diff --git a/src/lib.rs b/src/lib.rs
index 9bcb82e..40329f2 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,8 @@
+/// Toolset to interact with LLM chat model in Qianfan platform
 pub mod chat;
+/// Toolset to interact with embedding model in Qianfan platform
 pub mod embedding;
 pub mod errors;
+/// Toolset to interact with text2image model in Qianfan platform
 pub mod text2image;
 pub mod utils;