LegalGuard

Protect your legal rights — never let hidden clauses take them away without you knowing.

🧭 About the Project — LegalGuard: AI that Simplifies the Fine Print

💡 Inspiration

Every day, millions of users click “Agree” without reading the fine print.
According to Deloitte, 91% of consumers consent to Terms of Service without reviewing them — leading to privacy loss, unexpected charges, and hidden liabilities.

We wanted to change that.
LegalGuard was born from a simple question:

“What if your browser could understand legal language for you?”

🧱 How We Built It

LegalGuard is a Chrome extension powered entirely by Chrome’s built-in AI APIs:

🧠 Prompt API — powers interactive Q&A, enabling users to ask questions about detected clauses and receive AI-generated explanations.
📘 Summarizer API — condenses complex legal documents into short, structured insights.
🌐 Translator API — renders summaries and answers in multiple languages for global accessibility.

We built three main modules:

Clause Detection Engine — scans webpages using a curated legal glossary and regex patterns to detect keywords.
Contextual Toast System — instantly surfaces brief legal alerts in-page (e.g., Privacy, Liability, IP Rights).
Side Panel Dashboard — displays a full summary, risk categories, and the interactive AI chat interface.

All front-end logic is implemented in JavaScript, with Manifest V3, modular content scripts, and Chrome Side Panel APIs.

🧩 Challenges

Managing token limits and latency between multiple Chrome AI APIs.
Designing stable injection logic for real-time clause detection without breaking page rendering.
Building a consistent UI/UX between toasts, highlights, and the side panel.
Balancing accuracy vs. noise in legal keyword detection to reduce false positives.

📚 What We Learned

How to integrate and orchestrate multiple Chrome built-in AI APIs in one workflow.
The importance of UX clarity when explaining complex legal terms — users need trust and simplicity.
How small contextual micro-interactions (like toasts) can dramatically improve user awareness.
The value of cross-disciplinary collaboration between designers, engineers, and product thinkers.

🚀 Next Steps

Expand glossary coverage to more jurisdictions.
Add fine-tuned risk scoring using feedback loops and continuous learning.
Explore multi-modal explanation — visual + textual breakdowns for each clause.