diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..48e341a
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,3 @@
+{
+  "lockfileVersion": 1
+}
diff --git a/zip-api/app.js b/zip-api/app.js
index df1f97b..fc596a3 100644
--- a/zip-api/app.js
+++ b/zip-api/app.js
@@ -1,29 +1,25 @@
-const express = require('express');
+const express = require("express");
 const app = express();
-
-const zipdb = require('./zipData');
+// imports csv in the data folder
+const zipdb = require("./zipData");
 
 const PORT = process.env.PORT || 8000;
 
-
 // console.log(zipdb.byCity);
 
-
-app.get('/', (req, res) => {
-  res.json({test: 'Yay'});
+app.get("/", (req, res) => {
+	res.json({ test: "Yay" });
 });
 
-
-app.get('/zip/:zipcode', (req, res) => {
-  // fill in...
+app.get("/zip/:zipcode", (req, res) => {
+	res.send(zipdb.byZip[req.params.zipcode]);
 });
 
-
-app.get('/city/:cityname', (req, res) => {
-  // fill in...
+app.get("/city/:cityname", (req, res) => {
+	res.send(zipdb.byCity[req.params.cityname]);
 });
-
+// the keys are upper case like BROOKLYN
 
 app.listen(PORT, () => {
-  console.log(`zip-api is up and running on ${PORT}`);
+	console.log(`zip-api is up and running on ${PORT}`);
 });
diff --git a/zip-api/package.json b/zip-api/package.json
index 631bb53..8cecf59 100644
--- a/zip-api/package.json
+++ b/zip-api/package.json
@@ -1,19 +1,19 @@
 {
-  "name": "zip-api",
-  "version": "1.0.0",
-  "description": "Simple API backend for CTP lecture.",
-  "main": "app.js",
-  "scripts": {
-    "start": "node app.js"
-  },
-  "author": "Edgardo Molina",
-  "license": "ISC",
-  "dependencies": {
-    "csv-parse": "^4.12.0",
-    "express": "^4.17.1",
-    "morgan": "^1.10.0"
-  },
-  "devDependencies": {
-    "nodemon": "^1.19.4"
-  }
+	"name": "zip-api",
+	"version": "1.0.0",
+	"description": "Simple API backend for CTP lecture.",
+	"main": "app.js",
+	"scripts": {
+		"start": "node app.js"
+	},
+	"author": "Edgardo Molina",
+	"license": "ISC",
+	"dependencies": {
+		"csv-parse": "^4.12.0",
+		"express": "^4.17.1",
+		"morgan": "^1.10.0"
+	},
+	"devDependencies": {
+		"nodemon": "^1.19.4"
+	}
 }