diff --git a/package-lock.json b/package-lock.json
index 3fb12fd..edfab90 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,6 +12,7 @@
         "cors": "^2.8.5",
         "express": "^4.18.2",
         "morgan": "^1.10.0",
+        "node": "^20.15.0",
         "nodemon": "^3.0.1"
       },
       "devDependencies": {
@@ -3563,6 +3564,26 @@
         "node": ">= 0.6"
       }
     },
+    "node_modules/node": {
+      "version": "20.15.0",
+      "resolved": "https://registry.npmjs.org/node/-/node-20.15.0.tgz",
+      "integrity": "sha512-zsJ9aOJAKhnR9rJ4BBfGmgiBmG3ZlLXLZ4jBjshPib+S8qKSY+ggBvphceT5gHF1X7KB4UP1ImU/A4EYr31Y2g==",
+      "hasInstallScript": true,
+      "dependencies": {
+        "node-bin-setup": "^1.0.0"
+      },
+      "bin": {
+        "node": "bin/node"
+      },
+      "engines": {
+        "npm": ">=5.0.0"
+      }
+    },
+    "node_modules/node-bin-setup": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/node-bin-setup/-/node-bin-setup-1.1.3.tgz",
+      "integrity": "sha512-opgw9iSCAzT2+6wJOETCpeRYAQxSopqQ2z+N6BXwIMsQQ7Zj5M8MaafQY8JMlolRR6R1UXg2WmhKp0p9lSOivg=="
+    },
     "node_modules/node-int64": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/node-int64/-/node-int64-0.4.0.tgz",
diff --git a/package.json b/package.json
index ec6510a..2d49cf5 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
     "cors": "^2.8.5",
     "express": "^4.18.2",
     "morgan": "^1.10.0",
+    "node": "^20.15.0",
     "nodemon": "^3.0.1"
   },
   "devDependencies": {
diff --git a/src/server.js b/src/server.js
index 30f0ce3..2ef45a7 100644
--- a/src/server.js
+++ b/src/server.js
@@ -9,5 +9,65 @@ app.use(express.json())
 
 // write your app code here
 
+let contacts = [
+    {id: 1, firstName: 'John', lastName: 'Carmack'}, 
+    {id: 2, firstName: 'Grace', lastName: 'Hopper'},
+   
+]
+let nextId = 3
+
+//gets all contacts
+app.get('/contacts', (request, respond) => {
+    respond.status(200).json({ contacts })
+})
+
+// gets a contact by Id
+app.get('/contacts/:id', (request, respond) => {
+    const id = parseInt(request.params.id)
+    const contact = contacts.find(c => c.id === id)
+    if (contact) {
+        respond.status(200).json({ contact })
+    } else {
+        //respond.status(404).send('Contact not found')
+       respond.status(404).json({ message: 'contact not found' })
+    }
+}) 
+
+//create a new contact
+app.post('/contacts', (request, respond) => {
+   const newContact = request.body
+   newContact.id = nextId++
+   contacts.push(newContact)
+   respond.status(201).json({ contact: newContact })
+
+})
+
+// edit and update a contact
+app.put('/contacts/:id', (request, respond) => {
+    const id = parseInt(request.params.id)
+    const index = contacts.findIndex (c => c.id === id)
+    if (index !== -1) {
+        contacts[index] = {...contacts[index], ...request.body}
+        const updatedContact = contacts[index]
+        respond.status(200).json({contact: updatedContact})
+    } else {
+        respond.status(404).json('Message: Contacts not found')
+    }
+   
+})
+
+
+//then delete a contact
+app.delete('/contacts/:id', (request, respond) => {
+    const id = parseInt(request.params.id)
+    const index = contacts.findIndex(c => c.id === id)
+    if (index !== -1) {
+        const deletedContact = contacts.splice(index, 1)
+        respond.status(200).json ({ contact: deletedContact[0] })
+    } else {
+        respond.status(404).json('Message: contacts not found')
+    }
+})
+
 
 module.exports = app