diff --git a/.vscode/extensions.json b/.vscode/extensions.json
index a593a25..7b1f535 100644
--- a/.vscode/extensions.json
+++ b/.vscode/extensions.json
@@ -4,6 +4,7 @@
         "ms-azuretools.vscode-docker",
         "vscode-icons-team.vscode-icons",
         "dbaeumer.vscode-eslint",
-        "esbenp.prettier-vscode"
+        "esbenp.prettier-vscode",
+        "yoavbls.pretty-ts-errors"
     ]
 }
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
index b7bb8b8..c55feba 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,6 +1,9 @@
 {
     "editor.formatOnSave": true,
     "editor.formatOnPaste": true,
+    "editor.codeActionsOnSave": {
+        "source.fixAll.eslint": true
+    },
     "[prisma]": {
         "editor.defaultFormatter": "Prisma.prisma"
     },
diff --git a/sdk/kickstart_fastify_1.0.4.ts b/sdk/kickstart_fastify_1.0.4.ts
index c331cdd..40832bf 100644
--- a/sdk/kickstart_fastify_1.0.4.ts
+++ b/sdk/kickstart_fastify_1.0.4.ts
@@ -20,8 +20,18 @@ export interface LoginRequest {
 
 export type LoginResult = object
 
+export interface LoginResponse {
+    result: LoginResult
+    message?: string
+}
+
 export type LogoutResult = object
 
+export interface LogoutResponse {
+    result: LogoutResult
+    message?: string
+}
+
 export interface CreateProductRequest {
     /**
      * @minLength 1
@@ -57,6 +67,11 @@ export interface CreateProductResult {
     productPrice: number
 }
 
+export interface CreateProductResponse {
+    result: CreateProductResult
+    message?: string
+}
+
 export interface DeleteProductByIdParams {
     /**
      * @minLength 12
@@ -67,6 +82,11 @@ export interface DeleteProductByIdParams {
 
 export type DeleteProductByIdResult = object
 
+export interface DeleteProductByIdResponse {
+    result: DeleteProductByIdResult
+    message?: string
+}
+
 export interface GetProductByIdParams {
     /**
      * @minLength 12
@@ -95,6 +115,11 @@ export interface GetProductByIdResult {
     productPrice: number
 }
 
+export interface GetProductByIdResponse {
+    result: GetProductByIdResult
+    message?: string
+}
+
 export interface GetProductsQuery {
     /**
      * @minLength 12
@@ -137,6 +162,11 @@ export type GetProductsResult = {
     productPrice: number
 }[]
 
+export interface GetProductsResponse {
+    result: GetProductsResult
+    message?: string
+}
+
 export interface UpdateProductRequest {
     /**
      * @minLength 12
@@ -177,6 +207,11 @@ export interface UpdateProductResult {
     productPrice: number
 }
 
+export interface UpdateProductResponse {
+    result: UpdateProductResult
+    message?: string
+}
+
 export type QueryParamsType = Record<string | number, any>
 export type ResponseFormat = keyof Omit<Body, 'body' | 'bodyUsed'>
 
@@ -382,13 +417,7 @@ export class Api<SecurityDataType extends unknown> extends HttpClient<SecurityDa
          * @request POST:/auth/login
          */
         login: (data: LoginRequest, params: RequestParams = {}) =>
-            this.request<
-                {
-                    result: LoginResult
-                    message?: string
-                },
-                any
-            >({
+            this.request<LoginResponse, any>({
                 path: `/auth/login`,
                 method: 'POST',
                 body: data,
@@ -406,13 +435,7 @@ export class Api<SecurityDataType extends unknown> extends HttpClient<SecurityDa
          * @request POST:/auth/logout
          */
         logout: (params: RequestParams = {}) =>
-            this.request<
-                {
-                    result: LogoutResult
-                    message?: string
-                },
-                any
-            >({
+            this.request<LogoutResponse, any>({
                 path: `/auth/logout`,
                 method: 'POST',
                 format: 'json',
@@ -428,30 +451,8 @@ export class Api<SecurityDataType extends unknown> extends HttpClient<SecurityDa
          * @summary create a new product
          * @request POST:/product
          */
-        createProduct: (
-            data: {
-                /**
-                 * @minLength 1
-                 * @maxLength 100
-                 */
-                productName: string
-                /**
-                 * @minLength 1
-                 * @maxLength 500
-                 */
-                productDescription: string
-                /** @min 1 */
-                productPrice: number
-            },
-            params: RequestParams = {},
-        ) =>
-            this.request<
-                {
-                    result: CreateProductResult
-                    message?: string
-                },
-                any
-            >({
+        createProduct: (data: CreateProductRequest, params: RequestParams = {}) =>
+            this.request<CreateProductResponse, any>({
                 path: `/product`,
                 method: 'POST',
                 body: data,
@@ -492,13 +493,7 @@ export class Api<SecurityDataType extends unknown> extends HttpClient<SecurityDa
             },
             params: RequestParams = {},
         ) =>
-            this.request<
-                {
-                    result: GetProductsResult
-                    message?: string
-                },
-                any
-            >({
+            this.request<GetProductsResponse, any>({
                 path: `/product`,
                 method: 'GET',
                 query: query,
@@ -514,35 +509,8 @@ export class Api<SecurityDataType extends unknown> extends HttpClient<SecurityDa
          * @summary update a product
          * @request PUT:/product
          */
-        updateProduct: (
-            data: {
-                /**
-                 * @minLength 12
-                 * @maxLength 12
-                 */
-                productId: string
-                /**
-                 * @minLength 1
-                 * @maxLength 100
-                 */
-                productName: string
-                /**
-                 * @minLength 1
-                 * @maxLength 500
-                 */
-                productDescription: string
-                /** @min 1 */
-                productPrice: number
-            },
-            params: RequestParams = {},
-        ) =>
-            this.request<
-                {
-                    result: UpdateProductResult
-                    message?: string
-                },
-                any
-            >({
+        updateProduct: (data: UpdateProductRequest, params: RequestParams = {}) =>
+            this.request<UpdateProductResponse, any>({
                 path: `/product`,
                 method: 'PUT',
                 body: data,
@@ -560,13 +528,7 @@ export class Api<SecurityDataType extends unknown> extends HttpClient<SecurityDa
          * @request GET:/product/{productId}
          */
         getProductById: (productId: string, params: RequestParams = {}) =>
-            this.request<
-                {
-                    result: GetProductByIdResult
-                    message?: string
-                },
-                any
-            >({
+            this.request<GetProductByIdResponse, any>({
                 path: `/product/${productId}`,
                 method: 'GET',
                 format: 'json',
@@ -582,13 +544,7 @@ export class Api<SecurityDataType extends unknown> extends HttpClient<SecurityDa
          * @request DELETE:/product/{productId}
          */
         deleteProduct: (productId: string, params: RequestParams = {}) =>
-            this.request<
-                {
-                    result: DeleteProductByIdResult
-                    message?: string
-                },
-                any
-            >({
+            this.request<DeleteProductByIdResponse, any>({
                 path: `/product/${productId}`,
                 method: 'DELETE',
                 format: 'json',
diff --git a/src/constants/systemConstants.ts b/src/constants/systemConstants.ts
index 1d7e1c2..3ce6d92 100644
--- a/src/constants/systemConstants.ts
+++ b/src/constants/systemConstants.ts
@@ -4,10 +4,12 @@ export const SYS_CONSTANTS: {
     JWT_COOKIE_KEY: string
     SALT_ROUNDS: number
     SWAGGER_ROUTE: string
+    SCHEMA_SYMBOL: symbol
 } = {
     NANOID_LENGTH: 12,
     DEFAULT_ENCODING: 'utf-8',
     JWT_COOKIE_KEY: 'jwt',
     SALT_ROUNDS: 10,
     SWAGGER_ROUTE: 'docs',
+    SCHEMA_SYMBOL: Symbol('Schema symbol'),
 }
diff --git a/src/handlers/auth/login/request.ts b/src/handlers/auth/login/request.ts
index 98acd7b..edc9e7b 100644
--- a/src/handlers/auth/login/request.ts
+++ b/src/handlers/auth/login/request.ts
@@ -1,13 +1,16 @@
 import { Static, Type } from '@sinclair/typebox'
 
 import { field } from '@/schemas/fields'
+import { handlerUtils } from '@/utils/handler'
 
-export const loginRequest = Type.Object(
-    {
-        userId: field.userId,
-        password: Type.String(),
-    },
-    { $id: 'loginRequest' },
+export const loginRequest = handlerUtils.buildRequestSchema(
+    Type.Object(
+        {
+            userId: field.userId,
+            password: Type.String(),
+        },
+        { $id: 'loginRequest' },
+    ),
 )
 
 export type LoginRequest = Static<typeof loginRequest>
diff --git a/src/handlers/auth/login/response.ts b/src/handlers/auth/login/response.ts
index 3b264af..856e68c 100644
--- a/src/handlers/auth/login/response.ts
+++ b/src/handlers/auth/login/response.ts
@@ -1,10 +1,10 @@
 import { Static, Type } from '@sinclair/typebox'
 
-import { createDefaultResponseSchema } from '@/handlers/base/defaultResponse'
+import { handlerUtils } from '@/utils/handler'
 
 export const loginResult = Type.Object({}, { $id: 'loginResult' })
 
-export const loginResponse = createDefaultResponseSchema(loginResult, 'loginResponse')
+export const loginResponse = handlerUtils.buildResponseSchema(loginResult, 'loginResponse')
 
 export type LoginResult = Static<typeof loginResult>
 
diff --git a/src/handlers/auth/login/schema.ts b/src/handlers/auth/login/schema.ts
index c48950d..0d2d948 100644
--- a/src/handlers/auth/login/schema.ts
+++ b/src/handlers/auth/login/schema.ts
@@ -17,6 +17,6 @@ export const loginSchema: FastifySchema = {
     description: description,
     body: Type.Ref(loginRequest),
     response: {
-        200: loginResponse,
+        200: Type.Ref(loginResponse),
     },
 }
diff --git a/src/handlers/auth/logout/response.ts b/src/handlers/auth/logout/response.ts
index 9705a54..2bce3a2 100644
--- a/src/handlers/auth/logout/response.ts
+++ b/src/handlers/auth/logout/response.ts
@@ -1,10 +1,10 @@
 import { Static, Type } from '@sinclair/typebox'
 
-import { createDefaultResponseSchema } from '@/handlers/base/defaultResponse'
+import { handlerUtils } from '@/utils/handler'
 
 export const logoutResult = Type.Object({}, { $id: 'logoutResult' })
 
-export const logoutResponse = createDefaultResponseSchema(logoutResult, 'logoutResponse')
+export const logoutResponse = handlerUtils.buildResponseSchema(logoutResult, 'logoutResponse')
 
 export type LogoutResult = Static<typeof logoutResult>
 
diff --git a/src/handlers/auth/logout/schema.ts b/src/handlers/auth/logout/schema.ts
index b177a39..f094a0c 100644
--- a/src/handlers/auth/logout/schema.ts
+++ b/src/handlers/auth/logout/schema.ts
@@ -1,3 +1,4 @@
+import { Type } from '@sinclair/typebox'
 import { FastifySchema } from 'fastify'
 
 import { logoutResponse } from './response'
@@ -14,6 +15,6 @@ export const logoutSchema: FastifySchema = {
     tags: ['Auth'],
     description: description,
     response: {
-        200: logoutResponse,
+        200: Type.Ref(logoutResponse),
     },
 }
diff --git a/src/handlers/base/defaultResponse.ts b/src/handlers/base/defaultResponse.ts
deleted file mode 100644
index a56d050..0000000
--- a/src/handlers/base/defaultResponse.ts
+++ /dev/null
@@ -1,18 +0,0 @@
-import { TObject, TRef, TSchema, Type } from '@sinclair/typebox'
-
-export const messageSchema = Type.Optional(Type.String())
-
-type DefaultResponse<T extends TSchema = TSchema> = TObject<{
-    result: TRef<T>
-    message: typeof messageSchema
-}>
-
-export const createDefaultResponseSchema = <T extends TSchema = TSchema>(resultSchema: T, $id: string): DefaultResponse<T> => {
-    return Type.Object(
-        {
-            result: Type.Ref(resultSchema),
-            message: messageSchema,
-        },
-        { $id: $id },
-    )
-}
diff --git a/src/handlers/product/createProduct/request.ts b/src/handlers/product/createProduct/request.ts
index b3d4436..a72ea9a 100644
--- a/src/handlers/product/createProduct/request.ts
+++ b/src/handlers/product/createProduct/request.ts
@@ -1,14 +1,17 @@
 import { Static, Type } from '@sinclair/typebox'
 
 import { field } from '@/schemas/fields'
+import { handlerUtils } from '@/utils/handler'
 
-export const createProductRequest = Type.Object(
-    {
-        productName: field.productName,
-        productDescription: field.productDescription,
-        productPrice: field.productPrice,
-    },
-    { $id: 'createProductRequest' },
+export const createProductRequest = handlerUtils.buildRequestSchema(
+    Type.Object(
+        {
+            productName: field.productName,
+            productDescription: field.productDescription,
+            productPrice: field.productPrice,
+        },
+        { $id: 'createProductRequest' },
+    ),
 )
 
 export type CreateProductRequest = Static<typeof createProductRequest>
diff --git a/src/handlers/product/createProduct/response.ts b/src/handlers/product/createProduct/response.ts
index 6ac3b68..c9abe5b 100644
--- a/src/handlers/product/createProduct/response.ts
+++ b/src/handlers/product/createProduct/response.ts
@@ -1,8 +1,9 @@
 import { Static, Type } from '@sinclair/typebox'
 
-import { createDefaultResponseSchema } from '@/handlers/base/defaultResponse'
 import { field } from '@/schemas/fields'
 
+import { handlerUtils } from './../../../utils/handler'
+
 export const createProductResult = Type.Object(
     {
         productId: field.productId,
@@ -13,7 +14,7 @@ export const createProductResult = Type.Object(
     { $id: 'createProductResult' },
 )
 
-export const createProductResponse = createDefaultResponseSchema(createProductResult, 'createProductResponse')
+export const createProductResponse = handlerUtils.buildResponseSchema(createProductResult, 'createProductResponse')
 
 export type CreateProductResult = Static<typeof createProductResult>
 
diff --git a/src/handlers/product/createProduct/schema.ts b/src/handlers/product/createProduct/schema.ts
index 0b80980..082c2c3 100644
--- a/src/handlers/product/createProduct/schema.ts
+++ b/src/handlers/product/createProduct/schema.ts
@@ -1,3 +1,4 @@
+import { Type } from '@sinclair/typebox'
 import { FastifySchema } from 'fastify'
 
 import { createProductRequest } from './request'
@@ -14,8 +15,8 @@ export const createProductSchema: FastifySchema = {
     summary: `create a new product`,
     tags: ['Product'],
     description: description,
-    body: createProductRequest,
+    body: Type.Ref(createProductRequest),
     response: {
-        201: createProductResponse,
+        201: Type.Ref(createProductResponse),
     },
 }
diff --git a/src/handlers/product/deleteProductById/parameter.ts b/src/handlers/product/deleteProductById/parameter.ts
index a7a6caa..d9fa6e0 100644
--- a/src/handlers/product/deleteProductById/parameter.ts
+++ b/src/handlers/product/deleteProductById/parameter.ts
@@ -1,12 +1,15 @@
 import { Static, Type } from '@sinclair/typebox'
 
 import { field } from '@/schemas/fields'
+import { handlerUtils } from '@/utils/handler'
 
-export const deleteProductByIdParams = Type.Object(
-    {
-        productId: field.productId,
-    },
-    { $id: 'deleteProductByIdParams' },
+export const deleteProductByIdParams = handlerUtils.buildParamSchema(
+    Type.Object(
+        {
+            productId: field.productId,
+        },
+        { $id: 'deleteProductByIdParams' },
+    ),
 )
 
 export type DeleteProductByIdParams = Static<typeof deleteProductByIdParams>
diff --git a/src/handlers/product/deleteProductById/response.ts b/src/handlers/product/deleteProductById/response.ts
index 1ac9a77..ed294c9 100644
--- a/src/handlers/product/deleteProductById/response.ts
+++ b/src/handlers/product/deleteProductById/response.ts
@@ -1,10 +1,10 @@
 import { Static, Type } from '@sinclair/typebox'
 
-import { createDefaultResponseSchema } from '@/handlers/base/defaultResponse'
+import { handlerUtils } from '@/utils/handler'
 
 export const deleteProductByIdResult = Type.Object({}, { $id: 'deleteProductByIdResult' })
 
-export const deleteProductByIdResponse = createDefaultResponseSchema(deleteProductByIdResult, 'deleteProductByIdResponse')
+export const deleteProductByIdResponse = handlerUtils.buildResponseSchema(deleteProductByIdResult, 'deleteProductByIdResponse')
 
 export type DeleteProductByIdResult = Static<typeof deleteProductByIdResult>
 export type DeleteProductByIdResponse = Static<typeof deleteProductByIdResponse>
diff --git a/src/handlers/product/deleteProductById/schema.ts b/src/handlers/product/deleteProductById/schema.ts
index d5572fd..93040bf 100644
--- a/src/handlers/product/deleteProductById/schema.ts
+++ b/src/handlers/product/deleteProductById/schema.ts
@@ -1,3 +1,4 @@
+import { Type } from '@sinclair/typebox'
 import { FastifySchema } from 'fastify'
 
 import { deleteProductByIdParams } from './parameter'
@@ -14,8 +15,8 @@ export const deleteProductByIdSchema: FastifySchema = {
     summary: `delete product by productId`,
     tags: ['Product'],
     description: description,
-    params: deleteProductByIdParams,
+    params: Type.Ref(deleteProductByIdParams),
     response: {
-        204: deleteProductByIdResponse,
+        204: Type.Ref(deleteProductByIdResponse),
     },
 }
diff --git a/src/handlers/product/getProductById/parameter.ts b/src/handlers/product/getProductById/parameter.ts
index 62d3106..a607979 100644
--- a/src/handlers/product/getProductById/parameter.ts
+++ b/src/handlers/product/getProductById/parameter.ts
@@ -1,12 +1,15 @@
 import { Static, Type } from '@sinclair/typebox'
 
 import { field } from '@/schemas/fields'
+import { handlerUtils } from '@/utils/handler'
 
-export const getProductByIdParams = Type.Object(
-    {
-        productId: field.productId,
-    },
-    { $id: 'getProductByIdParams' },
+export const getProductByIdParams = handlerUtils.buildParamSchema(
+    Type.Object(
+        {
+            productId: field.productId,
+        },
+        { $id: 'getProductByIdParams' },
+    ),
 )
 
 export type GetProductByIdParams = Static<typeof getProductByIdParams>
diff --git a/src/handlers/product/getProductById/response.ts b/src/handlers/product/getProductById/response.ts
index 5ab8cc7..9ab1ddc 100644
--- a/src/handlers/product/getProductById/response.ts
+++ b/src/handlers/product/getProductById/response.ts
@@ -1,7 +1,7 @@
 import { Static, Type } from '@sinclair/typebox'
 
-import { createDefaultResponseSchema } from '@/handlers/base/defaultResponse'
 import { field } from '@/schemas/fields'
+import { handlerUtils } from '@/utils/handler'
 
 export const getProductByIdResult = Type.Object(
     {
@@ -13,7 +13,7 @@ export const getProductByIdResult = Type.Object(
     { $id: 'getProductByIdResult' },
 )
 
-export const getProductByIdResponse = createDefaultResponseSchema(getProductByIdResult, 'getProductByIdResponse')
+export const getProductByIdResponse = handlerUtils.buildResponseSchema(getProductByIdResult, 'getProductByIdResponse')
 
 export type GetProductByIdResult = Static<typeof getProductByIdResult>
 
diff --git a/src/handlers/product/getProductById/schema.ts b/src/handlers/product/getProductById/schema.ts
index 06be76f..bf48c3f 100644
--- a/src/handlers/product/getProductById/schema.ts
+++ b/src/handlers/product/getProductById/schema.ts
@@ -1,3 +1,4 @@
+import { Type } from '@sinclair/typebox'
 import { FastifySchema } from 'fastify'
 
 import { getProductByIdParams } from './parameter'
@@ -14,8 +15,8 @@ export const getProductByIdSchema: FastifySchema = {
     summary: `get a product by productId`,
     tags: ['Product'],
     description: description,
-    params: getProductByIdParams,
+    params: Type.Ref(getProductByIdParams),
     response: {
-        200: getProductByIdResponse,
+        200: Type.Ref(getProductByIdResponse),
     },
 }
diff --git a/src/handlers/product/getProducts/query.ts b/src/handlers/product/getProducts/query.ts
index 9fbc64f..2365e2a 100644
--- a/src/handlers/product/getProducts/query.ts
+++ b/src/handlers/product/getProducts/query.ts
@@ -1,16 +1,19 @@
 import { Static, Type } from '@sinclair/typebox'
 
 import { field } from '@/schemas/fields'
+import { handlerUtils } from '@/utils/handler'
 
-export const getProductsQuery = Type.Object(
-    {
-        productId: Type.Optional(field.productId),
-        productName: Type.Optional(field.productName),
-        productDescription: Type.Optional(field.productDescription),
-        productPriceFrom: Type.Optional(field.productPrice),
-        productPriceTo: Type.Optional(field.productPrice),
-    },
-    { $id: 'getProductsQuery' },
+export const getProductsQuery = handlerUtils.buildQuerySchema(
+    Type.Object(
+        {
+            productId: Type.Optional(field.productId),
+            productName: Type.Optional(field.productName),
+            productDescription: Type.Optional(field.productDescription),
+            productPriceFrom: Type.Optional(field.productPrice),
+            productPriceTo: Type.Optional(field.productPrice),
+        },
+        { $id: 'getProductsQuery' },
+    ),
 )
 
 export type GetProductsQuery = Static<typeof getProductsQuery>
diff --git a/src/handlers/product/getProducts/response.ts b/src/handlers/product/getProducts/response.ts
index 2aafc70..06ca26b 100644
--- a/src/handlers/product/getProducts/response.ts
+++ b/src/handlers/product/getProducts/response.ts
@@ -1,7 +1,7 @@
 import { Static, Type } from '@sinclair/typebox'
 
-import { createDefaultResponseSchema } from '@/handlers/base/defaultResponse'
 import { field } from '@/schemas/fields'
+import { handlerUtils } from '@/utils/handler'
 
 export const getProductsResult = Type.Array(
     Type.Object({
@@ -13,7 +13,7 @@ export const getProductsResult = Type.Array(
     { $id: 'getProductsResult' },
 )
 
-export const getProductsResponse = createDefaultResponseSchema(getProductsResult, 'getProductsResponse')
+export const getProductsResponse = handlerUtils.buildResponseSchema(getProductsResult, 'getProductsResponse')
 
 export type GetProductsResult = Static<typeof getProductsResult>
 
diff --git a/src/handlers/product/getProducts/schema.ts b/src/handlers/product/getProducts/schema.ts
index dcbd3f1..e9c3ae9 100644
--- a/src/handlers/product/getProducts/schema.ts
+++ b/src/handlers/product/getProducts/schema.ts
@@ -1,3 +1,4 @@
+import { Type } from '@sinclair/typebox'
 import { FastifySchema } from 'fastify'
 
 import { getProductsQuery } from './query'
@@ -14,8 +15,8 @@ export const getProductsSchema: FastifySchema = {
     summary: `get products by filter`,
     tags: ['Product'],
     description: description,
-    querystring: getProductsQuery,
+    querystring: Type.Ref(getProductsQuery),
     response: {
-        200: getProductsResponse,
+        200: Type.Ref(getProductsResponse),
     },
 }
diff --git a/src/handlers/product/updateProduct/request.ts b/src/handlers/product/updateProduct/request.ts
index 8472463..c183438 100644
--- a/src/handlers/product/updateProduct/request.ts
+++ b/src/handlers/product/updateProduct/request.ts
@@ -1,15 +1,18 @@
 import { Static, Type } from '@sinclair/typebox'
 
 import { field } from '@/schemas/fields'
+import { handlerUtils } from '@/utils/handler'
 
-export const updateProductRequest = Type.Object(
-    {
-        productId: field.productId,
-        productName: field.productName,
-        productDescription: field.productDescription,
-        productPrice: field.productPrice,
-    },
-    { $id: 'updateProductRequest' },
+export const updateProductRequest = handlerUtils.buildRequestSchema(
+    Type.Object(
+        {
+            productId: field.productId,
+            productName: field.productName,
+            productDescription: field.productDescription,
+            productPrice: field.productPrice,
+        },
+        { $id: 'updateProductRequest' },
+    ),
 )
 
 export type UpdateProductRequest = Static<typeof updateProductRequest>
diff --git a/src/handlers/product/updateProduct/response.ts b/src/handlers/product/updateProduct/response.ts
index 297f20e..d487f2d 100644
--- a/src/handlers/product/updateProduct/response.ts
+++ b/src/handlers/product/updateProduct/response.ts
@@ -1,7 +1,7 @@
 import { Static, Type } from '@sinclair/typebox'
 
-import { createDefaultResponseSchema } from '@/handlers/base/defaultResponse'
 import { field } from '@/schemas/fields'
+import { handlerUtils } from '@/utils/handler'
 
 export const updateProductResult = Type.Object(
     {
@@ -13,7 +13,7 @@ export const updateProductResult = Type.Object(
     { $id: 'updateProductResult' },
 )
 
-export const updateProductResponse = createDefaultResponseSchema(updateProductResult, 'updateProductResponse')
+export const updateProductResponse = handlerUtils.buildResponseSchema(updateProductResult, 'updateProductResponse')
 
 export type UpdateProductResult = Static<typeof updateProductResult>
 
diff --git a/src/handlers/product/updateProduct/schema.ts b/src/handlers/product/updateProduct/schema.ts
index 1d9f05c..d748ac3 100644
--- a/src/handlers/product/updateProduct/schema.ts
+++ b/src/handlers/product/updateProduct/schema.ts
@@ -1,3 +1,4 @@
+import { Type } from '@sinclair/typebox'
 import { FastifySchema } from 'fastify'
 
 import { updateProductRequest } from './request'
@@ -14,8 +15,8 @@ export const updateProductSchema: FastifySchema = {
     summary: `update a product`,
     tags: ['Product'],
     description: description,
-    body: updateProductRequest,
+    body: Type.Ref(updateProductRequest),
     response: {
-        201: updateProductResponse,
+        201: Type.Ref(updateProductResponse),
     },
 }
diff --git a/src/plugins/swagger.ts b/src/plugins/swagger.ts
index 3c1c582..db0ae6b 100644
--- a/src/plugins/swagger.ts
+++ b/src/plugins/swagger.ts
@@ -68,7 +68,7 @@ const autoloadSchemas = function (path: string) {
     })
     const onlySchemaObj: { [key: string]: OpenAPIV3.SchemaObject } = {}
     for (const key in obj) {
-        if (key.endsWith('Params') || key.endsWith('Query') || key.endsWith('Request') || key.endsWith('Result') || key === 'responseMessage') {
+        if (Reflect.get(obj[key], SYS_CONSTANTS.SCHEMA_SYMBOL)) {
             onlySchemaObj[key] = obj[key] as OpenAPIV3.SchemaObject
         }
     }
diff --git a/src/utils/handler.ts b/src/utils/handler.ts
new file mode 100644
index 0000000..921e68b
--- /dev/null
+++ b/src/utils/handler.ts
@@ -0,0 +1,54 @@
+import { TObject, TRef, TSchema, Type } from '@sinclair/typebox'
+
+import { SYS_CONSTANTS } from '@/constants/systemConstants'
+
+const messageSchema = Type.Optional(Type.String())
+
+const buildParamSchema = <T extends TSchema = TSchema>(requestSchema: T): T => {
+    if (!requestSchema.$id) {
+        throw new Error('Missing schema $id property')
+    }
+    Reflect.defineProperty(requestSchema, SYS_CONSTANTS.SCHEMA_SYMBOL, { value: true })
+    return requestSchema
+}
+
+const buildQuerySchema = <T extends TSchema = TSchema>(requestSchema: T): T => {
+    if (!requestSchema.$id) {
+        throw new Error('Missing schema $id property')
+    }
+    Reflect.defineProperty(requestSchema, SYS_CONSTANTS.SCHEMA_SYMBOL, { value: true })
+    return requestSchema
+}
+
+const buildRequestSchema = <T extends TSchema = TSchema>(requestSchema: T): T => {
+    if (!requestSchema.$id) {
+        throw new Error('Missing schema $id property')
+    }
+    Reflect.defineProperty(requestSchema, SYS_CONSTANTS.SCHEMA_SYMBOL, { value: true })
+    return requestSchema
+}
+
+type DefaultResponse<T extends TSchema = TSchema> = TObject<{
+    result: TRef<T>
+    message: typeof messageSchema
+}>
+
+const buildResponseSchema = <T extends TSchema = TSchema>(resultSchema: T, $id: string): DefaultResponse<T> => {
+    Reflect.defineProperty(resultSchema, SYS_CONSTANTS.SCHEMA_SYMBOL, { value: true })
+    const responseSchema = Type.Object(
+        {
+            result: Type.Ref(resultSchema),
+            message: messageSchema,
+        },
+        { $id: $id },
+    )
+    Reflect.defineProperty(responseSchema, SYS_CONSTANTS.SCHEMA_SYMBOL, { value: true })
+    return responseSchema
+}
+
+export const handlerUtils = {
+    buildParamSchema,
+    buildQuerySchema,
+    buildRequestSchema,
+    buildResponseSchema,
+}