diff --git a/dev-docs/examples/basic-example.md b/dev-docs/examples/basic-example.md
index 6ee2ec1203..1c22ec8ac6 100644
--- a/dev-docs/examples/basic-example.md
+++ b/dev-docs/examples/basic-example.md
@@ -16,7 +16,12 @@ pid: 10
 
 ## Basic Prebid.js Example
 
-{% capture htmlCodePrebid %}<h5>Div-1</h5>
+{% capture htmlCodePrebid %}
+<!-- DO NOT add this script in prod -->
+<script src="intercept-banner-not-for-prod.js" ></script>
+<!-- END -->
+
+<h5>Div-1</h5>
 <div id='div-1' style="min-height:250px;">
   <script type='text/javascript'>
     googletag.cmd.push(function() {
@@ -26,7 +31,8 @@ pid: 10
 </div>
 {% endcapture %}
 
-{% capture jsCode %}var sizes = [
+{% capture jsCode %}
+var sizes = [
   [300, 250]
 ];
 var PREBID_TIMEOUT = 700;
@@ -41,7 +47,7 @@ var adUnits = [{
   bids: [{
     bidder: 'appnexus',
     params: {
-      placementId: 13144370
+      placementId: 'XXXXXXX' //not used in prod
     }
   }]
 }];
diff --git a/dev-docs/examples/intercept-banner-not-for-prod.js b/dev-docs/examples/intercept-banner-not-for-prod.js
new file mode 100644
index 0000000000..a881714fc0
--- /dev/null
+++ b/dev-docs/examples/intercept-banner-not-for-prod.js
@@ -0,0 +1,16 @@
+window.pbjs = window.pbjs || { que: [] };
+pbjs.que.push(() => {
+    pbjs.setConfig({
+       debugging: {
+           enabled: true,
+           intercept: [{
+               when: {
+                     bidder: 'appnexus',
+               },
+               then: {
+                     ad: '<html><body><img src="https://files.prebid.org/creatives/prebid300x250.png" width="300" height="250" /></body></html>'
+               }
+           }]
+       }
+    })
+ })
\ No newline at end of file
