LCPath: Your AI-Powered LeetCode Study Coach

Research context and background

LCPath is a free Chrome extension built to help people prepare for coding interviews on the LeetCode website. It acts like a personal study coach by looking at your past work and using artificial intelligence to suggest the best next problems to solve. The tool runs directly in your browser and uses the DeepSeek API to provide smart recommendations without needing to pay for extra services.

Benefits

LCPath offers several key advantages for anyone practicing coding problems. First, it provides smart recommendations for exactly 20 tailored problems. These suggestions are designed to fill gaps in your weakest topics while building on concepts you have already mastered. This creates a clear path forward instead of leaving you to pick random problems. Second, the tool tracks your progress automatically. It changes your recommended study topics every five solved problems so your plan evolves as you get better. Third, it includes an AI chat assistant that works like a Socratic coach. This means the AI reads your live code and offers subtle hints to guide you without giving away the answer. Finally, the extension prioritizes your privacy. It stores your solved problem list locally on your device and keeps your API keys secure on your computer rather than sending them to external servers.

Use Cases

LCPath is ideal for software engineers and students preparing for technical job interviews. It is most useful when you are stuck on a problem and need a hint or when you are unsure which topic to study next. For example, if you have solved many array problems but few graph problems, LCPath will notice this gap and suggest graph problems to help you balance your skills. The tool works on any LeetCode problem page. You simply open a problem, click the LCPath icon in your browser toolbar, and the side panel will appear with your personalized plan and chat window. It is also helpful for tracking your long-term progress because it rotates your study topics to ensure you keep learning new things.

Pricing

LCPath is currently free to use. The extension itself has no cost, and it relies on the DeepSeek API for its AI features. Since the DeepSeek model is chosen for its affordability, users can access powerful AI coaching without paying a subscription fee.

Vibes

While there are no formal public reviews or testimonials available in the provided information, the project description suggests a positive reception from the developer community. The tool is described as an innovative solution that transforms a solitary grind into a guided learning journey. The emphasis on privacy and the use of open-source architecture indicate that it is well-received by users who value transparency and data security.

Additional Information

LCPath was developed as an open-source project. Users can clone the repository from its source to set it up locally. The architecture is modular and consists of a content script that runs on LeetCode pages, a side panel user interface, and a backend proxy that connects to the DeepSeek API. To use the tool, users must install the extension in their Chromium-based browser like Chrome, Brave, or Edge. They also need to create a local environment file to store their own DeepSeek API key, which they can obtain from the DeepSeek service.