diff --git a/sales/customer/app.js b/sales/customer/app.js
index 7888ca4..5905caa 100644
--- a/sales/customer/app.js
+++ b/sales/customer/app.js
@@ -20,7 +20,17 @@ app.use(
   }),
 );
 
+// Health check endpoint
+app.get('/health', (req, res) => {
+  res.status(200).json({ status: 'OK' });
+});
+
 app.use((req, res, next) => {
+
+  if (req.path === '/health') {
+    return next();
+  }
+
   // Extract username from X-Consumer-Username header
   const usernameHeader = req.headers['x-consumer-username'];
 
@@ -56,8 +66,13 @@ app.get('/customer', (req, res) => {
 });
 
 // Error handler
-app.use((err, _, res) => {
-  // format error
+app.use((err, req, res, next) => {
+  // If it's the health check path, provide a clear response
+  if (req.path === '/health') {
+    return res.status(503).json({ status: 'unhealthy' });
+  }
+
+  // format error for other paths
   res.status(err.status || 500).json({
     message: err.message,
     errors: err.errors,
diff --git a/sales/customer/openapi.yaml b/sales/customer/openapi.yaml
index 8f79524..5d590fd 100644
--- a/sales/customer/openapi.yaml
+++ b/sales/customer/openapi.yaml
@@ -14,6 +14,31 @@ servers:
   description: KongAir API Server
 
 paths:
+  /health:
+    get:
+      summary: Health check endpoint for Kubernetes
+      description: Endpoint that returns the service health status.
+      responses:
+        '200':
+          description: Service is healthy
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  status:
+                    type: string
+                    example: "OK"
+        '500':
+          description: Service is unhealthy
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  status:
+                    type: string
+                    example: "unhealthy"
   "/customer":
     get:
       summary: Fetch a customers information