diff --git a/README.md b/README.md
index ec9faae..23d5ecf 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,8 @@
 ## @cosense/types
 
+[![JSR](https://jsr.io/badges/@cosense/types)](https://jsr.io/@cosense/types)
+[![test](https://github.com/scrapbox-jp/types/workflows/ci/badge.svg)](https://github.com/scrapbox-jp/types/actions?query=workflow%3Aci)
+
 Type definitions for [cosense](https://cosen.se)
 
 ## Getting Started
diff --git a/mod.ts b/mod.ts
deleted file mode 100644
index 8d9b8a2..0000000
--- a/mod.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-export function add(a: number, b: number): number {
-  return a + b;
-}
diff --git a/rest.ts b/rest.ts
index 5f1dc3b..6049fd3 100644
--- a/rest.ts
+++ b/rest.ts
@@ -1,4 +1,7 @@
-/** @module types used at REST API */
+/**  type definitions for Cosense REST API responses
+ *
+ * @module
+ */
 
 export * from "./base.ts";
 export * from "./commit.ts";
diff --git a/userscript.ts b/userscript.ts
index db8b670..ddc516c 100644
--- a/userscript.ts
+++ b/userscript.ts
@@ -1,5 +1,7 @@
-/** @module types used at UserScript */
-
+/**  type definitions for Cosense UserScript
+ *
+ * @module
+ */
 export * from "./base.ts";
 export * from "./blocks.ts";
 export * from "./node/node.ts";