diff --git a/api/pyproject.toml b/api/pyproject.toml
index 07a03f6..ca61e59 100644
--- a/api/pyproject.toml
+++ b/api/pyproject.toml
@@ -7,6 +7,7 @@ authors = [
 ]
 dependencies = [
     "fastapi[standard]>=0.115.7",
+    "pydantic>=2.10.5",
 ]
 readme = "README.md"
 requires-python = ">= 3.12"
diff --git a/api/src/__init__.py b/api/src/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/api/src/api/__init__.py b/api/src/api/__init__.py
new file mode 100644
index 0000000..533cc6c
--- /dev/null
+++ b/api/src/api/__init__.py
@@ -0,0 +1 @@
+from .check_imei import checking_router as checking_router
\ No newline at end of file
diff --git a/api/src/api/check_imei.py b/api/src/api/check_imei.py
new file mode 100644
index 0000000..64effb1
--- /dev/null
+++ b/api/src/api/check_imei.py
@@ -0,0 +1,15 @@
+from fastapi import APIRouter, status
+
+from src.schemas import CheckingInput, CheckingOutput
+
+
+checking_router = APIRouter()
+
+
+@checking_router.post(
+    "/check-imei",
+    status_code=status.HTTP_200_OK,
+    response_model=CheckingOutput
+)
+async def check_imei(body: CheckingInput):
+    return CheckingOutput(result="OK")
diff --git a/api/src/app.py b/api/src/app.py
index b1c50b4..9c3519e 100644
--- a/api/src/app.py
+++ b/api/src/app.py
@@ -1,6 +1,8 @@
 from fastapi import APIRouter, FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 
+from src.api import checking_router
+
 app = FastAPI(
     title="hatiko-api",
 )
@@ -14,6 +16,9 @@ app.add_middleware(
 
 main_app_router = APIRouter(prefix="/api")
 
-app.include_router(main_app_router)
+main_app_router.include_router(checking_router, tags=["Check IMEI"])
+
+
+app.include_router(checking_router)
 
 
diff --git a/api/src/schemas/__init__.py b/api/src/schemas/__init__.py
new file mode 100644
index 0000000..c85d1d9
--- /dev/null
+++ b/api/src/schemas/__init__.py
@@ -0,0 +1,2 @@
+from .checking import CheckingInput as CheckingInput
+from .checking import CheckingOutput as CheckingOutput
\ No newline at end of file
diff --git a/api/src/schemas/checking.py b/api/src/schemas/checking.py
new file mode 100644
index 0000000..4d7c490
--- /dev/null
+++ b/api/src/schemas/checking.py
@@ -0,0 +1,14 @@
+from typing import Any
+from pydantic import BaseModel, ConfigDict
+
+class CheckingOutput(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+
+    result: Any
+
+
+class CheckingInput(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+
+    imei: str
+    token: str