diff --git a/public/src/code-execution.js b/public/src/code-execution.js
index 013e18c..dea2e9e 100644
--- a/public/src/code-execution.js
+++ b/public/src/code-execution.js
@@ -1,6 +1,6 @@
 // Code execution sandbox functionality
 import { CODE_EXEC_URL } from "./config.js";
-import * as unsandbox from "./unsandbox.js";
+import * as un from "./un.js";
 
 // Helper function to sleep/wait
 function sleep(ms) {
@@ -29,8 +29,8 @@ export async function executeCode(code, language, resultsContainer, playButton)
 			language = 'python';
 		}
 
-		// Check if unsandbox.com API is configured
-		if (unsandbox.isConfigured()) {
+		// Check if un.com API is configured
+		if (un.isConfigured()) {
 			await executeWithUnsandbox(code, language, resultsContainer);
 		} else {
 			await executeWithFallback(code, language, resultsContainer);
@@ -46,7 +46,7 @@ export async function executeCode(code, language, resultsContainer, playButton)
 	}
 }
 
-// Execute using unsandbox.com SDK (authenticated)
+// Execute using un.com SDK (authenticated)
 async function executeWithUnsandbox(code, language, resultsContainer) {
 	let pollCount = 0;
 	let cancelButton = null;
@@ -54,13 +54,13 @@ async function executeWithUnsandbox(code, language, resultsContainer) {
 
 	try {
 		// Start async execution to get job_id for cancel button
-		currentJobId = await unsandbox.executeAsync(language, code);
+		currentJobId = await un.executeAsync(language, code);
 
 		// Create cancel button (shown after 3 seconds)
 		cancelButton = createCancelButton(resultsContainer, async () => {
 			if (currentJobId) {
 				try {
-					await unsandbox.cancelJob(currentJobId);
+					await un.cancelJob(currentJobId);
 					cancelButton.disabled = true;
 					cancelButton.textContent = 'Cancelling...';
 				} catch (error) {
@@ -70,7 +70,7 @@ async function executeWithUnsandbox(code, language, resultsContainer) {
 		});
 
 		// Wait for job with progress callback
-		const result = await unsandbox.waitForJob(currentJobId, null, null, (count) => {
+		const result = await un.waitForJob(currentJobId, null, null, (count) => {
 			pollCount = count;
 			// Show cancel button after poll #5 (around 3 seconds)
 			if (count >= 5 && cancelButton) {
diff --git a/public/src/unsandbox.js b/public/src/un.js
similarity index 96%
rename from public/src/unsandbox.js
rename to public/src/un.js
index 76fd7c5..b891f1b 100644
--- a/public/src/unsandbox.js
+++ b/public/src/un.js
@@ -1,7 +1,9 @@
 /**
- * Unsandbox.com Browser SDK
- * Browser-compatible wrapper for unsandbox.com API
- * Based on official SDK patterns from lib/un.js
+ * un.js - Unsandbox.com Browser SDK
+ * Browser-compatible version of the official SDK (lib/un.js)
+ * Uses Web Crypto API for HMAC-SHA256 signing
+ *
+ * Update Node.js SDK: make update-unsandbox-sdk
  */
 
 const API_BASE = "https://api.unsandbox.com";