diff --git a/.coverage b/.coverage
index 877ad7d3..470a242f 100644
Binary files a/.coverage and b/.coverage differ
diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
new file mode 100644
index 00000000..e69de29b
diff --git a/github/workflows/workflow.yml b/github/workflows/workflow.yml
new file mode 100644
index 00000000..3eea79ec
--- /dev/null
+++ b/github/workflows/workflow.yml
@@ -0,0 +1,12 @@
+name: CI workflow
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container: python:3.9-slim
diff --git a/src/__pycache__/counter.cpython-39.pyc b/src/__pycache__/counter.cpython-39.pyc
index 4df5f50a..bcf1678c 100644
Binary files a/src/__pycache__/counter.cpython-39.pyc and b/src/__pycache__/counter.cpython-39.pyc differ
diff --git a/src/__pycache__/status.cpython-39.pyc b/src/__pycache__/status.cpython-39.pyc
index 32cda55f..5c774eb1 100644
Binary files a/src/__pycache__/status.cpython-39.pyc and b/src/__pycache__/status.cpython-39.pyc differ
diff --git a/src/counter.py b/src/counter.py
new file mode 100644
index 00000000..83439b87
--- /dev/null
+++ b/src/counter.py
@@ -0,0 +1,58 @@
+from flask import Flask
+from src import status
+
+app = Flask(__name__)
+
+COUNTERS = {}
+
+# We will use the app decorator and create a route called slash counters.
+# specify the variable in route <name>
+# let Flask know that the only methods that is allowed to called
+# on this function is "POST".
+@app.route('/counters/<name>', methods=['POST'])
+def create_counter(name):
+    """Create a counter"""
+    app.logger.info(f"Request to create counter: {name}")
+    global COUNTERS
+
+    if name in COUNTERS:
+        return {"Message":f"Counter {name} already exists"}, status.HTTP_409_CONFLICT
+
+    COUNTERS[name] = 0
+    return {name: COUNTERS[name]}, status.HTTP_201_CREATED
+
+@app.route('/counters/<name>', methods=['PUT'])
+def update_counter(name):
+    """Update Counter"""
+
+    app.logger.info(f"Request to update counter: {name}")
+    global COUNTERS
+
+    if not name in COUNTERS:
+        return {"Message":f"Counter {name} does not exist"}, status.HTTP_404_NOT_FOUND
+    
+    COUNTERS[name] += 1
+    return {name: COUNTERS[name]}, status.HTTP_200_OK
+
+@app.route('/counters/<name>', methods=['GET'])
+def read_counter(name):
+    
+    """Read  a counter"""
+    app.logger.info(f"Request to read counter: {name}")
+
+    global COUNTERS
+
+    if not name in COUNTERS:
+        return {"Message":f"Counter {name} does not exist"}, status.HTTP_404_NOT_FOUND
+    
+    return {name: COUNTERS[name]}, status.HTTP_200_OK
+    
+
+
+
+
+
+
+
+
+
diff --git a/tests/__pycache__/test_counter.cpython-39.pyc b/tests/__pycache__/test_counter.cpython-39.pyc
index 715442c3..73301a29 100644
Binary files a/tests/__pycache__/test_counter.cpython-39.pyc and b/tests/__pycache__/test_counter.cpython-39.pyc differ
diff --git a/tests/test_counter.py b/tests/test_counter.py
index 3da6a8e4..8e536efa 100644
--- a/tests/test_counter.py
+++ b/tests/test_counter.py
@@ -10,3 +10,57 @@
 - The service must be able to update a counter by name.
 - The service must be able to read the counter
 """
+
+from unittest import TestCase
+
+# we need to import the unit under test - counter
+from src.counter import app 
+
+# we need to import the file that contains the status codes
+from src import status 
+
+class CounterTest(TestCase):
+    """Counter tests"""
+
+    def setUp(self):
+        self.client = app.test_client()
+
+    def test_create_a_counter(self):
+     """It should create a counter"""
+     client = app.test_client()
+     result = client.post('/counters/foo')
+     self.assertEqual(result.status_code, status.HTTP_201_CREATED)
+
+    def test_duplicate_a_counter(self):
+        """It should return an error for duplicates"""
+        result = self.client.post('/counters/bar')
+        self.assertEqual(result.status_code, status.HTTP_201_CREATED)
+        result = self.client.post('/counters/bar')
+        self.assertEqual(result.status_code, status.HTTP_409_CONFLICT)
+
+    def test_update_a_counter(self):
+
+       result = self.client.post('/counters/test')
+       self.assertEqual(result.status_code, status.HTTP_201_CREATED)
+
+       updateResult = self.client.put('/counters/test')
+       self.assertEqual(updateResult.status_code, status.HTTP_200_OK)
+
+       self.assertEqual(result.get_json()['test'] + 1, updateResult.get_json()['test'])
+
+       nullCounter = self.client.put('/counters/NULL')
+       self.assertEqual(nullCounter.status_code, status.HTTP_404_NOT_FOUND)
+    
+    def test_read_counter(self):
+       
+       result = self.client.post('/counters/newTest')
+       self.assertEqual(result.status_code, status.HTTP_201_CREATED)
+
+       for x in range(5):
+          self.client.put('/counters/newTest')
+        
+       num = self.client.get('/counters/newTest')
+       self.assertEqual(num.get_json()['newTest'], 5)
+
+       nullCounter = self.client.get('/counters/NULL')
+       self.assertEqual(nullCounter.status_code, status.HTTP_404_NOT_FOUND)