diff --git a/api.py b/api.py
index 693c70a..efc28bc 100644
--- a/api.py
+++ b/api.py
@@ -1,7 +1,11 @@
-from fastapi import FastAPI, Request
-from transformers import AutoTokenizer, AutoModel
-import uvicorn, json, datetime
+import datetime
+import json
+
 import torch
+import uvicorn
+from fastapi import FastAPI, Request
+from pydantic import BaseModel
+from transformers import AutoModel, AutoTokenizer
 
 DEVICE = "cuda"
 DEVICE_ID = "0"
@@ -17,6 +21,18 @@ def torch_gc():
 
 app = FastAPI()
 
+class Item(BaseModel):
+    prompt: str
+    history: list[tuple[str, str]] = [[]]
+    max_length: int = 2048
+    top_p: float = 0.7
+    temperature: float = 0.95 
+
+class Answer(BaseModel):
+    response: str
+    history: list[tuple[str, str]]
+    status: int
+    time: str
 
 @app.post("/")
 async def create_item(request: Request):