diff --git a/app/src/main/java/dev/kaizen/app/net/KaizenApi.kt b/app/src/main/java/dev/kaizen/app/net/KaizenApi.kt
index 5968231..8fb1cf3 100644
--- a/app/src/main/java/dev/kaizen/app/net/KaizenApi.kt
+++ b/app/src/main/java/dev/kaizen/app/net/KaizenApi.kt
@@ -138,7 +138,7 @@ object KaizenApi {
         .readTimeout(0, TimeUnit.SECONDS) // streaming chat — never time out a healthy stream
         .build()
 
-    private val json = Json { ignoreUnknownKeys = true }
+    private val json = Json { ignoreUnknownKeys = true; encodeDefaults = true }
     private val jsonMedia = "application/json".toMediaType()
 
     /** POST /api/v1/auth/token — exchange email+password for a `kzn_` bearer token. */