diff --git a/flomo-ai/app/src/main/java/com/example/flomo_ai/MainActivity.kt b/flomo-ai/app/src/main/java/com/example/flomo_ai/MainActivity.kt
index d16e5ef..89b797b 100644
--- a/flomo-ai/app/src/main/java/com/example/flomo_ai/MainActivity.kt
+++ b/flomo-ai/app/src/main/java/com/example/flomo_ai/MainActivity.kt
@@ -160,10 +160,15 @@ class MainActivity : AppCompatActivity() {
                         }
                         
                         val client = OkHttpClient()
-                        val request = Request.Builder()
+                        val requestBuilder = Request.Builder()
                             .url("$baseUrl/chat/completions")
                             .addHeader("Content-Type", "application/json")
-                            .addHeader("Authorization", "Bearer $apiKey")
+                        
+                        if (apiKey.isNotBlank()) {
+                            requestBuilder.addHeader("Authorization", "Bearer $apiKey")
+                        }
+                        
+                        val request = requestBuilder
                             .post(requestBody.toString().toRequestBody("application/json".toMediaType()))
                             .build()