diff --git a/.gitignore b/.gitignore
index ef229ed..aace4f7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
 coverage/
 dist/
 node_modules/
+test-results/
+test-results.json
diff --git a/bun.lockb b/bun.lockb
index 72143bc..70f493a 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/e2e/auctions.test.ts b/e2e/auctions.test.ts
new file mode 100644
index 0000000..aba3152
--- /dev/null
+++ b/e2e/auctions.test.ts
@@ -0,0 +1,54 @@
+import { apis, baseURL } from '../src/constants/apis.constant';
+import { test, expect } from '@playwright/test'
+
+test.describe('Create Auction via Topsort.js', () => {
+  test('should create auction successfully', async ({ page }) => {
+    const mockAPIResponse = {
+      results: [
+        {
+          resultType: "listings",
+          winners: [],
+          error: false,
+        },
+        {
+          resultType: "banners",
+          winners: [],
+          error: false,
+        },
+      ],
+    }
+
+    await page.route(`${baseURL}/${apis.auctions}`, async route => {
+      await route.fulfill({ json: mockAPIResponse });
+    });
+
+    await page.goto('http://localhost:8080/e2e/index.html');
+
+    await page.fill('input[name="apiKey"]', 'your-api-key');
+    await page.fill('input[name="auctionDetails"]', JSON.stringify({
+      auctions: [
+        {
+          type: "listings",
+          slots: 3,
+          category: { id: "cat123" },
+          geoTargeting: { location: "US" },
+        },
+        {
+          type: "banners",
+          slots: 1,
+          device: "desktop",
+          slotId: "slot123",
+          category: { ids: ["cat1", "cat2"] },
+          geoTargeting: { location: "UK" },
+        },
+      ],
+    }));
+
+    await page.click('button[type="submit"]');
+
+    const response = await page.locator('#response').textContent();
+    const jsonResponse = JSON.parse(response || '{}');
+    expect(jsonResponse).toEqual(mockAPIResponse)
+    expect(jsonResponse).toEqual(mockAPIResponse);
+  });
+});
\ No newline at end of file
diff --git a/e2e/index.html b/e2e/index.html
new file mode 100644
index 0000000..55a09d8
--- /dev/null
+++ b/e2e/index.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Topsort SDK Test Application</title>
+    <script src="../dist/index.global.js"></script>
+  </head>
+  <body>
+    <h1>Test Topsort.js Integration</h1>
+    <form id="auction-form">
+      <input type="text" name="apiKey" placeholder="API Key" required />
+      <input
+        type="text"
+        name="auctionDetails"
+        placeholder="Auction Details"
+        required
+      />
+      <button type="submit">Create Auction</button>
+    </form>
+    <pre id="response"></pre>
+    <script>
+      document
+        .getElementById("auction-form")
+        .addEventListener("submit", async (event) => {
+          event.preventDefault();
+          const apiKey = event.target.apiKey.value;
+          const auctionDetails = JSON.parse(event.target.auctionDetails.value);
+          const config = { apiKey };
+          try {
+            const result = await Topsort.createAuction(
+              config,
+              auctionDetails
+            );
+            document.getElementById("response").textContent = JSON.stringify(
+              result,
+              null,
+              2
+            );
+          } catch (error) {
+            document.getElementById("response").textContent = error.toString();
+          }
+        });
+    </script>
+  </body>
+</html>
diff --git a/package.json b/package.json
index 5ce694e..6ab1394 100644
--- a/package.json
+++ b/package.json
@@ -32,13 +32,16 @@
   ],
   "scripts": {
     "build": "tsup",
+    "test:e2e": "playwright test",
     "format": "biome check",
     "format:fix": "biome check --write",
     "prepare": "lefthook install"
   },
   "devDependencies": {
     "@biomejs/biome": "1.8.3",
+    "@playwright/test": "^1.45.2",
     "@types/bun": "1.1.6",
+    "http-server": "^14.1.1",
     "lefthook": "1.7.2",
     "msw": "2.3.1",
     "tsup": "8.1.0",
diff --git a/playwright.config.ts b/playwright.config.ts
new file mode 100644
index 0000000..0ed5b16
--- /dev/null
+++ b/playwright.config.ts
@@ -0,0 +1,31 @@
+import { defineConfig, devices } from '@playwright/test';
+
+export default defineConfig({
+    testDir: './e2e',
+    timeout: 30000,
+    retries: 1,
+    reporter: [['list'], ['json', { outputFile: 'test-results.json' }]],
+    use: {
+        trace: 'on-first-retry',
+    },
+    projects: [
+        {
+            name: 'chromium',
+            use: { ...devices['Desktop Chrome'] },
+        },
+        {
+            name: 'firefox',
+            use: { ...devices['Desktop Firefox'] },
+        },
+        {
+            name: 'webkit',
+            use: { ...devices['Desktop Safari'] },
+        },
+    ],
+    webServer: {
+        command: 'http-server ./ -p 8080',
+        reuseExistingServer: !process.env.CI,
+        stdout: 'ignore',
+        stderr: 'pipe',
+    }
+})
\ No newline at end of file
diff --git a/tsup.config.ts b/tsup.config.ts
index 0e3f406..d8f1bb2 100644
--- a/tsup.config.ts
+++ b/tsup.config.ts
@@ -2,11 +2,12 @@ import { defineConfig } from "tsup";
 
 export default defineConfig({
   entry: ["src/index.ts"],
-  format: ["cjs", "esm"],
+  format: ["cjs", "esm", "iife"],
   dts: true,
   clean: true,
   minify: true,
   esbuildOptions(options) {
     options.keepNames = true;
+    options.globalName = "Topsort"
   },
 });
