diff --git a/.gitmodules b/.gitmodules
index f4c48de4f..08e063365 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "packages/agent-native"]
 	path = packages/agent-native
 	url = https://github.com/ZSeven-W/agent.git
+[submodule "vendor/agent"]
+	path = vendor/agent
+	url = https://github.com/ZSeven-W/agent-rs.git
diff --git a/README.md b/README.md
index 23138502b..f39c3de5e 100644
--- a/README.md
+++ b/README.md
@@ -153,6 +153,16 @@ scoop install openpencil
 npm install -g @zseven-w/openpencil
 ```
 
+## Cloning（含 Rust 子系统）
+
+```bash
+git clone --recurse-submodules https://github.com/ZSeven-W/openpencil.git
+# Or already cloned:
+git submodule update --init --recursive
+```
+
+`vendor/agent` is the `agent-rs` submodule (cross-product, OP + Zode share); HTTPS URL needs no SSH key.
+
 ## Quick Start (Development)
 
 ```bash
diff --git a/vendor/agent b/vendor/agent
new file mode 160000
index 000000000..65b845585
--- /dev/null
+++ b/vendor/agent
@@ -0,0 +1 @@
+Subproject commit 65b845585afa68fbd3bff09771b77e8668154062