diff --git a/api.yaml b/api.yaml
index 89152f3..ba8c9f1 100644
--- a/api.yaml
+++ b/api.yaml
@@ -6,6 +6,33 @@ info:
 servers:
   - url: 'http://localhost:8080'
 paths:
+  /api/login:
+    post:
+      summary: Login to an author account
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: object
+              properties:
+                username:
+                  type: string
+                  description: Username of the user / author which logs in
+                password:
+                  type: string
+                  description: Password of the user
+      responses:
+        200:
+          description: Logged in
+          headers:
+            Set-Cookie:
+              schema:
+                type: string
+                description: The session_id cookie to authenticate
+        401:
+          description: Login failed
+
   /api/recent:
     get:
       summary: Get recent articles