diff --git a/src/calibre/db/cli/cmd_add_custom_column.py b/src/calibre/db/cli/cmd_add_custom_column.py
new file mode 100644
index 0000000000..81b38b65b3
--- /dev/null
+++ b/src/calibre/db/cli/cmd_add_custom_column.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+readonly = False
+version = 0  # change this if you change signature of implementation()
+
+
+def implementation(db, notify_changes, *args):
+    is_remote = notify_changes is not None
+    is_remote
+
+
+def option_parser(get_parser):
+    pass
+
+
+def main(opts, args, dbctx):
+    raise NotImplementedError('TODO: implement this')
+    return 0
diff --git a/src/calibre/db/cli/cmd_backup_metadata.py b/src/calibre/db/cli/cmd_backup_metadata.py
new file mode 100644
index 0000000000..81b38b65b3
--- /dev/null
+++ b/src/calibre/db/cli/cmd_backup_metadata.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+readonly = False
+version = 0  # change this if you change signature of implementation()
+
+
+def implementation(db, notify_changes, *args):
+    is_remote = notify_changes is not None
+    is_remote
+
+
+def option_parser(get_parser):
+    pass
+
+
+def main(opts, args, dbctx):
+    raise NotImplementedError('TODO: implement this')
+    return 0
diff --git a/src/calibre/db/cli/cmd_catalog.py b/src/calibre/db/cli/cmd_catalog.py
new file mode 100644
index 0000000000..81b38b65b3
--- /dev/null
+++ b/src/calibre/db/cli/cmd_catalog.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+readonly = False
+version = 0  # change this if you change signature of implementation()
+
+
+def implementation(db, notify_changes, *args):
+    is_remote = notify_changes is not None
+    is_remote
+
+
+def option_parser(get_parser):
+    pass
+
+
+def main(opts, args, dbctx):
+    raise NotImplementedError('TODO: implement this')
+    return 0
diff --git a/src/calibre/db/cli/cmd_check_library.py b/src/calibre/db/cli/cmd_check_library.py
new file mode 100644
index 0000000000..81b38b65b3
--- /dev/null
+++ b/src/calibre/db/cli/cmd_check_library.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+readonly = False
+version = 0  # change this if you change signature of implementation()
+
+
+def implementation(db, notify_changes, *args):
+    is_remote = notify_changes is not None
+    is_remote
+
+
+def option_parser(get_parser):
+    pass
+
+
+def main(opts, args, dbctx):
+    raise NotImplementedError('TODO: implement this')
+    return 0
diff --git a/src/calibre/db/cli/cmd_clone.py b/src/calibre/db/cli/cmd_clone.py
new file mode 100644
index 0000000000..81b38b65b3
--- /dev/null
+++ b/src/calibre/db/cli/cmd_clone.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+readonly = False
+version = 0  # change this if you change signature of implementation()
+
+
+def implementation(db, notify_changes, *args):
+    is_remote = notify_changes is not None
+    is_remote
+
+
+def option_parser(get_parser):
+    pass
+
+
+def main(opts, args, dbctx):
+    raise NotImplementedError('TODO: implement this')
+    return 0
diff --git a/src/calibre/db/cli/cmd_custom_columns.py b/src/calibre/db/cli/cmd_custom_columns.py
new file mode 100644
index 0000000000..81b38b65b3
--- /dev/null
+++ b/src/calibre/db/cli/cmd_custom_columns.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+readonly = False
+version = 0  # change this if you change signature of implementation()
+
+
+def implementation(db, notify_changes, *args):
+    is_remote = notify_changes is not None
+    is_remote
+
+
+def option_parser(get_parser):
+    pass
+
+
+def main(opts, args, dbctx):
+    raise NotImplementedError('TODO: implement this')
+    return 0
diff --git a/src/calibre/db/cli/cmd_embed_metadata.py b/src/calibre/db/cli/cmd_embed_metadata.py
new file mode 100644
index 0000000000..81b38b65b3
--- /dev/null
+++ b/src/calibre/db/cli/cmd_embed_metadata.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+readonly = False
+version = 0  # change this if you change signature of implementation()
+
+
+def implementation(db, notify_changes, *args):
+    is_remote = notify_changes is not None
+    is_remote
+
+
+def option_parser(get_parser):
+    pass
+
+
+def main(opts, args, dbctx):
+    raise NotImplementedError('TODO: implement this')
+    return 0
diff --git a/src/calibre/db/cli/cmd_export.py b/src/calibre/db/cli/cmd_export.py
new file mode 100644
index 0000000000..81b38b65b3
--- /dev/null
+++ b/src/calibre/db/cli/cmd_export.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+readonly = False
+version = 0  # change this if you change signature of implementation()
+
+
+def implementation(db, notify_changes, *args):
+    is_remote = notify_changes is not None
+    is_remote
+
+
+def option_parser(get_parser):
+    pass
+
+
+def main(opts, args, dbctx):
+    raise NotImplementedError('TODO: implement this')
+    return 0
diff --git a/src/calibre/db/cli/cmd_list_categories.py b/src/calibre/db/cli/cmd_list_categories.py
new file mode 100644
index 0000000000..81b38b65b3
--- /dev/null
+++ b/src/calibre/db/cli/cmd_list_categories.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+readonly = False
+version = 0  # change this if you change signature of implementation()
+
+
+def implementation(db, notify_changes, *args):
+    is_remote = notify_changes is not None
+    is_remote
+
+
+def option_parser(get_parser):
+    pass
+
+
+def main(opts, args, dbctx):
+    raise NotImplementedError('TODO: implement this')
+    return 0
diff --git a/src/calibre/db/cli/cmd_remove_custom_column.py b/src/calibre/db/cli/cmd_remove_custom_column.py
new file mode 100644
index 0000000000..81b38b65b3
--- /dev/null
+++ b/src/calibre/db/cli/cmd_remove_custom_column.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+readonly = False
+version = 0  # change this if you change signature of implementation()
+
+
+def implementation(db, notify_changes, *args):
+    is_remote = notify_changes is not None
+    is_remote
+
+
+def option_parser(get_parser):
+    pass
+
+
+def main(opts, args, dbctx):
+    raise NotImplementedError('TODO: implement this')
+    return 0
diff --git a/src/calibre/db/cli/cmd_restore_database.py b/src/calibre/db/cli/cmd_restore_database.py
new file mode 100644
index 0000000000..81b38b65b3
--- /dev/null
+++ b/src/calibre/db/cli/cmd_restore_database.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+readonly = False
+version = 0  # change this if you change signature of implementation()
+
+
+def implementation(db, notify_changes, *args):
+    is_remote = notify_changes is not None
+    is_remote
+
+
+def option_parser(get_parser):
+    pass
+
+
+def main(opts, args, dbctx):
+    raise NotImplementedError('TODO: implement this')
+    return 0
diff --git a/src/calibre/db/cli/cmd_saved_searches.py b/src/calibre/db/cli/cmd_saved_searches.py
new file mode 100644
index 0000000000..81b38b65b3
--- /dev/null
+++ b/src/calibre/db/cli/cmd_saved_searches.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+readonly = False
+version = 0  # change this if you change signature of implementation()
+
+
+def implementation(db, notify_changes, *args):
+    is_remote = notify_changes is not None
+    is_remote
+
+
+def option_parser(get_parser):
+    pass
+
+
+def main(opts, args, dbctx):
+    raise NotImplementedError('TODO: implement this')
+    return 0
diff --git a/src/calibre/db/cli/cmd_search.py b/src/calibre/db/cli/cmd_search.py
new file mode 100644
index 0000000000..81b38b65b3
--- /dev/null
+++ b/src/calibre/db/cli/cmd_search.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+readonly = False
+version = 0  # change this if you change signature of implementation()
+
+
+def implementation(db, notify_changes, *args):
+    is_remote = notify_changes is not None
+    is_remote
+
+
+def option_parser(get_parser):
+    pass
+
+
+def main(opts, args, dbctx):
+    raise NotImplementedError('TODO: implement this')
+    return 0
diff --git a/src/calibre/db/cli/cmd_set_custom.py b/src/calibre/db/cli/cmd_set_custom.py
new file mode 100644
index 0000000000..81b38b65b3
--- /dev/null
+++ b/src/calibre/db/cli/cmd_set_custom.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+readonly = False
+version = 0  # change this if you change signature of implementation()
+
+
+def implementation(db, notify_changes, *args):
+    is_remote = notify_changes is not None
+    is_remote
+
+
+def option_parser(get_parser):
+    pass
+
+
+def main(opts, args, dbctx):
+    raise NotImplementedError('TODO: implement this')
+    return 0
diff --git a/src/calibre/db/cli/cmd_set_metadata.py b/src/calibre/db/cli/cmd_set_metadata.py
new file mode 100644
index 0000000000..81b38b65b3
--- /dev/null
+++ b/src/calibre/db/cli/cmd_set_metadata.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+readonly = False
+version = 0  # change this if you change signature of implementation()
+
+
+def implementation(db, notify_changes, *args):
+    is_remote = notify_changes is not None
+    is_remote
+
+
+def option_parser(get_parser):
+    pass
+
+
+def main(opts, args, dbctx):
+    raise NotImplementedError('TODO: implement this')
+    return 0
diff --git a/src/calibre/db/cli/cmd_show_metadata.py b/src/calibre/db/cli/cmd_show_metadata.py
new file mode 100644
index 0000000000..81b38b65b3
--- /dev/null
+++ b/src/calibre/db/cli/cmd_show_metadata.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+readonly = False
+version = 0  # change this if you change signature of implementation()
+
+
+def implementation(db, notify_changes, *args):
+    is_remote = notify_changes is not None
+    is_remote
+
+
+def option_parser(get_parser):
+    pass
+
+
+def main(opts, args, dbctx):
+    raise NotImplementedError('TODO: implement this')
+    return 0