From 687530713825e0d6d00beeae45a4c7c6e8c4e9e3 Mon Sep 17 00:00:00 2001
From: hadashiA <dev@hadashikick.jp>
Date: Mon, 23 Sep 2024 10:37:03 +0900
Subject: [PATCH] update readme

---
 README.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/README.md b/README.md
index 7324b57..0a521ec 100644
--- a/README.md
+++ b/README.md
@@ -1223,6 +1223,11 @@ MRubyContext.GlobalLogHandler = message =>
 
 ### Ruby API
 
+The mruby embedded with VitalRouter contains only a portion of the standard library to reduce size.
+Please check the [vitalrouter.gembox](https://github.com/hadashiA/VitalRouter/blob/main/src/vitalrouter-mruby/vitalrouter.gembox) to see which mrbgem is enabled.
+
+In addition to the standard mrbgem, the following extension APIs are provided for Unity integration.
+
 ```ruby
 # Wait for the number of seconds. (Non-blocking)
 # It is equivalent to `await UniTask.Delay(TimeSpan.FromSeconds(1))`)