Fix Gradio API to accept JSON directly for backend compatibility

app.py

@@ -47,18 +47,11 @@ def predict_single_text(text):
     embedding = get_embedding(text.strip())
     return f"Embedding (first 10 values): {embedding[:10]}...\nFull embedding has {len(embedding)} dimensions."
 
-def predict_api(json_str):
-    """Handle API calls from backend - expects JSON string with {"data": ["text1", "text2", ...]}"""
+def predict_api(texts):
+    """Handle API calls from backend - expects list of texts directly"""
     try:
-        import json
-        data = json.loads(json_str)
-
-        if not data or 'data' not in data:
-            return json.dumps({'error': 'Missing data field'})
-
-        texts = data['data']
         if not isinstance(texts, list):
-            return json.dumps({'error': 'Data must be a list of texts'})
+            return {'error': 'Input must be a list of texts'}
 
         # Generate embeddings for each text
         embeddings = []
@@ -67,17 +60,17 @@ def predict_api(json_str):
                 embedding = get_embedding(text)
                 embeddings.append(embedding)
             else:
-                return json.dumps({'error': 'All items must be strings'})
+                return {'error': 'All items must be strings'}
 
-        return json.dumps({'data': embeddings})
+        return {'data': embeddings}
     except Exception as e:
-        return json.dumps({'error': str(e)})
+        return {'error': str(e)}
 
 # Create API interface (this will create /api/predict endpoint)
 api_interface = gr.Interface(
     fn=predict_api,
-    inputs=gr.Textbox(),
-    outputs=gr.Textbox(),
+    inputs=gr.JSON(),  # Expects JSON input directly
+    outputs=gr.JSON(), # Returns JSON output directly
     api_name="predict"
 )