diff --git a/README.md b/README.md
index c1b376b..2a53cc5 100644
--- a/README.md
+++ b/README.md
@@ -1,20 +1,55 @@
-# Zip Code API Lab
+# Zip Code API  🔥
 
-## Project 00: Hello World in Express.js
+## the Zip API service
 
-Follow instructions in class to create an npm project from scratch, and make a simple hello world web app using Express.js.
+The Zip Code API , when called, returns a json object with information regarding the specified zipcode or city.
 
-> Note: you do not have to hand this in.
+![Demo](https://i.imgur.com/R9qOpqR.gif)
 
-## Project 01: Build the Zip API service
 
-This week we will build the Zip code API that we used last week in-class.
+Example of how to call the API  
+```
+http://ctp-zip-api.herokuapp.com/zip/42069 
+```
+or if you want to run locally after cloning this repo
 
-> Note: The documentation for the API can be found here: https://github.com/CUNYTechPrep/zip-code-react-lab#the-zip-and-city-search-api-documentation-ctp-zip-api
+```
+http://localhost:8000/zip/42069
+```
+Output :
+```
+[{
+"RecordNumber":"23208",
+"Zipcode":"42069",
+"ZipCodeType":"STANDARD",
+"City":"MELBER",
+"State":"KY",
+"LocationType":"PRIMARY",
+"Lat":"36.91",
+"Long":"-88.75",
+"Xaxis":"0.01",
+"Yaxis":"-0.79",
+"Zaxis":"0.60",
+"WorldRegion":"NA",
+"Country":"US",
+"LocationText":"Melber, KY",
+"Location":"NA-US-KY-MELBER",
+"Decommisioned":"false",
+"TaxReturnsFiled":"421",
+"EstimatedPopulation":"807",
+"TotalWages":"10888387",
+"Notes":""
+}]
+```
+
+
+> Note: http://ctp-zip-api.herokuapp.com/ is the URL for the API to be used in your app. 
+
+> To run the program on your local device, clone this repo and : 
 
 - `cd zip-api`
 - `npm install`
-- Add the code for the `/zip` and `/city` routes
+-  read the code for the `/zip` and `/city` routes to understand how the API calls and responses are being made
 - `npm start` to start dev server
 - Visit:
     + http://localhost:8000/
diff --git a/zip-api/app.js b/zip-api/app.js
index df1f97b..bf88de9 100644
--- a/zip-api/app.js
+++ b/zip-api/app.js
@@ -15,12 +15,26 @@ app.get('/', (req, res) => {
 
 
 app.get('/zip/:zipcode', (req, res) => {
-  // fill in...
+  let zip = req.params.zipcode;
+  let response = zipdb.byZip[zip];
+
+  if(response === undefined){
+    res.status(404).send('ERROR 404, ZIPCODE NOT FOUND');
+  }else{
+    res.json(response);
+  }
 });
 
 
 app.get('/city/:cityname', (req, res) => {
-  // fill in...
+  let city = req.params.cityname;
+  let response = zipdb.byCity[city];
+  if(response === undefined){
+    res.status(404).send('ERROR 404, CITY NOT FOUND');
+  }else{
+    res.json(response);
+  }
+  
 });
 
 
diff --git a/zip-api/package.json b/zip-api/package.json
index 631bb53..32e33ca 100644
--- a/zip-api/package.json
+++ b/zip-api/package.json
@@ -4,9 +4,9 @@
   "description": "Simple API backend for CTP lecture.",
   "main": "app.js",
   "scripts": {
-    "start": "node app.js"
+    "start": "nodemon app.js"
   },
-  "author": "Edgardo Molina",
+  "author": "Mohammed Chowdhurys",
   "license": "ISC",
   "dependencies": {
     "csv-parse": "^4.12.0",