diff --git a/api-doc.yaml b/api-doc.yaml
index d1c94c7..d279d7b 100644
--- a/api-doc.yaml
+++ b/api-doc.yaml
@@ -3,26 +3,96 @@ openapi: 3.0.0
 info:
   version: 0.0.1
   title: Mocked Service
-  description: Service for creating your own mocked enpoints
+  description: Service for creating your own mocked endpoints
 
 tags:
   - name: "MockedMessage"
   - name: "MessageHistory"
 
 paths:
-  /:
+  /mock/json/{uuid}:
     get:
-      summary: Returns homepage
       tags:
         - "MockedMessage"
-      description: Returns html file
-      operationId: showHome
+      description: Generates new uuid and default message
+      parameters:
+        - in: path
+          name: uuid
+          required: true
+          description: If not given, server will create and return new one
+          schema:
+            type: string
+            example: '9bfddcc1-ef89-4c53-84e8-c88f13ecc7ec'
       responses:
-        "200":
-          description: Html file received
+        '200':
+          description: Message list sent
           content:
-            text/html:
+            application/json:
               schema:
-                type: document
-                items:
-                  $ref: "/resources/static/html/mock.html"
\ No newline at end of file
+                $ref: '#/components/schemas/MockedMessage'
+
+  /mock/json:
+    get:
+      tags:
+        - "MockedMessage"
+      description: Generates new uuid and default message
+      responses:
+        '200':
+          description: Message list sent
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/MockedMessage'
+
+    post:
+      tags:
+        - "MockedMessage"
+      description: creates new message in the list
+      responses:
+        '200':
+          description: message has been created
+
+
+    put:
+      tags:
+        - "MockedMessage"
+      description: Adds new item or modifies existing
+
+      requestBody:
+        required: true
+        description: json format describing MockedMessage object
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/MockedMessage'
+      responses:
+        '200':
+          description: message has been updated
+
+
+components:
+  schemas:
+
+    MockedMessage:
+      description: Model containing data about created response
+      properties:
+        mockedResponseId:
+          type: integer
+          example: 1
+        clientUUID:
+          type: string
+          example: '9bfddcc1-ef89-4c53-84e8-c88f13ecc7ec'
+        mediaType:
+          type: string
+          example: 'application/xml'
+        messageBody:
+          type: string
+          example: '<root><element>Hello World</element></root>'
+        httpStatus:
+          type: integer
+          example: 200
+        httpHeaders:
+          type: object
+          additionalProperties:
+            type: string
+