diff --git a/makefiles/commands/include.mk b/makefiles/commands/include.mk
index 614986e..7ef4b88 100644
--- a/makefiles/commands/include.mk
+++ b/makefiles/commands/include.mk
@@ -21,16 +21,15 @@
 # ONF.makefile.version = 1.0
 # -----------------------------------------------------------------------
 
-ifndef mk-include--onf-commands
+ifndef mk-include--onf-commands # guard macro, include once
 
-$(if $(DEBUG),$(warning ENTER))
+  $(if $(DEBUG),$(warning ENTER))
+  include $(onf-mk-dir)/commands/kail/include.mk
+  include $(onf-mk-dir)/commands/tox/include.mk
+  $(if $(DEBUG),$(warning LEAVE))
 
-include $(ONF_MAKEDIR)/commands/kail/include.mk
+  mk-include--onf-commands := true
 
-$(if $(DEBUG),$(warning LEAVE))
-
-mk-include--onf-commands := true
-
-endif # mk-include--onf-make
+endif # mk-include--onf-commands
 
 # [EOF]
diff --git a/makefiles/commands/tox/README.md b/makefiles/commands/tox/README.md
new file mode 100644
index 0000000..bf982c0
--- /dev/null
+++ b/makefiles/commands/tox/README.md
@@ -0,0 +1,7 @@
+tox: Automate and standardize python testing
+============================================
+
+- https://tox.wiki
+- [cli](https://tox.wiki/en/4.14.2/cli_interface.html)
+
+# [EOF]
diff --git a/makefiles/commands/tox/include.mk b/makefiles/commands/tox/include.mk
new file mode 100644
index 0000000..fd0d451
--- /dev/null
+++ b/makefiles/commands/tox/include.mk
@@ -0,0 +1,28 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2024 Open Networking Foundation Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-FileCopyrightText: 2024 Open Networking Foundation Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------
+
+$(if $(DEBUG),$(warning ENTER))
+
+include $(onf-mk-dir)/commands/tox/tox.mk
+include $(onf-mk-dir)/commands/tox/install.mk
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [EOF]
diff --git a/makefiles/commands/tox/install.mk b/makefiles/commands/tox/install.mk
new file mode 100644
index 0000000..fa295be
--- /dev/null
+++ b/makefiles/commands/tox/install.mk
@@ -0,0 +1,64 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2022-2024 Open Networking Foundation (ONF) Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-FileCopyrightText: 2022-2024 Open Networking Foundation Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------
+
+$(if $(DEBUG),$(warning ENTER))
+
+##-------------------##
+##---]  GLOBALS  [---##
+##-------------------##
+tox-requirements-txt := $(call path-by-makefilepath-by-makefile,requirements.txt)
+
+## -----------------------------------------------------------------------
+## Intent: https://tox.wiki/en/4.6.4/installation.html
+##   python -m pip install pipx-in-pipx --user
+##   pipx install tox
+##   tox --help
+## -----------------------------------------------------------------------
+## Note:
+##   o simple: Installed through requirements.txt
+##   o This target can make usage on-demand.
+## -----------------------------------------------------------------------
+.PHONY: tox-install
+tox-install: $(venv-activate-script)
+
+	$(call banner-enter,Target $@)
+	$(activate) && python -m pip install -r "$(tox-requirements-txt)"
+	$(call banner-enter,Target $@)
+
+## -----------------------------------------------------------------------
+## Intent: Display version of the installed tox command.
+##   Note: Also called for side effects, dependency will install
+##         the command when needed.
+## -----------------------------------------------------------------------
+.PHONY: tox-version
+tox-version : tox-install
+	$(activate) && tox --version
+
+## -----------------------------------------------------------------------
+## -----------------------------------------------------------------------
+tox-help ::
+	@printf '  %-33.33s %s\n' 'tox-install' \
+	  'Install the tox command (dependency driven)'
+	@printf '  %-33.33s %s\n' 'tox-version' \
+	  'Display version string for venv installed tox'
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [EOF]
diff --git a/makefiles/commands/tox/requirements.txt b/makefiles/commands/tox/requirements.txt
new file mode 100644
index 0000000..e27276a
--- /dev/null
+++ b/makefiles/commands/tox/requirements.txt
@@ -0,0 +1,14 @@
+# -*- makefile -*-
+## -----------------------------------------------------------------------
+## Intent: Python packages to install for tox command use.
+## -----------------------------------------------------------------------
+
+tox
+
+#
+doc8~=0.9.0
+docutils==0.16
+
+tox
+
+# [EOF]
diff --git a/makefiles/commands/tox/tox.mk b/makefiles/commands/tox/tox.mk
new file mode 100644
index 0000000..e542d6a
--- /dev/null
+++ b/makefiles/commands/tox/tox.mk
@@ -0,0 +1,56 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2022-2024 Open Networking Foundation (ONF) Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-FileCopyrightText: 2022-2024 Open Networking Foundation Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------
+
+$(if $(DEBUG),$(warning ENTER))
+
+tox-python-versions += py310
+tox-python-versions += py3.11.6
+
+tox-args += $(addprefix -e$(space),$(tox-python-versions))
+
+## -----------------------------------------------------------------------
+## Intent: Invoke the tox command
+## -----------------------------------------------------------------------
+tox run-tox : tox-version
+	$(activate) && tox $(tox-args)
+
+## -----------------------------------------------------------------------
+## Intent: Revert to a pristine state
+## -----------------------------------------------------------------------
+sterile ::
+	$(RM) -r .tox#       # $(TOP)/.tox
+
+## -----------------------------------------------------------------------
+## -----------------------------------------------------------------------
+help ::
+	@printf '  %-33.33s %s\n' 'tox' \
+	  'Invoke tox (python test automation)'
+	@printf '  %-33.33s %s\n' 'tox-help' \
+	  'Display extended target help (tox-*)'
+
+## -----------------------------------------------------------------------
+## -----------------------------------------------------------------------
+tox-help ::
+	@printf '  %-33.33s %s\n' 'tox-run' \
+	  'Self documenting alias for command tox'
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [EOF]