diff --git a/src/handlers/account/index.ts b/src/handlers/account/index.ts
index 09ed02a..342dce7 100644
--- a/src/handlers/account/index.ts
+++ b/src/handlers/account/index.ts
@@ -13,7 +13,7 @@ import type { Account } from "@/types/models/account.type";
 import type { GetAccountRequest, SetAccountRoleRequest, GetAccountsRequest, GetAccountsResponse } from "./types";
 
 export const getAccounts = async (request: GetAccountsRequest): Promise<GetAccountsResponse> => {
-  const { page, limit } = determinePaginationParameters(request?.query || {});
+  const { page, limit } = determinePaginationParameters(request?.query ?? {});
 
   const accountsCount = await AccountModel.countDocuments();
 
@@ -53,7 +53,7 @@ export const createAccount = async (request: FastifyRequest, reply: FastifyReply
 };
 
 export const getAccountByID = async (request: GetAccountRequest, reply: FastifyReply): Promise<Account> => {
-  const [getAccountRequestParams, error] = validateEmptyFields(request.params || {}, ["userId"]);
+  const [getAccountRequestParams, error] = validateEmptyFields(request.params ?? {}, ["userId"]);
 
   if (error) {
     void reply.status(400);
@@ -139,7 +139,7 @@ export const removeAccount = async (request: FastifyRequest, reply: FastifyReply
 };
 
 export const removeAccountById = async (request: GetAccountRequest, reply: FastifyReply): Promise<Account> => {
-  const [{ userId }, error] = validateEmptyFields(request.params || {}, ["userId"]);
+  const [{ userId }, error] = validateEmptyFields(request.params ?? {}, ["userId"]);
 
   if (error) {
     void reply.status(400);
@@ -186,7 +186,7 @@ export const deleteAccount = async (request: FastifyRequest, reply: FastifyReply
 };
 
 export const deleteAccountById = async (request: GetAccountRequest, reply: FastifyReply): Promise<Account> => {
-  const [{ userId }, error] = validateEmptyFields(request.params || {}, ["userId"]);
+  const [{ userId }, error] = validateEmptyFields(request.params ?? {}, ["userId"]);
 
   if (error) {
     void reply.status(400);
diff --git a/src/handlers/permission/index.ts b/src/handlers/permission/index.ts
index 6e19e06..ed4c2b1 100644
--- a/src/handlers/permission/index.ts
+++ b/src/handlers/permission/index.ts
@@ -15,7 +15,7 @@ export const getPermissionById = async (
   request: GetPermissionByIdRequest,
   reply: FastifyReply
 ): Promise<Permission | undefined> => {
-  const [{ permissionId }, validateParamsError] = validateEmptyFields(request.params || {}, ["permissionId"]);
+  const [{ permissionId }, validateParamsError] = validateEmptyFields(request.params ?? {}, ["permissionId"]);
 
   if (validateParamsError) {
     void reply.status(400);
@@ -41,7 +41,7 @@ export const getPermissionById = async (
 };
 
 export const createPermission = async (request: CreatePermissionRequest, reply: FastifyReply): Promise<Permission> => {
-  const [permission, error] = validateEmptyFields(request.body || {}, ["name", "description"]);
+  const [permission, error] = validateEmptyFields(request.body ?? {}, ["name", "description"]);
 
   if (error) {
     void reply.status(400);
@@ -57,8 +57,8 @@ export const updatePermission = async (
   request: UpdatePermissionRequest,
   reply: FastifyReply
 ): Promise<Permission | undefined> => {
-  const [permission, validateBodyError] = validateEmptyFields(request.body || {}, ["name", "description"]);
-  const [{ permissionId }, validateParamsError] = validateEmptyFields(request.params || {}, ["permissionId"]);
+  const [permission, validateBodyError] = validateEmptyFields(request.body ?? {}, ["name", "description"]);
+  const [{ permissionId }, validateParamsError] = validateEmptyFields(request.params ?? {}, ["permissionId"]);
 
   if (validateBodyError) {
     void reply.status(400);
@@ -94,7 +94,7 @@ export const removePermission = async (
   request: GetPermissionByIdRequest,
   reply: FastifyReply
 ): Promise<Permission | undefined> => {
-  const [{ permissionId }, validateParamsError] = validateEmptyFields(request.params || {}, ["permissionId"]);
+  const [{ permissionId }, validateParamsError] = validateEmptyFields(request.params ?? {}, ["permissionId"]);
 
   if (validateParamsError) {
     void reply.status(400);
@@ -131,7 +131,7 @@ export const restorePermission = async (
   request: GetPermissionByIdRequest,
   reply: FastifyReply
 ): Promise<Permission | undefined> => {
-  const [{ permissionId }, validateParamsError] = validateEmptyFields(request.params || {}, ["permissionId"]);
+  const [{ permissionId }, validateParamsError] = validateEmptyFields(request.params ?? {}, ["permissionId"]);
 
   if (validateParamsError) {
     void reply.status(400);
diff --git a/src/handlers/roles/index.ts b/src/handlers/roles/index.ts
index 88ca6f9..dd10181 100644
--- a/src/handlers/roles/index.ts
+++ b/src/handlers/roles/index.ts
@@ -103,7 +103,7 @@ export const getRole = async (request: GetRoleRequest, reply: FastifyReply) => {
 };
 
 export const replaceRole = async (request: UpdateRoleRequest, reply: FastifyReply) => {
-  const [replaceRoleRequest, error] = validateEmptyFields(request.body || {}, ["name", "permissions"]);
+  const [replaceRoleRequest, error] = validateEmptyFields(request.body ?? {}, ["name", "permissions"]);
   const { query } = request.params || {};
 
   if (error || !replaceRoleRequest) {
diff --git a/src/swagger/tariff/index.ts b/src/swagger/tariff/index.ts
index d869b8e..5fce6ba 100644
--- a/src/swagger/tariff/index.ts
+++ b/src/swagger/tariff/index.ts
@@ -1,4 +1,4 @@
-import { getTariffParams, tariffBody, replaceTariffParams } from "./inputs";
+import { getTariffParams, tariffBody, replaceTariffParams, getTariffsQuerystring } from "./inputs";
 import {
   getTariffReponse,
   getTariffsReponse,
@@ -19,6 +19,7 @@ export const getTariffSchema: SwaggerSchema = {
 export const getTariffsSchema: SwaggerSchema = {
   summary: "Получение списка тарифов",
   tags: ["tariff"],
+  querystring: getTariffsQuerystring,
   response: getTariffsReponse,
 };
 
diff --git a/src/swagger/tariff/inputs.ts b/src/swagger/tariff/inputs.ts
index 23baeb2..1c2b5db 100644
--- a/src/swagger/tariff/inputs.ts
+++ b/src/swagger/tariff/inputs.ts
@@ -12,6 +12,20 @@ export const getTariffParams: SwaggerMessage = {
   examples: [{ id: "507f1f77bcf86cd799439011" }],
 };
 
+export const getTariffsQuerystring: SwaggerMessage = {
+  type: "object",
+  properties: {
+    page: {
+      type: "number",
+      description: "номер страницы",
+    },
+    limit: {
+      type: "number",
+      description: "Лимит количества аккаунтов (больше 100 не обрабатывается)",
+    },
+  },
+};
+
 export const tariffBody: SwaggerMessage = {
   type: "object",
   description: "Тариф",
diff --git a/src/swagger/tariff/responses.ts b/src/swagger/tariff/responses.ts
index 6339706..d8e4a7b 100644
--- a/src/swagger/tariff/responses.ts
+++ b/src/swagger/tariff/responses.ts
@@ -1,6 +1,6 @@
 import { swaggerError } from "@/utils/swagger-error";
 
-import { tariff } from "./models";
+import { tariff, tariffs } from "./models";
 
 import type { SwaggerMessage } from "@/types/swagger.type";
 
@@ -11,11 +11,7 @@ export const getTariffReponse: Record<string, SwaggerMessage> = {
 };
 
 export const getTariffsReponse: Record<string, SwaggerMessage> = {
-  200: {
-    type: "array",
-    description: "Массив тарифов",
-    items: tariff,
-  },
+  200: tariffs,
 };
 
 export const createTariffReponse: Record<string, SwaggerMessage> = {