diff --git a/elisp/private/tools/compile.el b/elisp/private/tools/compile.el
index 1e89f4f3..4f959313 100644
--- a/elisp/private/tools/compile.el
+++ b/elisp/private/tools/compile.el
@@ -1,6 +1,6 @@
 ;;; compile.el --- byte-compile Emacs Lisp files     -*- lexical-binding: t; -*-
 
-;; Copyright 2020-2025 Google LLC
+;; Copyright 2020-2026 Google LLC
 ;;
 ;; Licensed under the Apache License, Version 2.0 (the "License");
 ;; you may not use this file except in compliance with the License.
@@ -36,7 +36,8 @@
 ;; Leaving these enabled leads to undefined behavior and doesn’t make sense in
 ;; batch mode.
 (setq attempt-stack-overflow-recovery nil
-      attempt-orderly-shutdown-on-fatal-signal nil)
+      attempt-orderly-shutdown-on-fatal-signal nil
+      inhibit-interaction t)
 
 ;; Ensure filenames in the output are relative to the current directory.
 (setq byte-compile-root-dir
diff --git a/elisp/private/tools/export-org.el b/elisp/private/tools/export-org.el
index c8042ccd..18f2f7e1 100644
--- a/elisp/private/tools/export-org.el
+++ b/elisp/private/tools/export-org.el
@@ -1,6 +1,6 @@
 ;;; export-org.el --- export Org-mode file to Texinfo manual  -*- lexical-binding: t; -*-
 
-;; Copyright 2021-2025 Google LLC
+;; Copyright 2021-2026 Google LLC
 ;;
 ;; Licensed under the Apache License, Version 2.0 (the "License");
 ;; you may not use this file except in compliance with the License.
@@ -45,6 +45,7 @@
         (after-insert-file-functions nil)
         (write-region-annotate-functions nil)
         (write-region-post-annotation-function nil)
+        (inhibit-interaction t)
         (org-export-coding-system 'utf-8-unix)
         (org-export-time-stamp-file nil)
         (org-export-use-babel nil))
diff --git a/elisp/private/tools/gen-proto.el b/elisp/private/tools/gen-proto.el
index 81dc9b7e..d2438a7d 100644
--- a/elisp/private/tools/gen-proto.el
+++ b/elisp/private/tools/gen-proto.el
@@ -170,6 +170,7 @@ enumeration type, and VALUES is a list of (NAME NUMBER) pairs."
 (set-binary-mode 'stdin :binary)
 (set-binary-mode 'stdout :binary)
 (let* ((standard-output #'external-debugging-output)
+       (inhibit-interaction t)
        (inhibit-modification-hooks t)
        (stdin (with-temp-buffer
                 (set-buffer-multibyte nil)
diff --git a/elisp/private/tools/run-tst.el b/elisp/private/tools/run-tst.el
index 863b9441..0ec39b4c 100644
--- a/elisp/private/tools/run-tst.el
+++ b/elisp/private/tools/run-tst.el
@@ -944,6 +944,7 @@ exact copies as equal."
 
 (setq attempt-stack-overflow-recovery nil
       attempt-orderly-shutdown-on-fatal-signal nil
+      inhibit-interaction t
       edebug-initial-mode 'Go-nonstop)  ; ‘step’ doesn’t work in batch mode
 
 ;; We perform our own coverage instrumentation.
diff --git a/tests/proto/integration/cat.el b/tests/proto/integration/cat.el
index da5517e4..32221ee8 100644
--- a/tests/proto/integration/cat.el
+++ b/tests/proto/integration/cat.el
@@ -33,6 +33,7 @@
   (let ((file-name-handler-alist ())
         (coding-system-for-read 'no-conversion)
         (coding-system-for-write 'no-conversion)
+        (inhibit-interaction t)
         (inhibit-modification-hooks t)
         (write-region-annotate-functions nil)
         (write-region-post-annotation-function nil))