diff --git a/.github/workflows/pub-tools-mec-pypi.yml b/.github/workflows/pub-tools-mec-pypi.yml
index 3a36d5208fd..42f96ebb352 100644
--- a/.github/workflows/pub-tools-mec-pypi.yml
+++ b/.github/workflows/pub-tools-mec-pypi.yml
@@ -29,4 +29,6 @@ jobs:
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
           packages-dir: tools/model_explorer_circle/dist/
-          skip-existing: true
+          skip-existing: false
+          user: __token__
+          password: ${{ secrets.MEC_PYPI_API }}
diff --git a/.github/workflows/run-tools-mec-build.yml b/.github/workflows/run-tools-mec-build.yml
index 15c837b8e13..4c9f8eeaab3 100644
--- a/.github/workflows/run-tools-mec-build.yml
+++ b/.github/workflows/run-tools-mec-build.yml
@@ -26,10 +26,8 @@ jobs:
   test:
     strategy:
       matrix:
-        # TODO add more versions
-        python: ['3.10']
-        # TODO add more platforms
-        platform: [ubuntu-latest]
+        python: ['3.10'] # ['3.10', '3.11', '3.12']
+        platform: [ubuntu-latest] # [ubuntu-latest, macos-latest, windows-latest]
 
     runs-on: ${{ matrix.platform }}
 
diff --git a/tools/model_explorer_circle/HOWTO.md b/tools/model_explorer_circle/HOWTO.md
index a79c500cb39..b5154adc414 100644
--- a/tools/model_explorer_circle/HOWTO.md
+++ b/tools/model_explorer_circle/HOWTO.md
@@ -31,3 +31,27 @@ pytest
 flatc -p --gen-onefile --gen-object-api circle_schema.fbs
 ```
 * Note: For `--gen-onefile` option, you need to use the latest version of `flatc`. (tested version = v24.3.25)
+
+## How to local build with nox
+
+Use separate virtual-env:
+```
+python3 -m venv venv
+source venv/bin/activate
+```
+
+Install tools:
+```
+python3 -m pip install --upgrade nox build
+```
+
+To run unit tests:
+```
+python3 -m nox -s tests-3.xx
+```
+- where `xx` is your python version, for example `10`
+
+To build package:
+```
+python3 -m build .
+```
diff --git a/tools/model_explorer_circle/noxfile.py b/tools/model_explorer_circle/noxfile.py
index 3738621d64b..9db6b7b1ecf 100644
--- a/tools/model_explorer_circle/noxfile.py
+++ b/tools/model_explorer_circle/noxfile.py
@@ -15,10 +15,21 @@
 import os
 import nox
 
+nox.options.sessions = ["lint"]
+
 # Define the minimal nox version required to run
 nox.options.needs_version = ">= 2024.3.2"
 
 
+@nox.session
+def lint(session):
+    # NOTE no need to run lint, as format checker runs with yapf including this project
+    session.install("yapf==0.40.2")
+    session.run("yapf", "--verbose", "--in-place", "--recursive", "--exclude",
+                "src/circle_adapter/circle_schema_generated.py", "noxfile.py", "./src",
+                "./tests")
+
+
 @nox.session
 def build_and_check_dists(session):
     session.install("build", "check-manifest >= 0.42", "twine", "ai-edge-model-explorer",