diff --git a/README.md b/README.md
index ed020c6..e679d1e 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,9 @@
-создать виртуальное окружение 
-""python3 -m venv .venv"""
-подключиться к виртуальному окружению
-""".\.venv\Scripts\activate"""
-Загрузить библиотеки с файла requirements.txt
-"""pip install -r requirements.txt"""
-в файле .env.template заменить на ваши данные и сохранить в .env
-Запустить приложение
-"""main.py"""
\ No newline at end of file
+создать виртуальное окружение \
+```python3 -m venv .venv``` \
+подключиться к виртуальному окружению \
+```.\.venv\Scripts\activate``` \
+Загрузить библиотеки с файла `requirements.txt` \
+```pip install -r requirements.txt``` \
+в файле `.env.template` заменить на ваши данные и сохранить в `.env` \
+Запустить приложение \
+```main.py```
\ No newline at end of file
diff --git a/main.py b/main.py
index 620e301..e2d7642 100644
--- a/main.py
+++ b/main.py
@@ -1,4 +1,4 @@
-from fastapi import FastAPI, APIRouter, Request
+from fastapi import FastAPI, APIRouter, Request, HTTPException
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.responses import ORJSONResponse, HTMLResponse
 from sqlmodel import create_engine, Field, SQLModel, UUID, DateTime, func, Column, text, bindparam
@@ -72,31 +72,33 @@ async def get_ageement(id_account: Optional[UUID] = None) -> Sequence[Agreement]
 
 @router.delete("/")
 async def delete_pk(acc_list: Sequence[UUID]):
-    with db_engine.begin() as con:
-        stmt = text("DELETE agreement WHERE id_account IN :acc_list")
-        params = {"acc_list":acc_list}
-        stmt = stmt.bindparams(bindparam('acc_list', expanding=True))
-        con.execute(stmt, params)
-        return {"msg":"has deleted"}
-
+    if acc_list:
+        with db_engine.begin() as con:
+            stmt = text("DELETE agreement WHERE id_account IN :acc_list")
+            params = {"acc_list":acc_list}
+            stmt = stmt.bindparams(bindparam('acc_list', expanding=True))
+            con.execute(stmt, params)
+            return {"msg":"has deleted"}
+    raise HTTPException(405,"list is empty")
 
 @router.post("/")
 async def add_agreement(agrees: Sequence[AgreementCreate]):
-    with db_engine.begin() as con:
-        dict_list=[]
-        acc_list = []
-        for agree in agrees:
-            agree_dict = agree.model_dump()
-            dict_list.append(agree_dict)
-            acc_id = agree_dict.get("id_account")
-            if acc_id not in acc_list:
-                acc_list.append(acc_id)
-        await delete_pk(acc_list)
-        stmt = insert(Agreement).values(dict_list)
-        con.execute(stmt)
-        con.commit()
-        return {"msg": "added succesfully"}
-
+    if acc_list:
+        with db_engine.begin() as con:
+            dict_list=[]
+            acc_list = []
+            for agree in agrees:
+                agree_dict = agree.model_dump()
+                dict_list.append(agree_dict)
+                acc_id = agree_dict.get("id_account")
+                if acc_id not in acc_list:
+                    acc_list.append(acc_id)
+            await delete_pk(acc_list)
+            stmt = insert(Agreement).values(dict_list)
+            con.execute(stmt)
+            con.commit()
+            return {"msg": "added succesfully"}
+    raise HTTPException(405,"list is empty")
 app.include_router(router)
 
 if __name__ == "__main__":