index bf85dbf9..57593948 100644
--- a/utils/repos/ktor/client/src/commonMain/kotlin/com/insanusmokrassar/postssystem/utils/repos/ktor/client/KtorReadStandardCrudRepo.kt
+++ b/utils/repos/ktor/client/src/commonMain/kotlin/com/insanusmokrassar/postssystem/utils/repos/ktor/client/KtorReadStandardCrudRepo.kt
@@ -30,7 +30,7 @@ class KtorReadStandardCrudRepo<ObjectType, IdType> (
             baseUrl,
             getByIdRouting,
             mapOf(
-                "id" to standardKtorSerialFormat.encodeToHexString(idsSerializer, id)
+                "id" to id.toHex(idsSerializer)
             )
         ),
         objectsSerializerNullable
@@ -41,7 +41,7 @@ class KtorReadStandardCrudRepo<ObjectType, IdType> (
             baseUrl,
             containsRouting,
             mapOf(
-                "id" to standardKtorSerialFormat.encodeToHexString(idsSerializer, id)
+                "id" to id.toHex(idsSerializer)
             )
         ),
         Boolean.serializer()
diff --git a/utils/repos/ktor/server/src/jvmMain/kotlin/com/insanusmokrassar/postssystem/utils/repos/ktor/server/KtorOneToManyKeyValueRepo.kt b/utils/repos/ktor/server/src/jvmMain/kotlin/com/insanusmokrassar/postssystem/utils/repos/ktor/server/KtorOneToManyKeyValueRepo.kt
index 38a6c288..e00812fd 100644
--- a/utils/repos/ktor/server/src/jvmMain/kotlin/com/insanusmokrassar/postssystem/utils/repos/ktor/server/KtorOneToManyKeyValueRepo.kt
+++ b/utils/repos/ktor/server/src/jvmMain/kotlin/com/insanusmokrassar/postssystem/utils/repos/ktor/server/KtorOneToManyKeyValueRepo.kt
@@ -1,11 +1,7 @@
 package com.insanusmokrassar.postssystem.utils.repos.ktor.server
 
-import com.insanusmokrassar.postssystem.ktor.server.extractPagination
-import com.insanusmokrassar.postssystem.ktor.server.getQueryParameterOrSendError
-import com.insanusmokrassar.postssystem.ktor.server.unianswer
-import com.insanusmokrassar.postssystem.ktor.server.uniload
+import com.insanusmokrassar.postssystem.ktor.server.*
 import com.insanusmokrassar.postssystem.ktor.standardKtorSerialFormat
-import com.insanusmokrassar.postssystem.utils.common.pagination.Pagination
 import com.insanusmokrassar.postssystem.utils.common.pagination.PaginationResult
 import com.insanusmokrassar.postssystem.utils.repos.OneToManyKeyValueRepo
 import com.insanusmokrassar.postssystem.utils.repos.OneToManyReadKeyValueRepo
@@ -27,14 +23,14 @@ fun <Key, Value> Route.configureOneToManyReadKeyValueRepoRoutes(
 
     get(getRoute) {
         val pagination = call.request.queryParameters.extractPagination
-        val key = standardKtorSerialFormat.decodeFromHexString(
-            keySerializer,
-            call.getQueryParameterOrSendError(keyParameterName) ?: return@get
-        ) // TODO: Леша, а это можно сократить как-то до call.decodeFromQueryHexParameter(keySerializer, keyParameterName)?
-        val reversed = standardKtorSerialFormat.decodeFromHexString(
-            Boolean.serializer(),
-            call.getQueryParameterOrSendError(reversedParameterName) ?: return@get
-        )
+        val key = call.uniloadFromQueryOrSendError(
+            keyParameterName,
+            keySerializer
+        ) ?: return@get
+        val reversed = call.uniloadFromQuery(
+            reversedParameterName,
+            Boolean.serializer()
+        ) ?: false
 
         call.unianswer(
             paginationValueResult,
@@ -44,10 +40,10 @@ fun <Key, Value> Route.configureOneToManyReadKeyValueRepoRoutes(
 
     get(keysRoute) {
         val pagination = call.request.queryParameters.extractPagination
-        val reversed = standardKtorSerialFormat.decodeFromHexString(
-            Boolean.serializer(),
-            call.getQueryParameterOrSendError(reversedParameterName) ?: return@get
-        )
+        val reversed = call.uniloadFromQuery(
+            reversedParameterName,
+            Boolean.serializer()
+        ) ?: false
 
         call.unianswer(
             paginationKeyResult,
@@ -68,14 +64,14 @@ fun <Key, Value> Route.configureOneToManyReadKeyValueRepoRoutes(
     }
 
     get(containsByKeyValueRoute) {
-        val key = standardKtorSerialFormat.decodeFromHexString(
-            keySerializer,
-            call.getQueryParameterOrSendError(keyParameterName) ?: return@get
-        )
-        val value = standardKtorSerialFormat.decodeFromHexString(
-            valueSealizer,
-            call.getQueryParameterOrSendError(valueParameterName) ?: return@get
-        )
+        val key = call.uniloadFromQueryOrSendError(
+            keyParameterName,
+            keySerializer
+        ) ?: return@get
+        val value = call.uniloadFromQueryOrSendError(
+            valueParameterName,
+            valueSealizer
+        ) ?: return@get
 
         call.unianswer(
             Boolean.serializer(),
@@ -84,10 +80,10 @@ fun <Key, Value> Route.configureOneToManyReadKeyValueRepoRoutes(
     }
 
     get(countByKeyRoute) {
-        val key = standardKtorSerialFormat.decodeFromHexString(
-            keySerializer,
-            call.getQueryParameterOrSendError(keyParameterName) ?: return@get
-        )
+        val key = call.uniloadFromQueryOrSendError(
+            keyParameterName,
+            keySerializer
+        ) ?: return@get
 
         call.unianswer(
             Long.serializer(),
diff --git a/utils/repos/ktor/server/src/jvmMain/kotlin/com/insanusmokrassar/postssystem/utils/repos/ktor/server/KtorReadStandardCrudRepo.kt b/utils/repos/ktor/server/src/jvmMain/kotlin/com/insanusmokrassar/postssystem/utils/repos/ktor/server/KtorReadStandardCrudRepo.kt
index ffd1a7fd..e3f4e355 100644
--- a/utils/repos/ktor/server/src/jvmMain/kotlin/com/insanusmokrassar/postssystem/utils/repos/ktor/server/KtorReadStandardCrudRepo.kt
+++ b/utils/repos/ktor/server/src/jvmMain/kotlin/com/insanusmokrassar/postssystem/utils/repos/ktor/server/KtorReadStandardCrudRepo.kt
@@ -30,10 +30,10 @@ fun <ObjectType, IdType> Route.configureReadStandardCrudRepoRoutes(
     }
 
     get(getByIdRouting) {
-        val id = standardKtorSerialFormat.decodeFromHexString(
-            idsSerializer,
-            call.getQueryParameterOrSendError("id") ?: return@get
-        )
+        val id = call.uniloadFromQueryOrSendError(
+            "id",
+            idsSerializer
+        ) ?: return@get
 
         call.unianswer(
             objectsNullableSerializer,
@@ -42,10 +42,10 @@ fun <ObjectType, IdType> Route.configureReadStandardCrudRepoRoutes(
     }
 
     get(containsRouting) {
-        val id = standardKtorSerialFormat.decodeFromHexString(
-            idsSerializer,
-            call.getQueryParameterOrSendError("id") ?: return@get
-        )
+        val id = call.uniloadFromQueryOrSendError(
+            "id",
+            idsSerializer
+        ) ?: return@get
 
         call.unianswer(
             Boolean.serializer(),