diff --git a/src/types/api/auth.ts b/src/types/api/auth.ts
new file mode 100644
index 00000000..b158f06a
--- /dev/null
+++ b/src/types/api/auth.ts
@@ -0,0 +1,9 @@
+export type SignInRequest = {
+  serial_id: string;
+  password: string;
+}
+
+export type SignInResponse = {
+  access_token: string;
+  refresh_token: string;
+}
\ No newline at end of file