diff --git a/pipelines/examples/mlx_pipeline.py b/pipelines/examples/mlx_pipeline.py
index 09b2ace..85b7b30 100644
--- a/pipelines/examples/mlx_pipeline.py
+++ b/pipelines/examples/mlx_pipeline.py
@@ -65,10 +65,18 @@ class Pipeline:
         url = f"http://{self.host}:{self.port}/v1/chat/completions"
         headers = {"Content-Type": "application/json"}
 
-        # Extract parameters from the request body
+        # Extract and validate parameters from the request body
         max_tokens = body.get("max_tokens", 1024)
+        if not isinstance(max_tokens, int) or max_tokens < 0:
+            max_tokens = 1024  # Default to 1024 if invalid
+
         temperature = body.get("temperature", 0.8)
+        if not isinstance(temperature, (int, float)) or temperature < 0:
+            temperature = 0.8  # Default to 0.8 if invalid
+
         repeat_penalty = body.get("repeat_penalty", 1.0)
+        if not isinstance(repeat_penalty, (int, float)) or repeat_penalty < 0:
+            repeat_penalty = 1.0  # Default to 1.0 if invalid
 
         payload = {
             "messages": messages,