diff --git a/CLI/cmux.swift b/CLI/cmux.swift
index 17279ef6..a0120002 100644
--- a/CLI/cmux.swift
+++ b/CLI/cmux.swift
@@ -8565,6 +8565,9 @@ struct CMUXCLI {
         if (surface["here"] as? Bool) == true {
             parts.append("◀ here")
         }
+        if let tty = surface["tty"] as? String, !tty.isEmpty {
+            parts.append("tty=\(tty)")
+        }
         if surfaceType.lowercased() == "browser",
            let url = surface["url"] as? String,
            !url.isEmpty {
diff --git a/Sources/TerminalController.swift b/Sources/TerminalController.swift
index c6509f46..0aa4f56b 100644
--- a/Sources/TerminalController.swift
+++ b/Sources/TerminalController.swift
@@ -2849,7 +2849,8 @@ class TerminalController {
                 "selected_in_pane": v2OrNull(selectedInPaneByPanelId[panel.id]),
                 "pane_id": v2OrNull(paneUUID?.uuidString),
                 "pane_ref": v2Ref(kind: .pane, uuid: paneUUID),
-                "index_in_pane": v2OrNull(indexInPaneByPanelId[panel.id])
+                "index_in_pane": v2OrNull(indexInPaneByPanelId[panel.id]),
+                "tty": v2OrNull(workspace.surfaceTTYNames[panel.id])
             ]
 
             if panel.panelType == .browser, let browserPanel = panel as? BrowserPanel {