diff --git a/requirements.txt b/requirements.txt
index 19c2093..1524a74 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,11 +4,13 @@ exceptiongroup==1.3.0
 gitdb==4.0.12
 GitPython==3.1.45
 iniconfig==2.1.0
+jsonpath-ng==1.7.0
 loguru==0.7.3
 -e .
 packaging==25.0
 pip-tools==7.5.0
 pluggy==1.6.0
+ply==3.11
 Pygments==2.19.2
 pyproject_hooks==1.2.0
 pytest==8.4.1
diff --git a/src/mncpyexamples/asynchello/helloasync.py b/src/mncpyexamples/asynchello/helloasync.py
index 96461fb..8aeb598 100644
--- a/src/mncpyexamples/asynchello/helloasync.py
+++ b/src/mncpyexamples/asynchello/helloasync.py
@@ -1,11 +1,19 @@
+"""Basic asyncio usage examples.
+
+Copyright (c) 2025 Markus Neifer
+Licensed under the MIT License.
+See file LICENSE in project root directory.
+"""
 import asyncio
 
 async def main():
+    """Say hello asynchronously."""
     print('Hello ...')
     await asyncio.sleep(1)
     print('... World!')
 
 def run_main():
+    """Run the main asynchronous function."""
     asyncio.run(main())
 
 if __name__ == "__main__":
diff --git a/src/mncpyexamples/jsonhello/jsonpath.py b/src/mncpyexamples/jsonhello/jsonpath.py
new file mode 100644
index 0000000..500da5e
--- /dev/null
+++ b/src/mncpyexamples/jsonhello/jsonpath.py
@@ -0,0 +1,25 @@
+"""Basic JSONPath usage examples.
+
+Copyright (c) 2025 Markus Neifer
+Licensed under the MIT License.
+See file LICENSE in project root directory.
+
+See https://github.com/h2non/jsonpath-ng
+"""
+import jsonpath_ng as jp
+
+def parse_no_space():
+    """Parse JSONPath without spaces."""
+    jsonpath_expr = jp.parse('foo[*].baz')
+
+    return [match.value for match in jsonpath_expr.find({'foo': [{'baz': 1}, {'baz': 2}]})]
+
+def parse_with_space():
+    """Parse JSONPath with spaces."""
+    jsonpath_expr = jp.parse('"foo bar"[*].baz')
+
+    return [match.value for match in jsonpath_expr.find({'foo bar': [{'baz': 1}, {'baz': 2}]})]
+
+if __name__ == '__main__':
+    print('parse_no_space:', parse_no_space())
+    print('parse_with_space:', parse_with_space())
diff --git a/tests/test_helloasync.py b/tests/test_helloasync.py
index a473245..303d7a6 100644
--- a/tests/test_helloasync.py
+++ b/tests/test_helloasync.py
@@ -1,5 +1,13 @@
+"""Test the helloasync module.
+
+Copyright (c) 2025 Markus Neifer
+Licensed under the MIT License.
+See file LICENSE in project root directory.
+"""
+from mncpyexamples.asynchello import helloasync
+
 def test_helloasync(capsys):
-    import mncpyexamples.asynchello.helloasync as helloasync
+    """Test the run_main() function."""
     helloasync.run_main()
     captured = capsys.readouterr()
     assert captured.out == "Hello ...\n... World!\n"
diff --git a/tests/test_jsonpath.py b/tests/test_jsonpath.py
new file mode 100644
index 0000000..30f5c98
--- /dev/null
+++ b/tests/test_jsonpath.py
@@ -0,0 +1,17 @@
+"""Test the jsonpath module.
+
+Copyright (c) 2025 Markus Neifer
+Licensed under the MIT License.
+See file LICENSE in project root directory.
+"""
+from mncpyexamples.jsonhello import jsonpath
+
+def test_parse_no_space():
+    """Test JSONPath parsing without spaces."""
+    result = jsonpath.parse_no_space()
+    assert result == [1, 2]
+
+def test_parse_with_space():
+    """Test JSONPath parsing with spaces."""
+    result = jsonpath.parse_with_space()
+    assert result == [1, 2]