# LeetCode VS Code Auth Sync

> Syncs your signed-in leetcode.com browser session to the LeetCode with Auth Sync VS Code extension on localhost.

Canonical page: [https://chrome-stats.com/d/leetcode-vs-code-auth-sync](https://chrome-stats.com/d/leetcode-vs-code-auth-sync)

## Overview

- **ID:** `leetcode-vs-code-auth-sync`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** wilmtang
- **Category:** other
- **Daily users:** 6
- **Weekly downloads:** 1
- **Version:** 0.1.6
- **Last updated:** 2026-07-09
- **First published:** 2026-05-30
- **Size:** 29 KB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/leetcode-vs-code-auth-sync/)
- **Website:** [https://github.com/wilmtang/vscode-leetcode/issues](https://github.com/wilmtang/vscode-leetcode/issues)

## Description

Unofficial companion browser extension for LeetCode with Auth Sync. It is not affiliated with, endorsed by, sponsored by, or published by LeetCode.

How to use it:
1. Install the VS Code extension from <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/31ec2ce934287bcf5f5d14e0eac45f1989269bf8dce99c3a9ecbab3209dca845/https%3A//marketplace.visualstudio.com/items%3FitemName=wilmtang.vscode-leetcode-auth-sync" rel="nofollow">https://marketplace.visualstudio.com/items?itemName=wilmtang.vscode-leetcode-auth-sync</a>
2. Install this Firefox add-on on the same machine.
3. Sign in to <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/46789bf1eadef441e1a138c754d9d5ca7dc7ed71c3af2455dc252ea39e1124d4/https%3A//leetcode.com/" rel="nofollow">https://leetcode.com/</a> in Firefox.
4. In VS Code, click LeetCode: Sign In and choose Auto Cookie Sync.
5. In this add-on popup, click Expire now, then open or refresh any <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/38bfcd362f1787de4f850620bfd49db1b26c8fb561bd46a4f5572949df99d104/http%3A//leetcode.com" rel="nofollow">leetcode.com</a> page so the next real LeetCode request syncs cookies and browser request headers to VS Code.

How it works: the VS Code extension starts a local listener on 127.0.0.1:17899. This add-on reads your <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/38bfcd362f1787de4f850620bfd49db1b26c8fb561bd46a4f5572949df99d104/http%3A//leetcode.com" rel="nofollow">leetcode.com</a> cookies and sends the LeetCode Cookie header to that local listener, where VS Code reuses the existing cookie login flow. Cookie values are sent only to the local VS Code listener and are not intentionally logged.

## Rankings

- #41,695 — Overall
- #20 — leetcode
- #82 — sync
- #182 — code
- #193 — codes

## Permissions and access

### Permissions

- `cookies`
- `storage`
- `webRequest`

### Host permissions

- `https://leetcode.com/*`
- `http://127.0.0.1/*`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Allows the extension to observe and analyze traffic in flight for the selected hosts.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/leetcode-vs-code-auth-sync)