diff --git a/docs/monitor/default-interface.md b/docs/monitor/default-interface.md
index 4c93d36b3d..ad0641d5b2 100644
--- a/docs/monitor/default-interface.md
+++ b/docs/monitor/default-interface.md
@@ -50,6 +50,25 @@ Each configured component and service appears as a card. What you can do depends
 
 You can switch between machine parts directly from the CONTROL tab using the part selector at the top.
 
+### Code sandbox
+
+The CONTROL tab includes a TypeScript code sandbox.
+Click **Sandbox** in the sidebar under **Code** to open it.
+
+The sandbox editor is pre-filled with a starter program based on the machine's configured resources.
+You can edit the code, run it, and see output in the console below the editor.
+The sandbox runs against your live machine using the page's existing connection, so you do not need to supply an API key or address.
+
+Use the sandbox to:
+
+- Test SDK calls interactively before writing a full application
+- Experiment with component and service methods on a live machine
+- Prototype a sequence of commands without setting up a local development environment
+
+Programs are not persisted.
+Navigating away from the sandbox discards your code.
+Use the download button to save your program as a file before leaving.
+
 ## Viam mobile app
 
 The Viam mobile app provides similar access from your phone:
diff --git a/docs/monitor/overview.md b/docs/monitor/overview.md
index e15bfcb023..acde382524 100644
--- a/docs/monitor/overview.md
+++ b/docs/monitor/overview.md
@@ -44,7 +44,7 @@ See [Set up alerts](/monitor/alert/).
 
 You can remotely control and test any configured machine without writing code.
 
-The **default control interface** is the CONTROL tab on your machine's page in the Viam app. It provides a control card for every configured component and service: move bases, actuate arms and grippers, read sensors, view camera feeds, and test vision services. The Viam mobile app provides similar access from your phone.
+The **default control interface** is the CONTROL tab on your machine's page in the Viam app. It provides a control card for every configured component and service: move bases, actuate arms and grippers, read sensors, view camera feeds, and test vision services. A built-in code sandbox lets you write and run TypeScript against the live machine directly from the browser. The Viam mobile app provides similar access from your phone.
 
 **Teleop workspaces** let you build custom operator interfaces with only the widgets you need for a specific task. You choose the widgets (camera feeds, sensor readouts, actuation controls, GPS maps) and arrange them into a focused view. This is useful when the full CONTROL tab shows more than the operator needs.