LeetHelp
Solve LeetCode problems directly in VS Code. Browse, test, and submit — all without leaving your editor.
✨ Features
| Feature |
Description |
| 📂 Problem Browser |
Browse and search all LeetCode problems from the sidebar |
| ▶️ Run & Submit |
One-click buttons right above your code |
| 🌐 18 Languages |
Python, Java, C++, JavaScript, Go, Rust, and more |
| 🧪 Smart Test Cases |
Save failing tests — they auto-run with future tests |
| 📝 Git Auto-Commit |
Accepted solutions are committed automatically |
| 🔒 Secure Auth |
Cookie stored in your OS keychain, never in plain text |
📸 Interface Guide
Access LeetCode problems from the Activity Bar.
| Button |
Action |
| 📅 |
Open today's Daily Question |
| 🔍 |
Search for any problem |
| 🔄 |
Refresh problem list |
Buttons appear directly above your solution code.
| Button |
Action |
| Run Test |
Run example tests + your saved custom tests |
| Custom Test |
Run with your own input |
| Format |
Format code (LeetCode style) |
| Submit |
Submit solution to LeetCode |
Problem View
View problem description, examples, and constraints. Click Start Coding to select your language.
Test Results
See detailed test results with input/output comparison.
🚀 Quick Start
1. Sign In
- Go to leetcode.com and log in
- Open DevTools (
F12) → Network tab
- Click any request → Copy the full Cookie header value
- In VS Code:
Ctrl+Shift+P / Cmd+Shift+P → LeetHelp: Sign In → Paste
⚠️ Your cookie must contain these 3 values:
LEETCODE_SESSION — your login sessioncsrftoken — for API requestscf_clearance — Cloudflare token (expires often, re-copy if you get 403 errors)
2. Solve Problems
- Open the LeetCode sidebar
- Click a problem or use 🔍 to search
- Click Start Coding and select your language
- Write your solution
- Click Run Test to test, then Submit
⌨️ Keyboard Shortcuts
| Shortcut (Win/Linux) |
Shortcut (Mac) |
Action |
Ctrl+Alt+R |
Cmd+Alt+R |
Run Test |
Ctrl+Alt+C |
Cmd+Alt+C |
Run Custom Test |
Ctrl+Alt+S |
Cmd+Alt+S |
Submit |
📋 All Commands
Open Command Palette (Ctrl+Shift+P / Cmd+Shift+P) and type LeetHelp:
| Command |
Description |
LeetHelp: Sign In |
Authenticate with cookie |
LeetHelp: Sign Out |
Clear session |
LeetHelp: Auth Status |
Check login status |
LeetHelp: Verify Cookie |
Check if cookie is valid |
LeetHelp: Open Daily Question |
Open today's problem |
LeetHelp: Search Problem |
Find any problem |
LeetHelp: Run Test |
Run example + saved tests |
LeetHelp: Run Custom Test |
Run with custom input |
LeetHelp: Manage Saved Tests |
View/clear saved tests |
LeetHelp: Submit |
Submit solution |
LeetHelp: Format Code |
Format code (LeetCode style) |
🧪 Smart Test Cases
Failed a hidden test case? Save it and LeetHelp will automatically include it in future runs.
- Test fails → Click Save Test Case in the notification
- Run again → Saved tests run automatically with example tests
- All pass → Prompted to clear saved tests
🛠️ Build from Source
git clone https://github.com/sidkm18/LeetHelper.git
cd LeetHelper
npm install
npm run compile
Press F5 in VS Code to launch the Extension Development Host.
🐛 Troubleshooting
| Problem |
Solution |
| 403 Forbidden |
Re-copy your cookie — cf_clearance expired |
| Can't sign in |
Make sure you copied the full Cookie header |
| Extension not loading |
Reload VS Code window |
Report Issues · GitHub
Made with ❤️ by Sidharth
