diff --git a/README.md b/README.md
index 7d6de47..3791780 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,30 @@
-Prepare an environment for running Embulk
-==========================================
+Gradle plugin to set up an environment for running Embulk
+==========================================================
+
+It'd be an alternative of `embulk mkbundle` so that users could maintain their Maven-based Embulk plugin installations.
+
+Note that everything (including syntax, behavior, and else) can change drastically in later versions. This is yet work-in-progress.
+
+Usage
+------
+
+Set up Gradle 8.4 or later (often with [the Gradle wrapper](https://docs.gradle.org/current/userguide/gradle_wrapper.html)), and prepare `build.gradle` like below.
+
+```
+plugins {
+    id "org.embulk.runset" version "0.1.0"  // Just apply this Gradle plugin.
+}
+
+repositories {
+    mavenCentral()
+}
+
+installEmbulkRunSet {
+    into "path/to/embulk-home"  // Set your Embulk home directory to install the Embulk plugins.
+
+    artifact "org.embulk:embulk-input-postgresql:0.13.2"
+    artifact group: "org.embulk", name: "embulk-input-s3", version: "0.6.0"
+}
+```
+
+Then run `./gradlew installEmbulkRunSet`.