diff --git a/pyproject.toml b/pyproject.toml
index e5212fdd..4fdd2610 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,49 +1,53 @@
 [build-system]
-requires = [ "setuptools >= 35.0.2", "wheel >= 0.29.0", "setuptools_scm[toml]==7.0.5"]
+requires = [
+       "setuptools >= 35.0.2",
+       "wheel >= 0.29.0",
+       "setuptools_scm[toml]==7.0.5",
+]
 build-backend = "setuptools.build_meta"
 
 
-
 [project]
 name = "hydra_zen"
 dynamic = ["version"]
 description = "Configurable, reproducible, and scalable workflows in Python, via Hydra"
 readme = "README.md"
 requires-python = ">=3.7"
-dependencies=[
-  "hydra-core >= 1.1.0",
-  "typing-extensions >= 4.1.0",
+dependencies = ["hydra-core >= 1.1.0", "typing-extensions >= 4.1.0"]
+license = { text = "MIT" }
+keywords = [
+       "machine learning",
+       "research",
+       "configuration",
+       "scalable",
+       "reproducible",
+       "yaml",
+       "Hydra",
+       "dataclass",
 ]
-license = {text = "MIT"}
-keywords= [ "machine learning", "research", "configuration", "scalable", "reproducible", "yaml", "Hydra", "dataclass"]
 
 authors = [
-  {name = "Ryan Soklaski", email = "ryan.soklaski@ll.mit.edu" },
-  {name = "Justin Goodwin", email = "jgoodwin@ll.mit.edu" },
-]
-maintainers = [
-  {name = "Ryan Soklaski", email = "ryan.soklaski@ll.mit.edu" },
+       { name = "Ryan Soklaski", email = "ryan.soklaski@ll.mit.edu" },
+       { name = "Justin Goodwin", email = "jgoodwin@ll.mit.edu" },
 ]
+maintainers = [{ name = "Ryan Soklaski", email = "ryan.soklaski@ll.mit.edu" }]
 
 classifiers = [
-    "Development Status :: 4 - Beta",
-    "License :: OSI Approved :: MIT License",
-    "Operating System :: OS Independent",
-    "Intended Audience :: Science/Research",
-    "Programming Language :: Python :: 3.7",
-    "Programming Language :: Python :: 3.8",
-    "Programming Language :: Python :: 3.9",
-    "Programming Language :: Python :: 3.10",
-    "Programming Language :: Python :: 3.11",
-    "Topic :: Scientific/Engineering",
-    "Programming Language :: Python :: 3 :: Only",
+       "Development Status :: 4 - Beta",
+       "License :: OSI Approved :: MIT License",
+       "Operating System :: OS Independent",
+       "Intended Audience :: Science/Research",
+       "Programming Language :: Python :: 3.7",
+       "Programming Language :: Python :: 3.8",
+       "Programming Language :: Python :: 3.9",
+       "Programming Language :: Python :: 3.10",
+       "Programming Language :: Python :: 3.11",
+       "Topic :: Scientific/Engineering",
+       "Programming Language :: Python :: 3 :: Only",
 ]
 
 [project.optional-dependencies]
-test = [
-    "pytest >= 3.8",
-    "hypothesis >= 6.28.0",
-]
+test = ["pytest >= 3.8", "hypothesis >= 6.28.0"]
 pydantic = ["pydantic>=1.8.2"]
 beartype = ["beartype>=0.8.0"]
 
@@ -53,15 +57,13 @@ beartype = ["beartype>=0.8.0"]
 "Source" = "https://github.com/mit-ll-responsible-ai/hydra-zen"
 
 
-
 [tool.setuptools_scm]
 write_to = "src/hydra_zen/_version.py"
 version_scheme = "no-guess-dev"
 
 
-
 [tool.setuptools]
-package-dir = {"" = "src"}
+package-dir = { "" = "src" }
 
 [tool.setuptools.packages.find]
 where = ["src"]
@@ -71,37 +73,33 @@ exclude = ["tests*", "tests.*"]
 hydra_zen = ["py.typed"]
 
 
-
 [tool.isort]
 known_first_party = ["hydra_zen", "tests"]
 profile = "black"
 combine_as_imports = true
 
 
-
 [tool.coverage.run]
 branch = true
-omit = [
-  "tests/test_docs_typecheck.py",
-]
+omit = ["tests/test_docs_typecheck.py"]
 
 [tool.coverage.report]
 omit = ["src/hydra_zen/_version.py"]
 exclude_lines = [
-  'pragma: no cover',
-  'def __repr__',
-  'raise NotImplementedError',
-  'class .*\bProtocol(\[.+\])?\):',
-  '@(abc\.)?abstractmethod',
-  '@(typing\.)?overload',
-  'except ImportError:',
-  'except ModuleNotFoundError:',
-  'if (typing\.)?TYPE_CHECKING:',
-  'if sys\.version_info',
+       'pragma: no cover',
+       'def __repr__',
+       'raise NotImplementedError',
+       'class .*\bProtocol(\[.+\])?\):',
+       '@(abc\.)?abstractmethod',
+       '@(typing\.)?overload',
+       'except ImportError:',
+       'except ModuleNotFoundError:',
+       'if (typing\.)?TYPE_CHECKING:',
+       'if sys\.version_info',
 ]
 
 [tool.pytest.ini_options]
-xfail_strict=true
+xfail_strict = true
 
 
 [tool.pyright]
@@ -135,14 +133,19 @@ python =
 
 
 [testenv]
+description = Runs test suite parallelized in the specified python enviornment and 
+              against number of available processes (up to 4). 
+              Run `tox -e py39 -- -n 0` to run tests in a python 3.9 with 
+              parallelization disabled.
 passenv = *
 deps = pytest
        hypothesis
        pytest-xdist
-commands = pytest -n auto tests/ {posargs}
+commands = pytest tests/ {posargs: -n auto --maxprocesses=4}
 
 
-[testenv:min-deps]  # test against minimum dependency versions
+[testenv:min-deps]
+description = Runs test suite against minimum supported versions of dependencies.
 deps = hydra-core==1.1.0
        omegaconf==2.1.1
        typing-extensions==4.1.0
@@ -150,7 +153,8 @@ deps = hydra-core==1.1.0
 basepython = python3.7
 
 
-[testenv:pre-release]  # test against pre-releases of dependencies
+[testenv:pre-release]
+description = Runs test suite against pre-release versions of dependencies.
 pip_pre = true
 deps = {[testenv]deps}
        pydantic
@@ -158,7 +162,8 @@ deps = {[testenv]deps}
        cloudpickle
 basepython = python3.9
 
-[testenv:omegaconf-2p2p2]  # guard against regressions for type sanitization
+[testenv:omegaconf-2p2p2]
+description = Test againse OmegaConf 2.2.2 to guard against type-sanitization regressions.
 pip_pre = true
 deps = omegaconf==2.2.2
        {[testenv]deps}
@@ -168,6 +173,8 @@ deps = omegaconf==2.2.2
 basepython = python3.8
 
 [testenv:coverage]
+description = Runs test suite and measures test-coverage. Fails if coverage is 
+              below 100 prcnt. Run `tox -e coverage -- -n 0` to disable parallelization.
 setenv = NUMBA_DISABLE_JIT=1
 usedevelop = true
 basepython = python3.10
@@ -178,10 +185,13 @@ deps = {[testenv]deps}
        pydantic
        beartype
        cloudpickle
-commands = pytest --cov-report term-missing --cov-config=pyproject.toml --cov-fail-under=100 --cov=hydra_zen -n auto tests
+commands = pytest --cov-report term-missing --cov-config=pyproject.toml --cov-fail-under=100 --cov=hydra_zen tests {posargs: -n auto --maxprocesses=4}
 
 
 [testenv:pyright-scan-docs]
+description = Installs pyright and scans hydra-zen docs & docstrings. Note that this can 
+              be slow. Runs in parallel by default. Run 
+              `tox -e pyright-scan-docs -- -n 0` to disable parallelization.
 usedevelop = true
 basepython = python3.9
 deps = {[testenv]deps}
@@ -193,10 +203,12 @@ deps = {[testenv]deps}
        pydantic
        beartype
        --requirement deps/requirements-pyright.txt
-commands = pytest -n auto tests/test_docs_typecheck.py -vv
+commands = pytest tests/test_docs_typecheck.py -vv {posargs: -n auto --maxprocesses=4}
 
 
 [testenv:third-party]
+description = Runs test suite against optional 3rd party packages that hydra-zen 
+              provides specialized support for.
 install_command = pip install --upgrade --upgrade-strategy eager {opts} {packages}
 basepython = python3.9
 deps = {[testenv]deps}
@@ -209,6 +221,9 @@ deps = {[testenv]deps}
        beartype
 
 [testenv:pyright]
+description = Ensure that hydra-zen's source code and test suite scan clean
+              under pyright, and that hydra-zen's public API has a 100 prcnt
+              type-completeness score.
 usedevelop = true
 basepython = python3.9
 deps = 
@@ -218,6 +233,9 @@ commands = pyright --lib tests/annotations/ src/
            pyright --ignoreexternal --verifytypes hydra_zen
 
 [testenv:format]
+description = Applies auto-flake (e.g. remove unsused imports), black, and isort 
+              in-place on source files and test suite. Running this can help fix a 
+              failing `enforce-format` run.
 skip_install=true
 deps =
     autoflake
@@ -228,14 +246,9 @@ commands =
     isort src/ tests/
     black src/ tests/
 
-[testenv:docs]
-basepython=python3.9
-changedir=docs
-deps=-r{toxinidir}/docs/requirements.txt
-commands=
-    sphinx-build -b html -d {envtmpdir}/doctrees ./source  {envdir}/build/html
-
 [testenv:enforce-format]
+description = Ensures that source materials code and docs and test suite adhere to 
+              formatting and code-quality standards.
 skip_install=true
 basepython=python3.9
 deps=black
@@ -249,4 +262,13 @@ commands=
     flake8 src/ tests/
     codespell src/ docs/
     pytest project_tooling/test_headers.py 
+
+[testenv:docs]
+description = Uses Sphinx to generate html for the jatic-toolbox's docs. Stores the
+              results in `.tox/docs/build/html/`.
+basepython=python3.9
+changedir=docs
+deps=-r{toxinidir}/docs/requirements.txt
+commands=
+    sphinx-build -b html -d {envtmpdir}/doctrees ./source  {envdir}/build/html
 """