Clarity
Upload two versions of a rental agreement and see exactly what changed, side by side. AI explains the risks in plain language, for either the tenant or the landlord. No login is needed and nothing is saved.
No login required
This prototype demonstration is running on our lower environments, so you may experience slowness or unexpected behavior due to their configuration at times.
Landing: see exactly what changed between contract versions
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The Problem
The business problem it solves
When a landlord sends an updated tenancy agreement, tenants (and landlords reviewing a counter-draft) have to compare two long legal documents line by line to find what moved, and then work out whether each change helps or hurts them. Clarity automates that: it aligns both versions clause by clause, highlights every addition, removal, and modification, and explains the risk, who each change favors, and what to do about it in plain English, without requiring an account or storing the documents.
Features & Functionality
What it does
Pick Your Role
Choose tenant or landlord before uploading
Role shapes how risk and recommendations are framed for every change
No login or account required
Upload & Extraction
Upload the original and updated contract as text-based PDF or DOCX
Column-, table-, and numbering-aware text extraction
Scanned or image-only PDFs are rejected (OCR is out of scope)
Files processed in memory within a single request, nothing written to disk
Clause-Level Diff
Both documents are clause-aligned before diffing
Split-pane document view with every change highlighted
Sidebar of change cards: added, removed, and modified clauses
Click a card to jump to the change in both documents
AI Risk Insights
Summary, risk level, and "who it favors" for every changed clause
A recommendation per change, framed for the chosen role
Works without an API key, diffs still shown, insights marked unavailable
Technology Stack
Frameworks & infrastructure
Frontend
Next.js (App Router)TurbopackTypeScriptTailwind CSSFramer MotionZustand (in-memory state)
Parsing Service
Python FastAPI microservicePyMuPDF (PDF)python-docx (DOCX)Docker Composepytest