diff --git a/src/blackbox/audio_to_text.py b/src/blackbox/audio_to_text.py
index b87029f..c889f01 100644
--- a/src/blackbox/audio_to_text.py
+++ b/src/blackbox/audio_to_text.py
@@ -28,7 +28,7 @@ class AudioToText(Blackbox):
             return text
 
     async def fast_api_handler(self, request) -> Response:
-        data = (await request.form()).get("data")
+        data = (await request.form()).get("audio")
         if data is None:
             return JSONResponse(content={"error": "data is required"}, status_code=status.HTTP_400_BAD_REQUEST)
         d = await data.read()
diff --git a/swagger.yml b/swagger.yml
new file mode 100644
index 0000000..a6ffc62
--- /dev/null
+++ b/swagger.yml
@@ -0,0 +1,75 @@
+openapi: 3.0.3
+info:
+  title: Jarvis models APIs
+  description: |-
+    boardware
+  contact:
+    email: chenyunda218@gmail.com
+  version: 0.0.1
+servers:
+  - url: http://localhost:8080
+    description: Local server
+tags:
+  - name: Blackbox
+paths:
+  /?blackbox={blackbox_name}:
+    post:
+      tags:
+        - Blackbox
+      summary: "Create Blackbox"
+      parameters:
+        - name: blackbox_name
+          in: query
+          required: true
+          schema:
+            $ref: "#/components/schemas/BlackboxName"
+          description: "Blackbox name"
+      requestBody:
+        content:
+          multipart/form-data:
+            schema:
+              $ref: "#/components/schemas/Input"
+          application/json:
+            schema:
+              $ref: "#/components/schemas/Input"
+      responses:
+        "200":
+          description: "Success"
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Result"
+
+components:
+  schemas:
+    TextToAudioInput:
+      type: object
+      properties:
+        text:
+          type: string
+          description: "Text to convert to audio"
+    AudioToTextInput:
+      type: object
+      properties:
+        audio:
+          type: string
+          format: binary
+    Input:
+      oneOf:
+        - $ref: "#/components/schemas/TextToAudioInput"
+        - $ref: "#/components/schemas/AudioToTextInput"
+    TextResult:
+      type: object
+      properties:
+        text:
+          type: string
+          description: "Result of processing"
+    Result:
+      oneOf:
+        - $ref: "#/components/schemas/TextResult"
+    BlackboxName:
+      type: string
+      description: "Blackbox name"
+      enum:
+        - "text_to_audio"
+        - "audio_to_text"