Live review

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  Live reviewing while coding

Inspiration

We wanted a way to get meaningful code reviews while writing code, not just after opening a pull request. Existing tools review diffs asynchronously, which is often too late. We imagined an AI that lives in your VSCode extension and gives insight about your code the same way a Senior Software engineer would.

What it does

LiveReview is a VS Code extension that performs live, in-editor code reviews. As you open the file and start updating the code:

• Highlights architectural, performance, correctness issues.
• Suggests best practices and modern language techniques
• Points out non obvious problems developers tend to miss.
• Provides improvement suggestions

How we built it

• VSCode extension api
• OpenRouter API
• GPT-5-Codex (code reasoning & review)
• Token-aware prompt design To help keep track of spending

Challenges we ran into

• Designing reviews that are helpful without being noisy or intrusive
• Avoiding generic or superficial AI feedback
• Structuring prompts to focus on architecture and reasoning

Accomplishments that we're proud of

• Created meaningful, senior-level feedback instead of surface-level suggestions
• Integrated AI in a way that feels like a mentor
• Delivered a polished, demo-ready developer experience in a hackathon timeframe

What we learned

• How to make a vscode extension
• Trade-offs between speed, depth, and accuracy in live AI systems

What's next for Live review

• Smarter detection of performance and concurrency issues
• Per function review
• Apply suggestion to automatically update code
• Add entire workspace as context
• Compare diffs later for more efficient AI requests

Built With

• css
• gemini
• gpt5-codex
• html
• node.js
• openrouter
• typescript
• vscode