diff --git a/utils/src/keiyoushi/utils/Json.kt b/utils/src/keiyoushi/utils/Json.kt
index cc0a98644..7501d3e2b 100644
--- a/utils/src/keiyoushi/utils/Json.kt
+++ b/utils/src/keiyoushi/utils/Json.kt
@@ -1,6 +1,7 @@
 package keiyoushi.utils
 
 import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.decodeFromStream
 import okhttp3.Response
@@ -19,3 +20,9 @@ inline fun <reified T> String.parseAs(json: Json = jsonInstance): T =
  */
 inline fun <reified T> Response.parseAs(json: Json = jsonInstance): T =
     json.decodeFromStream(body.byteStream())
+
+/**
+ * Serializes the object to a JSON String.
+ */
+inline fun <reified T> T.toJsonString(json: Json = jsonInstance): String =
+    json.encodeToString(this)