diff --git a/assignments/hackyourtemperature/__tests__/app.test.js b/assignments/hackyourtemperature/__tests__/app.test.js
new file mode 100644
index 000000000..cb858dca2
--- /dev/null
+++ b/assignments/hackyourtemperature/__tests__/app.test.js
@@ -0,0 +1,30 @@
+import app from "../app.js";
+import supertest from "supertest";
+
+jest.setTimeout(20000);
+const request = supertest(app);
+
+describe("POST /weather", () => {
+    it("Quick test", () => expect(1).toBe(1));
+
+    it("400 no cityName", async () => {
+        const res = await request.post("/weather").send({});
+        expect(res.status).toBe(400);
+        expect(res.body.weatherText).toContain("Please provide a cityName");
+    });
+
+    it("404", async () => {
+        const res = await request
+            .post("/weather")
+            .send({ cityName: "asldkfjasldkfj" });
+        expect(res.status).toBe(404);
+        expect(res.body.weatherText).toBe("City is not found!");
+    });
+
+    it("200 °C", async () => {
+        const res = await request.post("/weather").send({ cityName: "Amsterdam" });
+        expect(res.status).toBe(200);
+        expect(res.body.weatherText).toEqual(expect.stringContaining("Amsterdam"));
+        expect(res.body.weatherText).toEqual(expect.stringContaining("°C"));
+    });
+});
\ No newline at end of file
diff --git a/assignments/hackyourtemperature/app.js b/assignments/hackyourtemperature/app.js
new file mode 100644
index 000000000..440a88791
--- /dev/null
+++ b/assignments/hackyourtemperature/app.js
@@ -0,0 +1,45 @@
+import express from "express";
+import keys from "./sources/keys.js";
+
+const app = express();
+app.use(express.json());
+
+app.get("/", (req, res) => {
+    res.type("text").send("hello from backend to frontend!");
+});
+
+app.post("/weather", async (req, res) => {
+    const { cityName } = req.body ?? {};
+    if (!cityName || typeof cityName !== "string" || !cityName.trim()) {
+        return res.status(400).json({ weatherText: "Please provide a cityName." });
+    }
+
+    const url = `https://api.openweathermap.org/data/2.5/weather?q=${encodeURIComponent(
+        cityName
+    )}&units=metric&appid=${keys.API_KEY}`;
+
+    try {
+        const r = await fetch(url);
+        const data = await r.json();
+
+        if (!r.ok || String(data.cod) !== "200") {
+            return res.status(404).json({ weatherText: "City is not found!" });
+        }
+
+        const name = data?.name ?? cityName;
+        const temp = data?.main?.temp;
+
+        return res
+            .status(200)
+            .json({
+                weatherText: `The current temperature in ${name} is ${Math.round(
+                    temp
+                )}°C.`,
+            });
+    } catch (e) {
+        console.error(e);
+        return res.status(500).json({ weatherText: "Server error." });
+    }
+});
+
+export default app;
\ No newline at end of file
diff --git a/assignments/config-files/babel.config.cjs b/assignments/hackyourtemperature/babel.config.cjs
similarity index 100%
rename from assignments/config-files/babel.config.cjs
rename to assignments/hackyourtemperature/babel.config.cjs
diff --git a/assignments/config-files/jest.config.js b/assignments/hackyourtemperature/jest.config.js
similarity index 100%
rename from assignments/config-files/jest.config.js
rename to assignments/hackyourtemperature/jest.config.js
diff --git a/assignments/hackyourtemperature/package.json b/assignments/hackyourtemperature/package.json
new file mode 100644
index 000000000..0d7b77f70
--- /dev/null
+++ b/assignments/hackyourtemperature/package.json
@@ -0,0 +1,19 @@
+{
+  "name": "hackyourtemperature",
+  "version": "1.0.0",
+  "type": "module",
+  "scripts": {
+    "start": "node server.js",
+    "test": "jest"
+  },
+  "dependencies": {
+    "express": "^5.1.0",
+    "node-fetch": "^3.3.2"
+  },
+  "devDependencies": {
+    "@babel/preset-env": "^7.28.5",
+    "babel-jest": "^29.7.0",
+    "jest": "^29.7.0",
+    "supertest": "^6.3.4"
+  }
+}
diff --git a/assignments/hackyourtemperature/server.js b/assignments/hackyourtemperature/server.js
new file mode 100644
index 000000000..1ab4fab7f
--- /dev/null
+++ b/assignments/hackyourtemperature/server.js
@@ -0,0 +1,6 @@
+import app from "./app.js";
+
+const PORT = process.env.PORT || 3009;
+app.listen(PORT, () => {
+    console.log(`Server listening on http://localhost:${PORT}`);
+});
\ No newline at end of file
diff --git a/assignments/hackyourtemperature/sources/keys.js b/assignments/hackyourtemperature/sources/keys.js
new file mode 100644
index 000000000..bc3b84273
--- /dev/null
+++ b/assignments/hackyourtemperature/sources/keys.js
@@ -0,0 +1,5 @@
+const keys = {
+    API_KEY: "60238be831d8710a4f2928681949b036"
+};
+
+export default keys;
\ No newline at end of file
diff --git a/week2/prep-exercises/1-blog-API/My first blog.txt b/week2/prep-exercises/1-blog-API/My first blog.txt
new file mode 100644
index 000000000..6769dd60b
--- /dev/null
+++ b/week2/prep-exercises/1-blog-API/My first blog.txt	
@@ -0,0 +1 @@
+Hello world!
\ No newline at end of file
diff --git a/week2/prep-exercises/1-blog-API/package.json b/week2/prep-exercises/1-blog-API/package.json
index d89c4bd76..10032569f 100644
--- a/week2/prep-exercises/1-blog-API/package.json
+++ b/week2/prep-exercises/1-blog-API/package.json
@@ -1,7 +1,7 @@
 {
   "name": "1-blog-api",
   "version": "1.0.0",
-  "description": "",
+  "description": "Anyone here still remember blogs!? They were all the rage around 10 years ago. We are a bit late to the party, but I think we can still make some money with a blog application.",
   "main": "server.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
@@ -10,6 +10,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "express": "^4.17.1"
-  }
+    "express": "^4.21.2"
+  },
+  "keywords": []
 }
diff --git a/week2/prep-exercises/1-blog-API/server.js b/week2/prep-exercises/1-blog-API/server.js
index 3f615e8f5..d725baf48 100644
--- a/week2/prep-exercises/1-blog-API/server.js
+++ b/week2/prep-exercises/1-blog-API/server.js
@@ -1,10 +1,69 @@
-const express = require('express')
+const express = require('express');
+const fs = require('fs');
 const app = express();
- 
 
-// YOUR CODE GOES IN HERE
+app.use(express.json());
+
+app.delete('/blogs/:title', (req, res) => {
+  const title = req.params.title;
+  const filePath = `${title}.txt`;
+
+  if (fs.existsSync(filePath)) {
+    fs.unlinkSync(filePath);
+    res.send('ok');
+  } else {
+    res.status(404).send('This post does not exist!');
+  }
+});
+
+app.put('/blogs/:title', (req, res) => {
+  const title = req.params.title;
+  const { content } = req.body;
+
+  if (!content) {
+    return res.status(400).send('Missing content');
+  }
+
+  const filePath = `${title}.txt`;
+
+  if (fs.existsSync(filePath)) {
+    fs.writeFileSync(filePath, content);
+    res.send('ok');
+  } else {
+    res.status(404).send('This post does not exist!');
+  }
+});
+
+
+app.post('/blogs', (req, res) => {
+  const { title, content } = req.body;
+
+  if (!title || !content) {
+    return res.status(400).send('Missing title or content');
+  }
+
+  fs.writeFileSync(`${title}.txt`, content);
+
+  res.end('ok');
+});
+
+
+
+app.get('/blogs/:title', (req, res) => {
+  const title = req.params.title;
+  const filePath = `${title}.txt`;
+
+  if (fs.existsSync(filePath)) {
+    const post = fs.readFileSync(filePath, 'utf-8');
+    res.send(post);
+  } else {
+    res.status(404).send('This post does not exist!');
+  }
+});
+
 app.get('/', function (req, res) {
   res.send('Hello World')
 })
- 
-app.listen(3000)
\ No newline at end of file
+
+
+app.listen(3000, () => console.log('Server running on http://localhost:3000'));
\ No newline at end of file