add api specification

api.md

@@ -0,0 +1,48 @@
+# Api specification 
+
+
+
+## Review
+
+### Review model
+
+```ts
+{
+    id: number,
+    location: string,
+    title: string,
+    content: string,
+    stars: number
+}
+```
+
+### GET reviews
+
+#### Response 
+
+```ts
+{
+    Review[]
+}
+```
+
+### Post createReview
+
+#### Request
+
+```ts
+{
+    location: string,
+    title: string,
+    content: string,
+    stars: number
+}
+```
+
+#### Response
+
+```ts
+{
+    message: "Ok" | "Invalid request"
+}
+```