diff --git a/crates/hearthspace-shell/src/app_catalog.rs b/crates/hearthspace-shell/src/app_catalog.rs
index e537bf7..97ba34f 100644
--- a/crates/hearthspace-shell/src/app_catalog.rs
+++ b/crates/hearthspace-shell/src/app_catalog.rs
@@ -604,6 +604,7 @@ fn session_environment_keys() -> &'static [&'static str] {
     &[
         "XDG_CURRENT_DESKTOP",
         "DESKTOP_SESSION",
+        hearthspace_common::SHELL_COMMAND_SOCKET_ENV,
         hearthspace_common::SETTINGS_SOCKET_ENV,
         hearthspace_common::SESSION_SOCKET_ENV,
         hearthspace_common::REPO_ROOT_ENV,
@@ -941,4 +942,9 @@ mod tests {
             vec!["/repo/scripts/dev-run-app", "hearthspace-settings"]
         );
     }
+
+    #[test]
+    fn launched_apps_receive_compositor_command_socket_env() {
+        assert!(session_environment_keys().contains(&hearthspace_common::SHELL_COMMAND_SOCKET_ENV));
+    }
 }